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penetration tester
BDO UK
BDO Digital Offensive Senior Security Analyst
BDO UK City, London
Ideas People Trust We're BDO. An accountancy and business advisory firm, providing the advice and solutions entrepreneurial organisations need to navigate today's changing world. We work with the companies that are Britain's economic engine - ambitious, entrepreneurially-spirited and high growth businesses that fuel the economy - and directly advise the owners and management teams that lead them. We'll broaden your horizons At our core, we believe that growth comes from exposure to diverse challenges. In this role, you'll have the opportunity to work across a wide range of engagements, thanks to the trust and scale of our clients. You will get hands-on experience with web application and API testing, Wireless assessments, Internal infrastructure tests, Mobile App security, Red and Purple team operations, Physical intrusion testing, hardware analysis, and more. No two projects are quite the same, and that's exactly how we like it. This variety allows our team to explore different domains, deepen existing strengths, and discover new areas of interest, all while solving real-world problems in live environments. Whether you're still shaping your focus or refining an existing specialty, you'll have space here to grow meaningfully. Manage risk for our clients to make them stronger for the future. Our Digital Services are designed to enable organisations to leverage our innovative methodologies, technology, and highly experienced professionals to manage their business risks most effectively. Working at BDO offers curious-minded people excellent exposure to all aspects of business strategy, operations and more. We're a dynamic team of internal auditors, accountants, technology, and business transformation experts with disciplines in finance, risk, projects and change, cyber and digital, amongst others. Our extensive network and depth of experience mean we work in a highly client-centric way, focused on providing a collaborative, tailor-made advisory service. Our team helps clients manage their business-critical threats, such as cyber events, and build resilient businesses capable of responding to internal and external events which may interrupt their operations. Being known for exceptional client service in our chosen markets, we put innovation and agility at the heart of everything we do. This is your chance to join a fast-paced, growing team and help shape the future of Digital at BDO. We'll help you succeed Leading organisations trust us because of the quality of our advice. That quality grows from a thorough understanding of their business, and that understanding comes from working closely with them and building long-lasting relationships. You'll be someone who is both comfortable working proactively and managing your own tasks, as well as confident collaborating with others and communicating regularly with senior managers, directors, and BDO's partners to help businesses effectively. You'll be encouraged to identify and draw attention to opportunities for enhancing our delivery and providing additional services to organisations we work with. We are seeking a highly skilled and experienced Senior Offensive Security penetration tester to join our dynamic team. This role involves conducting sophisticated penetration testing and red team engagements across various client systems and applications. The successful candidate will be instrumental in identifying vulnerabilities, enhancing client security postures, and leading initiatives to develop cutting-edge penetration testing methodologies and tools. Clients across industries and geographies, staying at the forefront of knowledge of the threat landscape, cyber defence best practices and regulatory expectations. Requirements: Strict Requirement: Strong certification in penetration testing such as OSCP (Offensive Security Certified Professional), CTM (Check Team Member), CRT (CREST Registered Tester) and OSWA (Offensive Security Web Attacks) or even better if you have Advanced certifications such as OSEP(OffSec Experience Penetration Tester), CCSAM (CREST Certified Simulated Attack Manager) and CTL (Check Team Leader). Solid experience in offensive security-whether through professional penetration testing, red teaming, bug bounty work, capture-the-flag competitions, or personal research projects. Proven ability to deliver impactful client engagements, demonstrating both technical depth and a practical understanding of risk. Deep knowledge of network protocols, different services, operating systems, different applications and how to break them. Proficiency in tools such as Metasploit, Burp Suite or other proxies such as Caido or Zap, Nessus, CobaltStrike or other C2 frameworks, etc. Bonus points for building your own tools, contributing to community projects, or chaining techniques creatively. Excellent problem-solving skills and a passion for ethical hacking that is persistent, curious, and know how to pivot when things do not go as planned. Experience coding and scripting custom tools in Python, Bash, PowerShell, or anything else that gets the job done. Ability to communicate technical findings clearly to both technical and non-technical stakeholders. An active interest in the evolving security landscape, continuously staying up to date with new techniques, vulnerabilities, and research as well as contributing knowledge back to the team Be yourself It's at the core of the company's and team's vision. You'll be able to truly be yourself; we'll recognise and value you for who you are and celebrate and reward your contributions to the business. We're committed to agile working, and we offer every colleague the opportunity to work in ways that suits them, their teams, and the tasks at hand. At BDO, we're committed to helping you achieve your personal and professional goals. We provide structured development frameworks, resources, and mentorship to support your growth-whether you're looking to deepen a specific skillset or broaden your expertise across domains. We'll align your client engagements with your learning objectives, giving you the chance to apply new skills, explore areas of interest, and gain practical experience. You won't be navigating this alone-our team culture emphasizes peer support, collaboration, and knowledge sharing on every project. We're in it together Mutual support and respect are one of BDO's core values and we're proud of our distinctive, people-centred culture. From informal success conversations to formal mentoring and coaching, we'll support you at every stage in your career, whatever your personal and professional needs. Our agile working framework helps us stay connected, bringing teams together where and when it counts so they can share ideas and help one another. At BDO, you'll always have access to the people and resources you need to do your best work. We know that collaboration is the key to creating value for the companies we work with and satisfying experiences for our colleagues, so we've invested in state-of-the-art collaboration spaces in our offices. BDO's people represent a wealth of knowledge and expertise, and we'll encourage you to build your network, work alongside others, and share your skills and experiences. With a range of multidisciplinary events and dedicated resources, you'll never stop learning at BDO. We're looking forward to the future At BDO, we help entrepreneurial businesses to succeed, fueling the UK economy. Our success is powered by our people, which is why we're always finding new ways to invest in you. Across the UK thousands of unique minds continue to come together to help companies we work with to achieve their ambitions. We've got a clear purpose, and we're confident in our future, because we're adapting and evolving to build on our strengths, ensuring we continue to find the right combination of global reach, integrity and expertise. We shape the future together with openness and clarity, because we believe in empowering people to think creatively about how we can do things better.
