Assystem GmbH

A leading engineering firm in the United Kingdom is seeking a Senior Planner to develop integrated project schedules for complex defence programmes. The ideal candidate will have significant experience in project planning, particularly in regulated environments, and strong proficiency in Primavera P6. Responsibilities include schedule analysis, risk management, and stakeholder collaboration. The role offers benefits such as a pension scheme, generous annual leave, and flexible working options.

Our Vacancy# Senior Planner Defence Permanent / Project Management London United Kingdom 19/01/26 On site 50,000 - 60,000 £/yr Share Job DescriptionThe Senior Planner is responsible for developing, maintaining, and assuring fully integrated project schedules for complex defence programmes. The role supports effective decision-making by providing accurate planning data, schedule analysis, and risk-informed forecasts aligned with defence governance and assurance requirements.Working closely with Project Managers, Engineering, Commercial, and Risk teams, the Senior Planner ensures that programme schedules reflect scope, cost, risk, and resource constraints, and comply with contractual and regulatory standards.Key ResponsibilitiesPlanning & Scheduling Develop and maintain integrated, resource- and cost-loaded schedules across the full project lifecycle (design, manufacture, test, acceptance, and in-service support). Establish planning structures aligned to WBS, CBS, and contract deliverables. Ensure schedules comply with defence and organisational planning standards and best practice.Programme Control & Reporting Provide schedule performance analysis including critical path, float, dependencies, and milestones. Support Earned Value Management (EVM) and schedule health assessments. Produce clear, accurate planning reports for internal governance, senior stakeholders, and external customers.Risk & Change Management Integrate risk, opportunity, and mitigation actions into project schedules. Support schedule risk analysis (e.g. Monte Carlo) where required. Assess schedule impacts of change requests and support change control processes.Stakeholder Collaboration Work closely with Project Managers to support delivery planning and decision-making. Liaise with engineering, supply chain, commercial, and delivery teams to ensure schedule realism. Provide planning input to bids, proposals, and contract negotiations as required.Assurance & Continuous Improvement Support internal and external assurance reviews, audits, and readiness assessments. Mentor junior planners and promote planning best practice. Contribute to the continuous improvement of planning processes, tools, and standards.Skills & ExperienceEssential Significant experience in project planning within defence, aerospace, engineering, or complex regulated environments. Strong proficiency in planning tools such as Primavera P6 (essential) British National Experience producing and maintaining integrated master schedules. Solid understanding of critical path analysis, schedule logic, and performance measurement. Ability to communicate complex planning information clearly to non-planning stakeholders.Desirable Experience working with MOD or equivalent defence customers. Knowledge of Earned Value Management (EVM). Experience supporting bids or major programme re-baselining. Familiarity with risk and schedule risk analysis techniques. Professional accreditation (e.g. APM, PMI) or working towards it.Behaviours & Attributes Analytical and detail-oriented with a proactive mindset. Confident working in complex, high-assurance environments. Strong stakeholder management and influencing skills. Able to work independently while supporting wider programme objectives. Committed to integrity, confidentiality, and compliance. Benefits include: Pension scheme (8% company contribution / 4% personal contribution) 25 days' paid annual leave + bank holidays + option to buy or sell days Professional fees reimbursed Flexible working Employee referral schemeWe are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people's ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.

A leading engineering company in the UK seeks an Engineering Manager for the EC&I department. This role involves coordinating projects for nuclear power plants, managing technical programmes, and leading multidisciplinary teams. Candidates should have a degree in Electrical or Control Engineering and expertise in EC&I design. The position offers hybrid work flexibility and a commitment to diversity.

An international energy consultancy is seeking Consents Consultants and Senior Consents Consultants based in Ipswich, UK. Responsibilities include supporting major infrastructure projects, preparing consent applications, and ensuring compliance with relevant regulations. Ideal candidates will have experience in planning and environmental permitting, strong organizational skills, and the ability to produce accurate documentation. Opportunities for growth and collaboration are available across multiple regions in the UK.

