Newton Colmore
Cambridge, Cambridgeshire
Physicist - Defence Sector Engineering - Cambridge A growing Defence company, based in Cambridge, offers an exciting opportunity for a Physicist to work on a wide range of cutting-edge technologies that will enhance the UK's defence against external threats, with a focus on defensive technologies rather than offensive ones. You will be involved in a variety of physics projects, including (but not limited to) thermal, optics, electromagnetics, acoustics, fluidics, chemical, and other scientific technologies. If you have experience with complex projects in these fields, I recommend providing as much detail as possible on your CV. We are open to candidates from various sectors; however, it will be highly advantageous if you already have experience in the Defence sector. As you will be working in the Defence sector, you will need to be able to obtain security clearance or already hold security clearance. Given the increasing importance of Artificial Intelligence and Machine Learning in various sectors, a keen interest in these areas would be welcomed, as many of your projects will involve work in this field. In addition to working on complex and cutting-edge technologies, you will also be rewarded with an excellent starting salary, dependant on experience. The compensation package includes a bonus, enhanced pension, dental care, gym access, free lunch, and other excellent benefits. The level of experience sought can range from a PhD holder who has worked in a post-doc role to someone with years of industry experience. We are looking to recruit several individuals for this team, so if you are in the early stages of your career, you will receive development opportunities, and if you are further along in your career, you will have the chance to mentor junior team members. This company places a strong emphasis on collaboration, both within the team, with other teams, and with external parties. Given the anticipated high level of interest in this role, and the company's desire to recruit quickly, I recommend applying immediately if you are interested in this position to avoid missing out. For more general information, please feel free to call Andrew Welsh, Director of Medical Devices Recruitment, and Scientific Recruitment Specialists Newton Colmore, on (phone number removed), or submit an application, and one of our team members at Newton Colmore will contact you. Please note we will not be able to discuss the role specifics until we have a copy of your CV.
Physicist - Defence Sector Engineering - Cambridge A growing Defence company, based in Cambridge, offers an exciting opportunity for a Physicist to work on a wide range of cutting-edge technologies that will enhance the UK's defence against external threats, with a focus on defensive technologies rather than offensive ones. You will be involved in a variety of physics projects, including (but not limited to) thermal, optics, electromagnetics, acoustics, fluidics, chemical, and other scientific technologies. If you have experience with complex projects in these fields, I recommend providing as much detail as possible on your CV. We are open to candidates from various sectors; however, it will be highly advantageous if you already have experience in the Defence sector. As you will be working in the Defence sector, you will need to be able to obtain security clearance or already hold security clearance. Given the increasing importance of Artificial Intelligence and Machine Learning in various sectors, a keen interest in these areas would be welcomed, as many of your projects will involve work in this field. In addition to working on complex and cutting-edge technologies, you will also be rewarded with an excellent starting salary, dependant on experience. The compensation package includes a bonus, enhanced pension, dental care, gym access, free lunch, and other excellent benefits. The level of experience sought can range from a PhD holder who has worked in a post-doc role to someone with years of industry experience. We are looking to recruit several individuals for this team, so if you are in the early stages of your career, you will receive development opportunities, and if you are further along in your career, you will have the chance to mentor junior team members. This company places a strong emphasis on collaboration, both within the team, with other teams, and with external parties. Given the anticipated high level of interest in this role, and the company's desire to recruit quickly, I recommend applying immediately if you are interested in this position to avoid missing out. For more general information, please feel free to call Andrew Welsh, Director of Medical Devices Recruitment, and Scientific Recruitment Specialists Newton Colmore, on (phone number removed), or submit an application, and one of our team members at Newton Colmore will contact you. Please note we will not be able to discuss the role specifics until we have a copy of your CV.
Arm Limited
Cambridge, Cambridgeshire
About the role You'll lead Arm's Proactive Threat Defence function, defining and delivering a proactive assurance and threat-hunting programme that continuously tests and strengthens Arm's cyber defences and sharpens its threat-informed edge! This hands-on leadership role involves guiding a small, high-performing team, providing both technical direction and people leadership. The position partners closely with Detect & Respond, Vulnerability Management, Security Architecture, and internal customers to define and deliver a proactive defence roadmap. You will be setting strategy and remaining deeply engaged in technical design, execution, and iterative improvement. Responsibilities Design and lead red & purple team exercises Lead the strategy and delivery of red/purple team engagements aligned to real-world adversarial behaviour. Drive iterative improvement of detection, response, and resilience through defender collaboration. Ensure findings are prioritised, tracked, and remediated with clear understanding of risk and business impact. Penetration testing program (manual & autonomous) Define strategy and methodology across key technologies, platforms, and services. Embed testing into delivery lifecycles with platform owners and document risk with Governance, Risk & Compliance. Lead hypothesis-informed threat hunting Design and deliver structured hunting campaigns focused on high-value assets, emerging TTPs, and priority threat actors. Define metrics and report on coverage, effectiveness, and impact on improved detection capability. Leadership Line-manage and develop a specialist team. Foster a high-performance, psychologically safe culture. Shape the Cyber Defence Operations roadmap, aligning proactive capabilities to strategic risks and business priorities. Define and report critical metrics, reporting progress and risk to senior business leaders. Previous experience in proactive defence is a priority, however, the role will also lead development of Arm's threat intelligence capability, so any additional experience or desire to mature a threat intelligence program is favourable. Personal attributes & experience Leading proactive security functions (red teaming, pen testing, offensive engineering, intelligence). Solid understanding of modern threat actor TTPs and how to emulate them