Jan 09, 2026
Full time
Ideas People Trust We're BDO. An accountancy and business advisory firm, providing the advice and solutions entrepreneurial organisations need to navigate today's changing world. We work with the companies that are Britain's economic engine - ambitious, entrepreneurially-spirited and high growth businesses that fuel the economy - and directly advise the owners and management teams that lead them. We'll broaden your horizons At our core, we believe that growth comes from exposure to diverse challenges. In this role, you'll have the opportunity to work across a wide range of engagements, thanks to the trust and scale of our clients. You will get hands-on experience with web application and API testing, Wireless assessments, Internal infrastructure tests, Mobile App security, Red and Purple team operations, Physical intrusion testing, hardware analysis, and more. No two projects are quite the same, and that's exactly how we like it. This variety allows our team to explore different domains, deepen existing strengths, and discover new areas of interest, all while solving real-world problems in live environments. Whether you're still shaping your focus or refining an existing specialty, you'll have space here to grow meaningfully. Manage risk for our clients to make them stronger for the future. Our Digital Services are designed to enable organisations to leverage our innovative methodologies, technology, and highly experienced professionals to manage their business risks most effectively. Working at BDO offers curious-minded people excellent exposure to all aspects of business strategy, operations and more. We're a dynamic team of internal auditors, accountants, technology, and business transformation experts with disciplines in finance, risk, projects and change, cyber and digital, amongst others. Our extensive network and depth of experience mean we work in a highly client-centric way, focused on providing a collaborative, tailor-made advisory service. Our team helps clients manage their business-critical threats, such as cyber events, and build resilient businesses capable of responding to internal and external events which may interrupt their operations. Being known for exceptional client service in our chosen markets, we put innovation and agility at the heart of everything we do. This is your chance to join a fast-paced, growing team and help shape the future of Digital at BDO. We'll help you succeed Leading organisations trust us because of the quality of our advice. That quality grows from a thorough understanding of their business, and that understanding comes from working closely with them and building long-lasting relationships. You'll be someone who is both comfortable working proactively and managing your own tasks, as well as confident collaborating with others and communicating regularly with senior managers, directors, and BDO's partners to help businesses effectively. You'll be encouraged to identify and draw attention to opportunities for enhancing our delivery and providing additional services to organisations we work with. We are seeking a highly skilled and experienced Senior Offensive Security penetration tester to join our dynamic team. This role involves conducting sophisticated penetration testing and red team engagements across various client systems and applications. The successful candidate will be instrumental in identifying vulnerabilities, enhancing client security postures, and leading initiatives to develop cutting-edge penetration testing methodologies and tools. Clients across industries and geographies, staying at the forefront of knowledge of the threat landscape, cyber defence best practices and regulatory expectations. Requirements: Strict Requirement: Strong certification in penetration testing such as OSCP (Offensive Security Certified Professional), CTM (Check Team Member), CRT (CREST Registered Tester) and OSWA (Offensive Security Web Attacks) or even better if you have Advanced certifications such as OSEP(OffSec Experience Penetration Tester), CCSAM (CREST Certified Simulated Attack Manager) and CTL (Check Team Leader). Solid experience in offensive security-whether through professional penetration testing, red teaming, bug bounty work, capture-the-flag competitions, or personal research projects. Proven ability to deliver impactful client engagements, demonstrating both technical depth and a practical understanding of risk. Deep knowledge of network protocols, different services, operating systems, different applications and how to break them. Proficiency in tools such as Metasploit, Burp Suite or other proxies such as Caido or Zap, Nessus, CobaltStrike or other C2 frameworks, etc. Bonus points for building your own tools, contributing to community projects, or chaining techniques creatively. Excellent problem-solving skills and a passion for ethical hacking that is persistent, curious, and know how to pivot when things do not go as planned. Experience coding and scripting custom tools in Python, Bash, PowerShell, or anything else that gets the job done. Ability to communicate technical findings clearly to both technical and non-technical stakeholders. An active interest in the evolving security landscape, continuously staying up to date with new techniques, vulnerabilities, and research as well as contributing knowledge back to the team Be yourself It's at the core of the company's and team's vision. You'll be able to truly be yourself; we'll recognise and value you for who you are and celebrate and reward your contributions to the business. We're committed to agile working, and we offer every colleague the opportunity to work in ways that suits them, their teams, and the tasks at hand. At BDO, we're committed to helping you achieve your personal and professional goals. We provide structured development frameworks, resources, and mentorship to support your growth-whether you're looking to deepen a specific skillset or broaden your expertise across domains. We'll align your client engagements with your learning objectives, giving you the chance to apply new skills, explore areas of interest, and gain practical experience. You won't be navigating this alone-our team culture emphasizes peer support, collaboration, and knowledge sharing on every project. We're in it together Mutual support and respect are one of BDO's core values and we're proud of our distinctive, people-centred culture. From informal success conversations to formal mentoring and coaching, we'll support you at every stage in your career, whatever your personal and professional needs. Our agile working framework helps us stay connected, bringing teams together where and when it counts so they can share ideas and help one another. At BDO, you'll always have access to the people and resources you need to do your best work. We know that collaboration is the key to creating value for the companies we work with and satisfying experiences for our colleagues, so we've invested in state-of-the-art collaboration spaces in our offices. BDO's people represent a wealth of knowledge and expertise, and we'll encourage you to build your network, work alongside others, and share your skills and experiences. With a range of multidisciplinary events and dedicated resources, you'll never stop learning at BDO. We're looking forward to the future At BDO, we help entrepreneurial businesses to succeed, fueling the UK economy. Our success is powered by our people, which is why we're always finding new ways to invest in you. Across the UK thousands of unique minds continue to come together to help companies we work with to achieve their ambitions. We've got a clear purpose, and we're confident in our future, because we're adapting and evolving to build on our strengths, ensuring we continue to find the right combination of global reach, integrity and expertise. We shape the future together with openness and clarity, because we believe in empowering people to think creatively about how we can do things better.