A leading engineering organization is seeking a Stakeholder Integration Officer based in Helensburgh. The role focuses on managing utility stakeholder engagement to ensure seamless integration with program and site stakeholders. Candidates should have a strong understanding of utility management and excellent communication skills. The position requires relevant project management qualifications and offers an opportunity to work on major engineering projects within the nuclear sector.

A leading engineering firm is seeking a Naval Architect to join their multi-disciplinary engineering team in Glasgow. The role involves contributing to the design and safety assurance of critical infrastructure in the Nuclear Defence area. Candidates should have a background in naval architecture, experience in regulated environments, and strong technical writing skills. This is a hybrid role with the expectation of part-time office presence. Opportunities for career growth and involvement in global projects are available.

A global engineering leader in the UK is seeking an experienced Electrical Engineer to join their Fusion and Modular Nuclear Business Unit. The role involves developing electrical system designs and ensuring compliance with nuclear safety requirements across multiple projects. The ideal candidate should have proven experience in regulated industries, strong knowledge of electrical distribution systems, and excellent communication skills. This position offers attractive social benefits and a hybrid work model with opportunities for career advancement.

Our Vacancy# Electrical Engineer Nuclear Permanent / Derby United Kingdom 18/12/25 On site Share# is a global leader committed to accelerating the energy transition. With 7,850 employees across 12 countries, we tackle the monumental task of switching to low-carbon energy. Our 55+ years of experience in highly regulated sectors ensure we deliver top-notch engineering, project management, and digital solutions. Job Description Join the Fusion and Modular Nuclear Business Unit! Assystem has an exciting opportunity for a ElectricalEngineer to join our expanding Fusion and Modular Nuclear (FMN) business unit. As leaders in the design and development of new technologies, you will have the opportunity to work across multiple cutting-edge projectsdeveloping technical solutions making net-zero power generation a reality.Providing engineering expertise in the design, analysis and verification of electrical systems used across nuclear facilities. The role supports new build, operational plant upgrades and decommissioning projects. The engineer ensures electrical designs are safe, compliant and integrated effectively with control, protection and mechanical systems throughout the lifecycle. Key Responsibilities Develop Electrical System Designs: Design electrical systems, including single-line diagrams, load schedules, cable routing, earthing and bonding arrangements, and equipment specifications. Produce Design Documentation: Create essential design documents such as electrical calculations, protection schemes, coordination studies, panel designs, and installation drawings. Apply Nuclear Safety Requirements: Interpret and apply nuclear safety requirements, ensuring electrical systems support reliability, maintainability, and defense in depth. Undertake Power System Studies: Conduct power system studies including load flow, fault level analysis, discrimination, and arc flash assessments when required. Select Electrical Equipment: Choose appropriate electrical equipment like LV/MV switchgear, transformers, UPS systems, motors, drives, and distribution components suited for nuclear environments. Ensure Design Compliance: Ensure designs comply with relevant standards such as BS EN 61508, BS 7671, IEC 60364, and nuclear site-specific requirements. Collaborate Across Teams: Work closely with EC&I, control systems, mechanical, civil, and safety engineers to ensure seamless integration across interfaces. Support Control Systems: Support the electrical aspects of instrumentation and control systems, including power supplies, segregation, EMC considerations, and environmental qualification. Engage in Design Reviews: Participate in design reviews, HAZOPs, failure mode assessments, and engineering substantiation activities to optimize safety and performance. Provide Support During Manufacturing & Commissioning: Support manufacturing, FAT, SAT, and commissioning phases, resolving electrical design issues and ensuring traceability to requirements. Over 55 years in nuclear engineering. Ranked among the top 3 largest nuclear engineering companies. Attractive social benefits, including an engaging Employee Committee and holiday bonuses. Ongoing training with numerous career opportunities. 70% of our managers are promoted internally! Hybrid work: 1-2 days remote per week. Skills and Experience Proven electrical engineering experience in regulated, safety-critical sectors-bringing hands-on expertise from industries like nuclear, defence, or energy. Strong grasp of electrical distribution systems-including protection principles and best-practice installation methods. Skilled in creating core electrical deliverables such as SLDs, cable calculations, equipment specs, and protection settings. Familiar with nuclear design expectations-from safety classifications and redundancy to segregation and qualification requirements. Knowledgeable in key UK and international standards, including BS 7671, IEC/BS EN, ENA docs, and more. Excellent communicator and collaborator-experienced working in multi-disciplinary project environmentsDesirable Able to use power system modelling tools like ETAP, Amtech, EasyPower or similar for accurate and efficient analysis. Experience in nuclear new build, plant life extension, or decommissioning-bringing valuable lifecycle insights. Understanding of C&I power supply design, including UPS selection and battery sizing for robust system reliability. Knowledge of EMC, lightning protection, and protective earthing schemes tailored for nuclear environments. Chartered Engineer status (or working toward it)-showcasing commitment to professional excellence. Experience reviewing vendor packages and conducting technical bid evaluations to support informed procurement decisions. Due to the nature of work to be undertaken applicants will be required to meet certain residency criteria in order to attain a minimum level of UK security clearance if not already security cleared to a minimum SC level. We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people's ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future. BPSS and SC required Ability to travel Assystem offices and customer sites within UK. To undertake work packages supporting major UK and international Nuclear Clients.