safely. Hands-on technical offensive security background (red teaming, penetration testing, exploit development, adversary emulation) with the credibility to act as a technical SME. Ability to translate technical outcomes into business-relevant risk and drive remediation at scale. Strong partnership focus, influencing at senior levels across technical and non-technical teams. Qualifications BSc or higher in a relevant field (e.g., Computer Science, Cyber Security, Digital Forensics, Information Security) or equivalent professional experience. Offensive security / threat hunting / incident response certifications advantageous (e.g., CREST, GIAC/GX, GCTI, GCFA, GCIH, GREM, GPEN, OSCP). Accommodations at Arm At Arm, we want to build extraordinary teams. If you need an adjustment or an accommodation during the recruitment process, please email . To note, by sending us the requested information, you consent to its use by Arm to arrange for appropriate accommodations. All accommodation or adjustment requests will be treated with confidentiality, and information concerning these requests will only be disclosed as necessary to provide the accommodation. Although this is not an exhaustive list, examples of support include breaks between interviews, having documents read aloud, or office accessibility. Please email us about anything we can do to accommodate you during the recruitment process. Hybrid Working at Arm Arm's approach to hybrid working is designed to create a working environment that supports both high performance and personal wellbeing. We believe in bringing people together face to face to enable us to work at pace, whilst recognizing the value of flexibility. Within that framework, we empower groups/teams to determine their own hybrid working patterns, depending on the work and the team's needs. Details of what this means for each role will be shared upon application. In some cases, the flexibility we can offer is limited by local legal, regulatory, tax, or other considerations, and where this is the case, we will collaborate with you to find the best solution. Please talk to us to find out more about what this could look like for you. Equal Opportunities at Arm Arm is an equal opportunity employer, committed to providing an environment of mutual respect where equal opportunities are available to all applicants and colleagues. We are a diverse organization of dedicated and innovative individuals, and don't discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.
About the role You'll lead Arm's Proactive Threat Defence function, defining and delivering a proactive assurance and threat-hunting programme that continuously tests and strengthens Arm's cyber defences and sharpens its threat-informed edge! This hands-on leadership role involves guiding a small, high-performing team, providing both technical direction and people leadership. The position partners closely with Detect & Respond, Vulnerability Management, Security Architecture, and internal customers to define and deliver a proactive defence roadmap. You will be setting strategy and remaining deeply engaged in technical design, execution, and iterative improvement. Responsibilities Design and lead red & purple team exercises Lead the strategy and delivery of red/purple team engagements aligned to real-world adversarial behaviour. Drive iterative improvement of detection, response, and resilience through defender collaboration. Ensure findings are prioritised, tracked, and remediated with clear understanding of risk and business impact. Penetration testing program (manual & autonomous) Define strategy and methodology across key technologies, platforms, and services. Embed testing into delivery lifecycles with platform owners and document risk with Governance, Risk & Compliance. Lead hypothesis-informed threat hunting Design and deliver structured hunting campaigns focused on high-value assets, emerging TTPs, and priority threat actors. Define metrics and report on coverage, effectiveness, and impact on improved detection capability. Leadership Line-manage and develop a specialist team. Foster a high-performance, psychologically safe culture. Shape the Cyber Defence Operations roadmap, aligning proactive capabilities to strategic risks and business priorities. Define and report critical metrics, reporting progress and risk to senior business leaders. Previous experience in proactive defence is a priority, however, the role will also lead development of Arm's threat intelligence capability, so any additional experience or desire to mature a threat intelligence program is favourable. Personal attributes & experience Leading proactive security functions (red teaming, pen testing, offensive engineering, intelligence). Solid understanding of modern threat actor TTPs and how to emulate them safely. Hands-on technical offensive security background (red teaming, penetration testing, exploit development, adversary emulation) with the credibility to act as a technical SME. Ability to translate technical outcomes into business-relevant risk and drive remediation at scale. Strong partnership focus, influencing at senior levels across technical and non-technical teams. Qualifications BSc or higher in a relevant field (e.g., Computer Science, Cyber Security, Digital Forensics, Information Security) or equivalent professional experience. Offensive security / threat hunting / incident response certifications advantageous (e.g., CREST, GIAC/GX, GCTI, GCFA, GCIH, GREM, GPEN, OSCP). Accommodations at Arm At Arm, we want to build extraordinary teams. If you need an adjustment or an accommodation during the recruitment process, please email . To note, by sending us the requested information, you consent to its use by Arm to arrange for appropriate accommodations. All accommodation or adjustment requests will be treated with confidentiality, and information concerning these requests will only be disclosed as necessary to provide the accommodation. Although this is not an exhaustive list, examples of support include breaks between interviews, having documents read aloud, or office accessibility. Please email us about anything we can do to accommodate you during the recruitment process. Hybrid Working at Arm Arm's approach to hybrid working is designed to create a working environment that supports both high performance and personal wellbeing. We believe in bringing people together face to face to enable us to work at pace, whilst recognizing the value of flexibility. Within that framework, we empower groups/teams to determine their own hybrid working patterns, depending on the work and the team's needs. Details of what this means for each role will be shared upon application. In some cases, the flexibility we can offer is limited by local legal, regulatory, tax, or other considerations, and where this is the case, we will collaborate with you to find the best solution. Please talk to us to find out more about what this could look like for you. Equal Opportunities at Arm Arm is an equal opportunity employer, committed to providing an environment of mutual respect where equal opportunities are available to all applicants and colleagues. We are a diverse organization of dedicated and innovative individuals, and don't discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, disability, or status as a protected veteran.