Lynx Recruitment Ltd
Junior PCI Penetration Tester
Lynx Recruitment Ltd
JUNIOR PCI PENETRATION TESTERS - LONDON (REMOTE) 35,000 - 45,000 Fully Remote (UK-based) Cybersecurity Scale-Up A rapidly growing cybersecurity company is seeking Junior PCI Penetration Testers to join their expanding offensive security team. The Role: Conduct PCI-DSS v4.0 compliance testing including manual penetration testing, quarterly vulnerability scanning, and network segmentation assessments Manage client engagements from scoping through to delivery Perform security assessments using industry-standard tools (Nessus, nmap, Burp Suite, Metasploit) Report findings to technical and non-technical stakeholders Support clients in maintaining PCI-DSS compliance Essential Requirements: UK Bachelor's degree in Computer Science, Cybersecurity or related subject 1+ years commercial penetration testing experience Strong understanding of operating systems, networking fundamentals, and security concepts Exposure to or interest in PCI-DSS compliance testing Programming/scripting experience Genuine passion for security (CTFs, bug bounty, TryHackMe, personal projects) Desirable: Progress towards OSCP, CPENT, CEH, or CompTIA Security+ Experience with vulnerability scanning tools Understanding of PCI-DSS framework Company Culture: Graduate-focused team valuing technical depth and continuous learning Strong computer science fundamentals required Looking for mouldable candidates who demonstrate passion for technology beyond work hours Location: Fully remote within UK, optional hybrid working from London office
Jan 09, 2026
Full time
JUNIOR PCI PENETRATION TESTERS - LONDON (REMOTE) 35,000 - 45,000 Fully Remote (UK-based) Cybersecurity Scale-Up A rapidly growing cybersecurity company is seeking Junior PCI Penetration Testers to join their expanding offensive security team. The Role: Conduct PCI-DSS v4.0 compliance testing including manual penetration testing, quarterly vulnerability scanning, and network segmentation assessments Manage client engagements from scoping through to delivery Perform security assessments using industry-standard tools (Nessus, nmap, Burp Suite, Metasploit) Report findings to technical and non-technical stakeholders Support clients in maintaining PCI-DSS compliance Essential Requirements: UK Bachelor's degree in Computer Science, Cybersecurity or related subject 1+ years commercial penetration testing experience Strong understanding of operating systems, networking fundamentals, and security concepts Exposure to or interest in PCI-DSS compliance testing Programming/scripting experience Genuine passion for security (CTFs, bug bounty, TryHackMe, personal projects) Desirable: Progress towards OSCP, CPENT, CEH, or CompTIA Security+ Experience with vulnerability scanning tools Understanding of PCI-DSS framework Company Culture: Graduate-focused team valuing technical depth and continuous learning Strong computer science fundamentals required Looking for mouldable candidates who demonstrate passion for technology beyond work hours Location: Fully remote within UK, optional hybrid working from London office
Remote Hybrid Cyber Security Consultant: Pen Testing
Nomios Oxford, Oxfordshire
A leading information security company in the UK is seeking an experienced penetration tester to conduct thorough tests across various environments, including web applications and network infrastructure. The role offers flexibility to work remotely or from offices in Oxford or Glasgow, and emphasizes professional growth through training and certification sponsorship. Candidates should have significant experience in penetration testing, strong communication skills, and relevant certifications. Join a dedicated team focused on enhancing customer security and fostering personal development.
Jan 09, 2026
Full time
A leading information security company in the UK is seeking an experienced penetration tester to conduct thorough tests across various environments, including web applications and network infrastructure. The role offers flexibility to work remotely or from offices in Oxford or Glasgow, and emphasizes professional growth through training and certification sponsorship. Candidates should have significant experience in penetration testing, strong communication skills, and relevant certifications. Join a dedicated team focused on enhancing customer security and fostering personal development.
Penetration Tester
Ncounter LTD Corsham, Wiltshire
Red Team Operator / Penetration Tester (SC or DV Cleared) £550-600 p/d Ncounter is supporting a specialist Defence consultancy on two upcoming Red Team engagements within a major Defence programme. These are initial 3-month contracts, with a strong likelihood of extension, forming the first wave of a wider pipeline of similar work expected over the next 12 months click apply for full job details
Jan 08, 2026
Contractor
Red Team Operator / Penetration Tester (SC or DV Cleared) £550-600 p/d Ncounter is supporting a specialist Defence consultancy on two upcoming Red Team engagements within a major Defence programme. These are initial 3-month contracts, with a strong likelihood of extension, forming the first wave of a wider pipeline of similar work expected over the next 12 months click apply for full job details
Damia Group Ltd
Penetration Tester
Damia Group Ltd Wokingham, Berkshire
Penetration Tester - Hybrid (Wokingham) - Circa £400 per day inside ir35 - 2/3 months+ All applicants must hold an active SC clearance. My client is a global leading IT consultancy. They are on the hunt for an SC cleared PEN Tester to join them on an assignment until the end of the year click apply for full job details
Jan 08, 2026
Contractor
Penetration Tester - Hybrid (Wokingham) - Circa £400 per day inside ir35 - 2/3 months+ All applicants must hold an active SC clearance. My client is a global leading IT consultancy. They are on the hunt for an SC cleared PEN Tester to join them on an assignment until the end of the year click apply for full job details
Penetration Tester (Senior)
Starling Bank Limited Southampton, Hampshire
Starling is the UK's first and leading digital bank on a mission to fix banking! We built a new kind of bank because we knew technology had the power to help people save, spend and manage their money in a new and transformative way. Read more about Our Story here. We're a fully licensed UK bank with the culture and spirit of a fast-moving, disruptive tech company. We're a bank, but better: fairer, easier to use and designed to demystify money for everyone. We employ more than 3,000 people across our London, Southampton, Cardiff and Manchester offices. Our technologists are at the very heart of Starling and enjoy working in a fast-paced environment that is all about building things, creating new stuff, and disruptive technology that keeps us on the cutting edge of fintech. We operate a flat structure to empower you to make decisions regardless of what your primary responsibilities may be, innovation and collaboration will be at the core of everything you do. Help is never far away in our open culture, you will find support in your team and from across the business, we are in this together! The way to thrive and shine within Starling is to be a self-driven individual and be able to take full ownership of everything around you: From building things, designing, discovering, to sharing knowledge with your colleagues and making sure all processes are efficient and productive to deliver the best possible results for our customers. Our purpose is underpinned by five Starling values: Listen, Keep It Simple, Do The Right Thing, Own It, and Aim For Greatness. Hybrid Working We have a Hybrid approach to working here at Starling - our preference is that you're located within a commutable distance of one of our offices so that we're able to interact and collaborate in person. About the Role As an experienced Penetration Tester you will be working with talented cyber security professionals to protect Starling customers, company assets and systems using the latest technologies and techniques. The primary objective for this role is to collaborate with, support, and guide Starling's engineering and operation functions to ensure our services are designed, developed and operated securely. As an experienced member of our penetration testing team you will directly interact with multiple areas of the business to understand requirements, define the scope and approach to testing (including undertaking appropriate research), and produce reporting information aligned to our risk framework. In addition, we understand the importance of knowledge and expertise remaining current and you shall support the continued advancement of our penetration testing through research, design and implementation of new solutions, including automation. Responsibilities Scoping and performing mobile, web application, cloud, and infrastructure penetration tests. Automation of security testing, and development of internal tooling, to achieve continuous assurance. Collaboration with engineering teams to facilitate secure development, including: Review and analysis of proposed technical solutions to identify appropriate security controls. Input and guidance to security related technical architecture and design decisions. Code review of features and critical security components. Practical security testing. Advising on remediation of security issues and processes to address root causes. Security assurance reviews of third-party solutions. Identifying and implementing improvements to the team's internal processes and procedures. Review, analysis and reporting of external threats relevant to Starling systems and solutions, in the context of Starling's desired security posture. We're open-minded when it comes to hiring and we care more about aptitude and attitude than specific experience or qualifications. Ideally, we would like: 5+ years technical information security experience. Experience of mobile, web application, cloud and infrastructure penetration testing. Strong technical knowledge in: Mobile security (iOS and Android) Web application security Networking and associated protocols Cloud security (AWS and GCP) Containers and Kubernetes A desire to learn, and ability to apply technical security knowledge to new and unfamiliar areas. CREST, OSCP or similar industry penetration testing qualification A good understanding of applied cryptographic techniques. Reverse engineering and exploit development capabilities. Experience of security testing in an agile SDLC. Threat modelling experience. Experience performing code reviews, particularly in Java and Go. Experience of fulfilling a client facing security consulting role. Excellent verbal and written communication skills. Experience in automation of security testing, with previous development experience desirable. Interview process Interviewing is a two way process and we want you to have the time and opportunity to get to know us, as much as we are getting to know you! Our