A leading engineering company in the UK is searching for an EC&I Commissioning Engineer to work on significant nuclear projects in Bridgwater. The role requires hands-on commissioning of safety-classified instrumentation and control systems. Ideal candidates will have a degree or HNC/HND in a relevant discipline and strong experience in calibration and interfacing DCS or PLC systems. Benefits include hybrid working opportunities, competitive pension, and professional development support.

Assystem is an international company with one mission: accelerate the energy transition around the world. Every day, our 7,500 switchers located in 12 countries (Europe, Middle East, Pacific Asia & Africa) connect their six thousand billion neurons to tackle the task of the century: switching to low-carbon energy. We are a collective committed to the actors who are making the energy switch. Sharing our knowledge, expertise and values allows us to innovate and think differently about the energy transition. To ensure a viable, efficient, and reliable energy future for all. Assystem is an International Engineering Consultancy with significant growth plans within our Energy & Infrastructure business here in the UK. Job Description Your Future Team: You will be joining an Embedded Manufacturing team our client site in Derby. The Manufacturing Engineer will be responsible for providing technical support to the production team, designing and developing production processes, and implementing process improvements to enhance the efficiency and effectiveness of the manufacturing operation. Your Missions: Improve manufacturing by analysing current processes and designing new ones for efficiency and cost reduction. ️ Develop quality control procedures to meet industry and customer standards. ️ Design new tools and equipment for better manufacturing. Conduct feasibility studies and cost analyses for new processes. Monitor production data, identify improvements, and boost productivity. ️ Ensure compliance with industry and nuclear safety regulations. Why join the community of Switchers?: The Group is currently ranked Third in the world for nuclear engineering. A dynamic career management policy to enable our employees to progress through our five business lines: operations, project, technical, sales and support functions Provide opportunities to work on exciting, global projects Access to an employee assistance programme with free mindfulness, health, wellbeing resources and a confidential support line available 24/7 via phone or text Discount vouchers for days out and restaurants, eye test and glasses vouchers, cycle to work scheme, free flu jabs At Assystem, we celebrate diversity and creativity. We believe in harnessing unique perspectives to shape innovative solutions. Your skills and daring spirit are what truly matter. Join us and help shape the future! My profile Degree in Manufacturing/Mechanical Engineering or related field. 3+ years in manufacturing engineering within the nuclear industry. ️ Strong knowledge of nuclear safety regulations. Excellent analytical and problem-solving skills. ️ Ability to design new processes and tools. Experience with Lean and Six Sigma. Due to the nature of the work, applicants must meet residency criteria for UK security clearance or already have SC level clearance. We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people's ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.