interviews are conversational and we want to get the best from you, so come with questions and be curious. In general you can expect the below, following a chat with one of our Talent Team: First stage with the Penetration Testing Team Lead Second stage with additional members of the Penetration Testing team Final stage with Infosec Director and CISO We have a Hybrid approach to working here at Starling - our preference is that you're located within a commutable distance of one of our offices so that we're able to interact and collaborate in person. In Technology, we're asking that you attend the office a minimum of 1 day per week. 25 days holiday (plus take your public holiday allowance whenever works best for you) An extra day's holiday for your birthday Annual leave is increased with length of service, and you can choose to buy or sell up to five extra days off 16 hours paid volunteering time a year Salary sacrifice, company enhanced pension scheme Life insurance at 4x your salary & group income protection Private Medical Insurance with VitalityHealth including mental health support and cancer care. Partner benefits include discounts with Waitrose, Mr&Mrs Smith and Peloton Generous family-friendly policies Perkbox membership giving access to retail discounts, a wellness platform for physical and mental health, and weekly free and boosted perks Access to initiatives like Cycle to Work, Salary Sacrificed Gym partnerships and Electric Vehicle (EV) leasing About Us You may be put off applying for a role because you don't tick every box. Forget that! While we can't accommodate every flexible working request, we're always open to discussion. So, if you're excited about working with us, but aren't sure if you're 100% there yet, get in touch anyway. We're on a mission to radically reshape banking - and that starts with our brilliant team. Whatever came before, we're proud to bring together people of all backgrounds and experiences who love working together to solve problems. Starling is an equal opportunity employer, and we're proud of our ongoing efforts to foster diversity & inclusion in the workplace. Individuals seeking employment at Starling Bank are considered without regard to race, religion, national origin, age, sex, gender, gender identity, gender expression, sexual orientation, marital status, medical condition, ancestry, physical or mental disability, military or veteran status, or any other characteristic protected by applicable law. When you provide us with this information, you are doing so at your own consent, with full knowledge that we will process this personal data in accordance with our Privacy Notice. By submitting your application, you agree that Starling Bank will collect your personal data for recruiting and related purposes. Our Privacy Notice explains what personal information we will process, where we will process your personal information, its purposes for processing your personal information, and the rights you can exercise over our use of your personal information.
Jan 01, 2026
Full time
Starling is the UK's first and leading digital bank on a mission to fix banking! We built a new kind of bank because we knew technology had the power to help people save, spend and manage their money in a new and transformative way. Read more about Our Story here. We're a fully licensed UK bank with the culture and spirit of a fast-moving, disruptive tech company. We're a bank, but better: fairer, easier to use and designed to demystify money for everyone. We employ more than 3,000 people across our London, Southampton, Cardiff and Manchester offices. Our technologists are at the very heart of Starling and enjoy working in a fast-paced environment that is all about building things, creating new stuff, and disruptive technology that keeps us on the cutting edge of fintech. We operate a flat structure to empower you to make decisions regardless of what your primary responsibilities may be, innovation and collaboration will be at the core of everything you do. Help is never far away in our open culture, you will find support in your team and from across the business, we are in this together! The way to thrive and shine within Starling is to be a self-driven individual and be able to take full ownership of everything around you: From building things, designing, discovering, to sharing knowledge with your colleagues and making sure all processes are efficient and productive to deliver the best possible results for our customers. Our purpose is underpinned by five Starling values: Listen, Keep It Simple, Do The Right Thing, Own It, and Aim For Greatness. Hybrid Working We have a Hybrid approach to working here at Starling - our preference is that you're located within a commutable distance of one of our offices so that we're able to interact and collaborate in person. About the Role As an experienced Penetration Tester you will be working with talented cyber security professionals to protect Starling customers, company assets and systems using the latest technologies and techniques. The primary objective for this role is to collaborate with, support, and guide Starling's engineering and operation functions to ensure our services are designed, developed and operated securely. As an experienced member of our penetration testing team you will directly interact with multiple areas of the business to understand requirements, define the scope and approach to testing (including undertaking appropriate research), and produce reporting information aligned to our risk framework. In addition, we understand the importance of knowledge and expertise remaining current and you shall support the continued advancement of our penetration testing through research, design and implementation of new solutions, including automation. Responsibilities Scoping and performing mobile, web application, cloud, and infrastructure penetration tests. Automation of security testing, and development of internal tooling, to achieve continuous assurance. Collaboration with engineering teams to facilitate secure development, including: Review and analysis of proposed technical solutions to identify appropriate security controls. Input and guidance to security related technical architecture and design decisions. Code review of features and critical security components. Practical security testing. Advising on remediation of security issues and processes to address root causes. Security assurance reviews of third-party solutions. Identifying and implementing improvements to the team's internal processes and procedures. Review, analysis and reporting of external threats relevant to Starling systems and solutions, in the context of Starling's desired security posture. We're open-minded when it comes to hiring and we care more about aptitude and attitude than specific experience or qualifications. Ideally, we would like: 5+ years technical information security experience. Experience of mobile, web application, cloud and infrastructure penetration testing. Strong technical knowledge in: Mobile security (iOS and Android) Web application security Networking and associated protocols Cloud security (AWS and GCP) Containers and Kubernetes A desire to learn, and ability to apply technical security knowledge to new and unfamiliar areas. CREST, OSCP or similar industry penetration testing qualification A good understanding of applied cryptographic techniques. Reverse engineering and exploit development capabilities. Experience of security testing in an agile SDLC. Threat modelling experience. Experience performing code reviews, particularly in Java and Go. Experience of fulfilling a client facing security consulting role. Excellent verbal and written communication skills. Experience in automation of security testing, with previous development experience desirable. Interview process Interviewing is a two way process and we want you to have the time and opportunity to get to know us, as much as we are getting to know you! Our interviews are conversational and we want to get the best from you, so come with questions and be curious. In general you can expect the below, following a chat with one of our Talent Team: First stage with the Penetration Testing Team Lead Second stage with additional members of the Penetration Testing team Final stage with Infosec Director and CISO We have a Hybrid approach to working here at Starling - our preference is that you're located within a commutable distance of one of our offices so that we're able to interact and collaborate in person. In Technology, we're asking that you attend the office a minimum of 1 day per week. 25 days holiday (plus take your public holiday allowance whenever works best for you) An extra day's holiday for your birthday Annual leave is increased with length of service, and you can choose to buy or sell up to five extra days off 16 hours paid volunteering time a year Salary sacrifice, company enhanced pension scheme Life insurance at 4x your salary & group income protection Private Medical Insurance with VitalityHealth including mental health support and cancer care. Partner benefits include discounts with Waitrose, Mr&Mrs Smith and Peloton Generous family-friendly policies Perkbox membership giving access to retail discounts, a wellness platform for physical and mental health, and weekly free and boosted perks Access to initiatives like Cycle to Work, Salary Sacrificed Gym partnerships and Electric Vehicle (EV) leasing About Us You may be put off applying for a role because you don't tick every box. Forget that! While we can't accommodate every flexible working request, we're always open to discussion. So, if you're excited about working with us, but aren't sure if you're 100% there yet, get in touch anyway. We're on a mission to radically reshape banking - and that starts with our brilliant team. Whatever came before, we're proud to bring together people of all backgrounds and experiences who love working together to solve problems. Starling is an equal opportunity employer, and we're proud of our ongoing efforts to foster diversity & inclusion in the workplace. Individuals seeking employment at Starling Bank are considered without regard to race, religion, national origin, age, sex, gender, gender identity, gender expression, sexual orientation, marital status, medical condition, ancestry, physical or mental disability, military or veteran status, or any other characteristic protected by applicable law. When you provide us with this information, you are doing so at your own consent, with full knowledge that we will process this personal data in accordance with our Privacy Notice. By submitting your application, you agree that Starling Bank will collect your personal data for recruiting and related purposes. Our Privacy Notice explains what personal information we will process, where we will process your personal information, its purposes for processing your personal information, and the rights you can exercise over our use of your personal information.
Remote Penetration Tester (Germany) - Lead Security Assessments
zyncgroup.io Stockport, Lancashire
A global leader in cybersecurity is seeking a Penetration Tester to perform tests on various infrastructures and applications. The ideal candidate has several years of experience, strong knowledge in IT networks, and proficiency in software like Python. This fully remote role, based in Germany, offers attractive salaries, growth opportunities, and comprehensive training alongside an inclusive team. Candidates must be fluent in German (C1) and possess excellent communication skills.
Jan 01, 2026
Full time
A global leader in cybersecurity is seeking a Penetration Tester to perform tests on various infrastructures and applications. The ideal candidate has several years of experience, strong knowledge in IT networks, and proficiency in software like Python. This fully remote role, based in Germany, offers attractive salaries, growth opportunities, and comprehensive training alongside an inclusive team. Candidates must be fluent in German (C1) and possess excellent communication skills.
Web App Security Penetration Tester
Waterstons Limited City, Glasgow
A leading IT consultancy in the UK is looking for a technical security expert to join their Cyber team. The role includes performing penetration testing, writing reports for clients, and improving methodologies. Key qualifications include proven experience in security assessments, knowledge of vulnerability mitigation, and technical tools like Metasploit and Burp Suite. The company offers unlimited holidays and a supportive work environment, emphasizing flexibility and personal growth.
Jan 01, 2026
Full time
A leading IT consultancy in the UK is looking for a technical security expert to join their Cyber team. The role includes performing penetration testing, writing reports for clients, and improving methodologies. Key qualifications include proven experience in security assessments, knowledge of vulnerability mitigation, and technical tools like Metasploit and Burp Suite. The company offers unlimited holidays and a supportive work environment, emphasizing flexibility and personal growth.
Acora Limited
Lead Red Team Penetration Tester
Acora Limited
A leading cybersecurity firm in the Greater London area is seeking a Penetration Tester to lead the design and execution of red team operations. You will conduct complex adversary simulations, manage a team of security operators, and collaborate with multiple departments to enhance client security. The ideal candidate will have significant experience in offensive security, a strong technical background, and proven leadership skills. This role focuses on operational excellence and strategic communication with executive stakeholders.
Jan 01, 2026
Full time
A leading cybersecurity firm in the Greater London area is seeking a Penetration Tester to lead the design and execution of red team operations. You will conduct complex adversary simulations, manage a team of security operators, and collaborate with multiple departments to enhance client security. The ideal candidate will have significant experience in offensive security, a strong technical background, and proven leadership skills. This role focuses on operational excellence and strategic communication with executive stakeholders.
Penetration Tester
Darkshield Technologies Ltd. City, York
About Darkshield Darkshield is an expert cybersecurity agency based in York, UK. We help organisations navigate an increasingly complex digital landscape by providing expert services in penetration testing, vulnerability assessment, managed security, and more. Our mission is to protect businesses by delivering tailored, cutting-edge cybersecurity solutions that keep them resilient and ahead of cyber threats. The Role We are looking for an experienced Penetration Tester to join our team. You will conduct security assessments and ethical hacking activities to identify vulnerabilities in client systems. This role requires a deep understanding of attack techniques, security frameworks, and risk mitigation strategies. Key Responsibilities Conduct penetration testing on networks, applications, and infrastructure. Identify, analyse, and report security vulnerabilities. Simulate cyberattacks to evaluate security defences. Develop security testing methodologies and improve existing processes. Collaborate with clients to provide security recommendations and mitigation strategies. Stay up to date with the latest security threats, exploits, and hacking techniques. Assist in security awareness training and red team exercises. Provide clear and actionable reports to both technical and non-technical audiences. Requirements Proven experience in penetration testing and ethical hacking. Proficiency in tools such as Burp Suite, Metasploit, Nmap, Wireshark, and Kali Linux. Strong knowledge of web application, network, and infrastructure security. Experience with scripting and automation using Python, Bash, or PowerShell. Certifications such as OSCP, OSCE, CEH, or similar are highly desirable. Understanding of regulatory compliance standards (ISO 27001, GDPR, NIST, etc.). Excellent problem-solving skills and attention to detail. Ability to communicate findings and recommendations effectively to clients. Why Join Darkshield? Work with a passionate and expert cybersecurity team. Engage in challenging and diverse projects. Support for professional development, including training and certification assistance. Flexible working arrangements, including remote options. A collaborative and innovative work environment. If you are a skilled Penetration Tester looking for an exciting role, we'd love to hear from you.