Our Vacancy Senior Project Planner Defence Permanent / Project Management Sunderland 15/10/23 On site Share Assystem is an international company with one mission: accelerate the energy transition around the world.Every day, our 6,500 switchers located in 12 countries (Europe, Middle East, Pacific Asia & Africa) connect their six thousand billion neurons to tackle the task of the century: switching to low-carbon energy.We are a collective committed to the actors who are making the energy switch. Sharing our knowledge, expertise and values allows us to innovate and think differently about the energy transition.Drawing on more than 55 years' experience in highly regulated sectors subject to strict security and safety requirements, we provide our customers with engineering and project management services, as well as digital services and solutions to optimize the performance of complex infrastructure projects throughout their life cycle. The Group is currently ranked second in the world for nuclear engineering.To ensure a viable, efficient, and reliable energy future for all. Job Description As the Assystem's Defence Infrastructure account continues to grow, we are looking to recruit a dynamic, self-motivated Project Planner / Senior Project Planner to support project delivery. Working alongside the Defence Infrastructure Project Manager(s), the Project Planner is the local point for all aspects of planning across the Defence Infrastructure portfolio. This role will be based at any of our Assystem offices with ad-hoc travel to client and other Assystem offices as required. Assystem are currently implementing our 'new normal' flexible working model, which will continue to support a mixture of home and office working across the business. Main Duties: Responsible for planning - production and management of project schedule(s), both internally and externally. Coordination of work packages to schedule, tracking progress vs schedule, resource planning, coordination of sub-contractors. Review and approval of sub-contractor programmes. Interface with the stakeholders to identify and report on progress, change, risks and opportunities. Input to proposals relating to manhour estimates and planning. Produce concise, accurate reports of project metrics including critical path analysis to the Defence Infrastructure Lead Team. Essential Skills and Behaviors Primavera P6 to intermediate level (essential) Strong skills in MS Office, especially Excel and Project Self-motivated and able to work to deadlines without direction/supervision Good communicator able to provide a clear, concise and accurate summary of project progress, risks to the critical path and metrics Able to confidently engage with sub-contractors and critically review the accuracy of sub-contractor submissions Attention to detail Qualifications: Degree preferred, or other equivalent qualification Primavera P6 training Project Management qualification (e.g. APM) would benefit Experience Experience as project planner on NEC4 Contracts is essential (particularly Option A and Option C) Major infrastructure design and build project background highly desirable Experience of working in the Nuclear or Defence Industry is highly desirableDue to the nature of this role the successful candidate will require Security clearance. To gain this they will be required to be a Sole UK national, Hybrid working from home/Assystem OfficeWe are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people's ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people's ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.

A leading engineering company is seeking a Senior Planner for a hybrid role based in Glasgow. You will be responsible for managing project schedules and coordinating with stakeholders to ensure timely execution. Ideal candidates will have experience with NEC4 contracts and a background in nuclear or defence industries. This position offers opportunities to work on global projects and promotes diversity. Applicants must meet residency criteria for UK security clearance.

A global engineering firm in Sunderland is seeking a Senior Project Planner to support project delivery in the Defence Infrastructure sector. This role involves production and management of project schedules, coordination with stakeholders, and requires experience with NEC4 Contracts. The ideal candidate has strong skills in Primavera P6, a background in major infrastructure projects, and is a Sole UK national. This position supports flexible working arrangements.