Jan 01, 2026
Full time
About Darkshield Darkshield is an expert cybersecurity agency based in York, UK. We help organisations navigate an increasingly complex digital landscape by providing expert services in penetration testing, vulnerability assessment, managed security, and more. Our mission is to protect businesses by delivering tailored, cutting-edge cybersecurity solutions that keep them resilient and ahead of cyber threats. The Role We are looking for an experienced Penetration Tester to join our team. You will conduct security assessments and ethical hacking activities to identify vulnerabilities in client systems. This role requires a deep understanding of attack techniques, security frameworks, and risk mitigation strategies. Key Responsibilities Conduct penetration testing on networks, applications, and infrastructure. Identify, analyse, and report security vulnerabilities. Simulate cyberattacks to evaluate security defences. Develop security testing methodologies and improve existing processes. Collaborate with clients to provide security recommendations and mitigation strategies. Stay up to date with the latest security threats, exploits, and hacking techniques. Assist in security awareness training and red team exercises. Provide clear and actionable reports to both technical and non-technical audiences. Requirements Proven experience in penetration testing and ethical hacking. Proficiency in tools such as Burp Suite, Metasploit, Nmap, Wireshark, and Kali Linux. Strong knowledge of web application, network, and infrastructure security. Experience with scripting and automation using Python, Bash, or PowerShell. Certifications such as OSCP, OSCE, CEH, or similar are highly desirable. Understanding of regulatory compliance standards (ISO 27001, GDPR, NIST, etc.). Excellent problem-solving skills and attention to detail. Ability to communicate findings and recommendations effectively to clients. Why Join Darkshield? Work with a passionate and expert cybersecurity team. Engage in challenging and diverse projects. Support for professional development, including training and certification assistance. Flexible working arrangements, including remote options. A collaborative and innovative work environment. If you are a skilled Penetration Tester looking for an exciting role, we'd love to hear from you.
Web Application Tester
Waterstons Limited City, Glasgow
Who you'll be joining We're problem solvers at heart. Sometimes the answer is technology, sometimes it is strategy, and sometimes it is a strong cup of tea and a bit of thoughtful conversation. Whatever it takes, we work it out with our clients. We're an IT consultancy that helps organisations get the best out of their technology. That means keeping them secure and keeping the bad guys out, making sure everything works and is easy to use, and doing smart things with data and software to give their business an edge. It is important work, and we care about doing it well and for the right reasons. Life at Waterstons is friendly, flexible and built on trust. We hire people who are curious, thoughtful and good at getting to the heart of a problem. You get support, trust and room to grow in a place that still feels human. The unlimited holidays and private healthcare are a nice touch, although most people stay because it feels like the right place to do good work with good people. What You'll Be Doing A technical security expert with the ability to conduct penetration tests and the appetite to deliver a wide spectrum of interesting security related work seeking a new challenge to join our growing Cyber team to help shape the company's security and compliance services nationwide for a leading IT and business consultancy, supporting national and international clients. Your Day-to-Day Leading and delivering web application penetration testing, with an expectation to participate in infrastructure penetration testing, vulnerability assessments, and security audits across various business functions as needed Lead technical scoping activities and understanding a client's requirements to ensure they get the most out of their engagement with Waterstons Write clear, concise, and professional reports that are understandable to both technical and non-technical stakeholders. Being available to travel to client sites when required Improving areas of work, such as methodologies, tools and processes used by the team Helping upskill junior members and the wider cyber team Maintain up-to-date knowledge of emerging security threats and trends. Ability to manage multiple client engagements concurrently Act as a trusted partner to all of our clients What we're looking for If some (or most) of the following sound like you, we'd love to hear from you: Proven experience in performing penetration tests across a broad range of systems, more specifically web applications and APIs Wider technical knowledge of network and cloud infrastructure security Understanding of security vulnerabilities and risk mitigation techniques Extensive tooling experience such as Metasploit, Nmap, BloodHound, Eyewitness, Burp Suite, NIKTO, OWASP Zap etc. Nice to have Qualifications such as: CRT, CHECK Team Member (CTM) or CSTL, OSCP, CSTL Be a Cyber Essentials Plus Auditor Experience with scripting languages such as Python, Bash, or PowerShell Experience with Mobile Application Penetration Testing. How We Take Care of You As well as offering a competitive salary, we have an attractive benefits package including: A healthy work life balance with flexible and agile working being the norm Unlimited holiday allowance EV car scheme (salary sacrifice) Room to grow with supported development opportunities and sponsored training Enhanced family policies If you ever need it, company sick pay and life assurance Supported wellbeing with regular initiatives, an employee assistance programme and private medical insurance Flexible benefits such as a dental scheme, eye care support, season ticket loan and cycle to work We require a security check to be carried out on all colleagues due to the nature of some of our clients' industries. Waterstons is committed to creating and an inclusive, understanding, and flexible place to work. We value diversity, equality and inclusion and encourage everyone to 'bring their whole selves' to work. We believe that a company that works to truly embrace and value diversity, create an environment where everyone from any background can do their best work, and feel valued and appreciated is a better company to work for. Privacy Statement Waterstons are gathering the data in this application for the purpose of recruitment and to ensure we can contact you regarding this application. For information about what we do with your personal data see our Privacy Notice.
Jan 01, 2026
Full time
Who you'll be joining We're problem solvers at heart. Sometimes the answer is technology, sometimes it is strategy, and sometimes it is a strong cup of tea and a bit of thoughtful conversation. Whatever it takes, we work it out with our clients. We're an IT consultancy that helps organisations get the best out of their technology. That means keeping them secure and keeping the bad guys out, making sure everything works and is easy to use, and doing smart things with data and software to give their business an edge. It is important work, and we care about doing it well and for the right reasons. Life at Waterstons is friendly, flexible and built on trust. We hire people who are curious, thoughtful and good at getting to the heart of a problem. You get support, trust and room to grow in a place that still feels human. The unlimited holidays and private healthcare are a nice touch, although most people stay because it feels like the right place to do good work with good people. What You'll Be Doing A technical security expert with the ability to conduct penetration tests and the appetite to deliver a wide spectrum of interesting security related work seeking a new challenge to join our growing Cyber team to help shape the company's security and compliance services nationwide for a leading IT and business consultancy, supporting national and international clients. Your Day-to-Day Leading and delivering web application penetration testing, with an expectation to participate in infrastructure penetration testing, vulnerability assessments, and security audits across various business functions as needed Lead technical scoping activities and understanding a client's requirements to ensure they get the most out of their engagement with Waterstons Write clear, concise, and professional reports that are understandable to both technical and non-technical stakeholders. Being available to travel to client sites when required Improving areas of work, such as methodologies, tools and processes used by the team Helping upskill junior members and the wider cyber team Maintain up-to-date knowledge of emerging security threats and trends. Ability to manage multiple client engagements concurrently Act as a trusted partner to all of our clients What we're looking for If some (or most) of the following sound like you, we'd love to hear from you: Proven experience in performing penetration tests across a broad range of systems, more specifically web applications and APIs Wider technical knowledge of network and cloud infrastructure security Understanding of security vulnerabilities and risk mitigation techniques Extensive tooling experience such as Metasploit, Nmap, BloodHound, Eyewitness, Burp Suite, NIKTO, OWASP Zap etc. Nice to have Qualifications such as: CRT, CHECK Team Member (CTM) or CSTL, OSCP, CSTL Be a Cyber Essentials Plus Auditor Experience with scripting languages such as Python, Bash, or PowerShell Experience with Mobile Application Penetration Testing. How We Take Care of You As well as offering a competitive salary, we have an attractive benefits package including: A healthy work life balance with flexible and agile working being the norm Unlimited holiday allowance EV car scheme (salary sacrifice) Room to grow with supported development opportunities and sponsored training Enhanced family policies If you ever need it, company sick pay and life assurance Supported wellbeing with regular initiatives, an employee assistance programme and private medical insurance Flexible benefits such as a dental scheme, eye care support, season ticket loan and cycle to work We require a security check to be carried out on all colleagues due to the nature of some of our clients' industries. Waterstons is committed to creating and an inclusive, understanding, and flexible place to work. We value diversity, equality and inclusion and encourage everyone to 'bring their whole selves' to work. We believe that a company that works to truly embrace and value diversity, create an environment where everyone from any background can do their best work, and feel valued and appreciated is a better company to work for. Privacy Statement Waterstons are gathering the data in this application for the purpose of recruitment and to ensure we can contact you regarding this application. For information about what we do with your personal data see our Privacy Notice.
Penetration Tester
zyncgroup.io Stockport, Lancashire
I am hiring a Penetration Tester on behalf of a global leader in the industry, specialising in providing innovative solutions and services across diverse sectors. Known for their commitment to excellence, the company leverages cutting-edge technology and a customer-centric approach to drive efficiency and growth. With a strong focus on sustainability and collaboration, they foster an inclusive work environment, empowering employees to deliver impactful results while contributing to the company's vision of shaping a better future. In this role you will be responsible for: Perform penetration tests on internal and external infrastructures, networks, web applications, APIs and cloud environments, for a wide range of clients. Create high-quality penetration test reports, including clear findings, exploit details, risk ratings, and remediation guidance, and present results directly to clients. Collaborate closely with the Blue Team to exchange threat insights, validate detections, and strengthen clients' overall security posture. Develop and maintain custom tools, scripts, and automation, enhancing your testing workflow and contributing to internal research projects. Continuously research new vulnerabilities, attack techniques, and exploitation methods, supported by participation in platforms like HackTheBox or OffSec Proving Grounds. This role is remote from anywhere in Germany. Essential: Several years professional experience conducting penetration tests Strong knowledge of IT networks and Operating Systems Experience with programming languages e.g. Python, JavaScript etc. Ability to create clear, structured, and client-ready pen test reports, and confidently present findings to technical and non-technical audiences. Minimum C1 level German or above with a good knowledge of English Desirable: Certifications such as OSCP, OSEP Experience with IoT and/or OT Penetration Tests Company Benefits: Attractive salary Strong progression plans Excellent training opportunities and personal development Opportunity to attain certifications Work alongside an inclusive team of experts CALL TO ACTION If you have the required skills and would like to have a positive impact on people's lives all over the world via them enjoying the products you help create, call or send your CV to for a response. Penetration Tester- Remote/Germany - Up to €90k DOE - 5992
Jan 01, 2026
Full time
I am hiring a Penetration Tester on behalf of a global leader in the industry, specialising in providing innovative solutions and services across diverse sectors. Known for their commitment to excellence, the company leverages cutting-edge technology and a customer-centric approach to drive efficiency and growth. With a strong focus on sustainability and collaboration, they foster an inclusive work environment, empowering employees to deliver impactful results while contributing to the company's vision of shaping a better future. In this role you will be responsible for: Perform penetration tests on internal and external infrastructures, networks, web applications, APIs and cloud environments, for a wide range of clients. Create high-quality penetration test reports, including clear findings, exploit details, risk ratings, and remediation guidance, and present results directly to clients. Collaborate closely with the Blue Team to exchange threat insights, validate detections, and strengthen clients' overall security posture. Develop and maintain custom tools, scripts, and automation, enhancing your testing workflow and contributing to internal research projects. Continuously research new vulnerabilities, attack techniques, and exploitation methods, supported by participation in platforms like HackTheBox or OffSec Proving Grounds. This role is remote from anywhere in Germany. Essential: Several years professional experience conducting penetration tests Strong knowledge of IT networks and Operating Systems Experience with programming languages e.g. Python, JavaScript etc. Ability to create clear, structured, and client-ready pen test reports, and confidently present findings to technical and non-technical audiences. Minimum C1 level German or above with a good knowledge of English Desirable: Certifications such as OSCP, OSEP Experience with IoT and/or OT Penetration Tests Company Benefits: Attractive salary Strong progression plans Excellent training opportunities and personal development Opportunity to attain certifications Work alongside an inclusive team of experts CALL TO ACTION If you have the required skills and would like to have a positive impact on people's lives all over the world via them enjoying the products you help create, call or send your CV to for a response. Penetration Tester- Remote/Germany - Up to €90k DOE - 5992
Penetration Tester (IC2)
OnSecurity LLP City, London
AI-Augmented Pentesting: Human Expertise Where It Matters Most. At OnSecurity, we're redefining cybersecurity through AI-augmented penetration testing - the perfect blend of AI efficiency and human ingenuity. We deliver comprehensive, CREST-approved testing that saves time and money without compromising quality. Our all-in-one platform combines AI-driven automation with expert human insight to provide faster, more accurate results. The outcome? Streamlined testing, actionable intelligence, and security at scale. We're revolutionising how organisations protect their digital assets helping businesses stay secure, resilient, and one step ahead of threats. Working Hours and Location We are based in the UK with employees working remotely. Some roles may have hybrid preference depending on the team. You can ask us about the best working hours and work setup in the recruitment process if there's something that's important to you. We try to be as flexible as possible. All we ask is that everyone is online between our core hours of 10:00-16:00 (UK time) so that everyone overlaps for the majority of the day. It's up to you and your manager to find the right schedule that works for you and your team. Role Purpose As a Penetration Tester , you'll play a central role in delivering high-quality, manual security testing to OnSecurity clients across a variety of sectors. You'll take ownership of full test cycles; scoping, delivery, reporting, and client communication while helping to mentor junior testers and enhance OnSecurity's technical capabilities. This role blends autonomy, technical depth, and real impact. Role Importance, Responsibilities and Impact What you will be doing: Delivering web, API, mobile, and infrastructure penetration tests remotely. Identifying, analysing, and exploiting vulnerabilities beyond automated tools. Producing detailed, high-quality reports for developers and security teams. Collaborating with internal testers to refine methodologies and tooling. Contributing to TestNet and methodology development. Mentoring Junior testers. What you won't be doing: Following rigid scripts, you'll be encouraged to think critically and creatively. Getting lost in bureaucracy, we empower our testers to deliver results via our intuitive portal Timeline for Role Expectations Within 1 month: Become familiar with our testing platform and delivery process. Within 3 months: Lead your own engagements end-to-end and produce client-ready reports. Within 6 months: Contribute to internal tooling, mentor junior testers, and help shape new methodologies. About You This role is a great fit if you . Minimum 2 years' experience delivering penetration tests in one or more disciplines. Strong knowledge of OWASP Top 10 and common vulnerability classes. Excellent written and verbal communication skills. Enthusiastic team player who values collaboration and quality delivery. Compensation What you will get for your hard work . A competitive compensation package . The salary range for this role is roughly £35k - £60k annually, depending on experience. Work at one of the fastest-growing Cyber Security Scale-Ups revolutionising pentesting. A clear progression plan. We want you to keep growing. That means trying new things, leading others, challenging the status quo and owning your impact, always with our complete support. Flexibility : We promote life-work balance at OnSecurity. We encourage everyone on our team to enjoy their life and ensure they have the balance they need to reach their full potential. Work where you work best. We're a distributed team. If you live in Bristol, we have a hybrid approach, if this is something that fits for your team. Otherwise, we are remote, and so we build our ways of working around this. Other benefits: 30 days of paid annual leave, plus bank holidays Company Pension Scheme Private Health Insurance with Vitality Employee Assistance Program (EAP) Group Life Assurance (x4 salary) Enhanced Maternity, Paternity, and Adoption Leave Paid study leave for employees to level up their skills Mentorship and Coaching Annual Performance reviews and recognition for high performance Regular socials and activities, online and in-person.
Jan 01, 2026
Full time
AI-Augmented Pentesting: Human Expertise Where It Matters Most. At OnSecurity, we're redefining cybersecurity through AI-augmented penetration testing - the perfect blend of AI efficiency and human ingenuity. We deliver comprehensive, CREST-approved testing that saves time and money without compromising quality. Our all-in-one platform combines AI-driven automation with expert human insight to provide faster, more accurate results. The outcome? Streamlined testing, actionable intelligence, and security at scale. We're revolutionising how organisations protect their digital assets helping businesses stay secure, resilient, and one step ahead of threats. Working Hours and Location We are based in the UK with employees working remotely. Some roles may have hybrid preference depending on the team. You can ask us about the best working hours and work setup in the recruitment process if there's something that's important to you. We try to be as flexible as possible. All we ask is that everyone is online between our core hours of 10:00-16:00 (UK time) so that everyone overlaps for the majority of the day. It's up to you and your manager to find the right schedule that works for you and your team. Role Purpose As a Penetration Tester , you'll play a central role in delivering high-quality, manual security testing to OnSecurity clients across a variety of sectors. You'll take ownership of full test cycles; scoping, delivery, reporting, and client communication while helping to mentor junior testers and enhance OnSecurity's technical capabilities. This role blends autonomy, technical depth, and real impact. Role Importance, Responsibilities and Impact What you will be doing: Delivering web, API, mobile, and infrastructure penetration tests remotely. Identifying, analysing, and exploiting vulnerabilities beyond automated tools. Producing detailed, high-quality reports for developers and security teams. Collaborating with internal testers to refine methodologies and tooling. Contributing to TestNet and methodology development. Mentoring Junior testers. What you won't be doing: Following rigid scripts, you'll be encouraged to think critically and creatively. Getting lost in bureaucracy, we empower our testers to deliver results via our intuitive portal Timeline for Role Expectations Within 1 month: Become familiar with our testing platform and delivery process. Within 3 months: Lead your own engagements end-to-end and produce client-ready reports. Within 6 months: Contribute to internal tooling, mentor junior testers, and help shape new methodologies. About You This role is a great fit if you . Minimum 2 years' experience delivering penetration tests in one or more disciplines. Strong knowledge of OWASP Top 10 and common vulnerability classes. Excellent written and verbal communication skills. Enthusiastic team player who values collaboration and quality delivery. Compensation What you will get for your hard work . A competitive compensation package . The salary range for this role is roughly £35k - £60k annually, depending on experience. Work at one of the fastest-growing Cyber Security Scale-Ups revolutionising pentesting. A clear progression plan. We want you to keep growing. That means trying new things, leading others, challenging the status quo and owning your impact, always with our complete support. Flexibility : We promote life-work balance at OnSecurity. We encourage everyone on our team to enjoy their life and ensure they have the balance they need to reach their full potential. Work where you work best. We're a distributed team. If you live in Bristol, we have a hybrid approach, if this is something that fits for your team. Otherwise, we are remote, and so we build our ways of working around this. Other benefits: 30 days of paid annual leave, plus bank holidays Company Pension Scheme Private Health Insurance with Vitality Employee Assistance Program (EAP) Group Life Assurance (x4 salary) Enhanced Maternity, Paternity, and Adoption Leave Paid study leave for employees to level up their skills Mentorship and Coaching Annual Performance reviews and recognition for high performance Regular socials and activities, online and in-person.
London Stock Exchange Group
Senior Penetration Tester: Apps, Cloud & Infra Lead
London Stock Exchange Group
A global financial services provider is seeking a Senior Penetration Tester to join their internal offensive security team in Greater London. The role involves conducting thorough penetration tests on applications, infrastructure, and cloud environments. Candidates should have proven experience in security testing, familiarity with tools such as Burp Suite, and capacity for technical reporting. This position promotes collaboration and continuous improvement in security methodologies, making a significant impact on the firm's security posture.
Jan 01, 2026
Full time
A global financial services provider is seeking a Senior Penetration Tester to join their internal offensive security team in Greater London. The role involves conducting thorough penetration tests on applications, infrastructure, and cloud environments. Candidates should have proven experience in security testing, familiarity with tools such as Burp Suite, and capacity for technical reporting. This position promotes collaboration and continuous improvement in security methodologies, making a significant impact on the firm's security posture.
Pen Tester
Stackstudio Digital Ltd. Reading, Berkshire
Role/Job Title:Pen Tester Work Location: Reading (3days) The Role We're looking for a Security Consultant / Senior Security Consultant with expertise in penetration testing. As part of our Cyber Security team, you shall perform penetration testing which includes internet, intranet, wireless, web application, social engineering and physical penetration testing click apply for full job details
Jan 01, 2026
Full time
Role/Job Title:Pen Tester Work Location: Reading (3days) The Role We're looking for a Security Consultant / Senior Security Consultant with expertise in penetration testing. As part of our Cyber Security team, you shall perform penetration testing which includes internet, intranet, wireless, web application, social engineering and physical penetration testing click apply for full job details

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