Assystem is an international company with one mission: accelerate the energy transition around the world. Every day, our 6,500 switchers located in 12 countries (Europe, Middle East, Pacific Asia & Africa) connect their six thousand billion neurons to tackle the task of the century: switching to low-carbon energy. We are a collective committed to the actors who are making the energy switch. Sharing our knowledge, expertise and values allows us to innovate and think differently about the energy transition. Drawing on more than 55 years' experience in highly regulated sectors subject to strict security and safety requirements, we provide our customers with engineering and project management services, as well as digital services and solutions to optimize the performance of complex infrastructure projects throughout their life cycle. The Group is currently ranked second in the world for nuclear engineering. To ensure a viable, efficient, and reliable energy future for all Job Description I Role To lead a team of discipline engineers in the delivery of a technical solution that satisfies the legal and functional requirements along with the associated performance conditions to the agreed time, cost and quality. II Responsibilities Solution development and delivery: 1. Develop and implement strategies for delivery of the discipline-related components of design, including use of the supply chain. 2. Deliver a safe, fit-for-purpose, fully integrated and operable design solution that meets product requirements, and includes appropriate validation and verification. 3. Manage the production of fit-for-purpose discipline-related design deliverables that define and preserve the design intent and are organised and align with the plant configuration, as appropriate. 4. Ensure the design solution is able to be manufactured, constructed, commissioned, handed over, put into operation, maintained and decommissioned, and that Life Time Records are delivered. 5. Ensure all discipline-related technical, safety and engineering risks are identified, owned and managed 6. Define and execute a discipline-specific risk based assurance strategy and call appropriate engineering or design reviews, with appropriate independence, in a timely manner. 7. Support the PEM in providing engineering design support to work scope definition throughout procurement, construction and commissioning project phases. 8. Develop and deliver work in line with the Project Delivery Fundamentals1 . Safe and Legal: 9. Support development of the hazard management strategies, safety case and associated implementation systems and provide pragmatic design substantiation. 10. Ensure solutions meet all discipline-related legal requirements including CDM, safety (including application of the EDSPs), security, environmental and site licence conditions, and that deliverables and solutions generated are adequately underpinned. 11. Ensure all team members are aware of, understand and appropriately apply relevant legislation, SL and project / area specific policies, procedures and design issues and this is tested through assurance and oversight. Requirements Management: 12. Coordinate discipline-related input to the derivation of requirements and capabilities for Areas, Systems and Products, along with the associated conditions, constraints and validation. 13. Coordinate discipline-related input to product verification planning and evaluation. Cost and Schedule: 14. Develop and update cost and time estimates for delivery of the discipline-related design solution. 15. Lead the development and control of the discipline-related elements of the project / task baseline scope, schedule and budget using the change control process. 16. Monitor, review and accurately report progress in terms of time and cost, and implement corrective actions and recovery strategies where required. 17. Manage personal / team budget and schedule to meet targets. Quality: 18. Contribute to the production of the quality planning environment e.g. quality strategy, quality plans etc. and ensure design solutions are delivered in accordance with this. 19. Identify appropriate design and engineering standards and practices to be used for delivery, including the use of Value Improving Practices, and apply them intelligently. 20. Adopt validation and verification practices for key aspects of work to ensure that the design meets all functional, safety and environmental requirements and is integrated with other design disciplines. People: 21. Form a functional team of sufficient competent (SQEP) people to deliver the functional design through all stages of the project / task lifecycle. Contribute to resource planning to engage and maintain resources necessary to deliver the specified work programme. 22. Deploy discipline-specific resources to work areas according to business needs, priorities and using the 'most appropriate person' principle. 23. Lead and manage discipline-specific design resources. 24. Ensure effective leadership is seen as a key attribute to all delivery activities. 25. Promote and incorporate good practice and the capture, sharing and utilisation of LFE across the specific team and the wider engineering business, including identifying and ensuring subject matter experts are appropriately and adequately engaged in a timely manner. 26. Develop individuals and self by coaching, mentoring or formal training and provide input to appraisals and performance reviews, including performance management as required. 27. Support mobility within the community by taking pragmatic decisions in how the team are deployed and being open to releasing individuals for the benefit of their personal development and / or the enterprise. III Accountabilities 1. Ensure control, delivery and reporting of fit for purpose, integrated design solutions that meet requirements including site licence, safety, time, cost, quality, environmental and legal. 2. Specification and intelligent deployment of appropriate and adequate design standards, procedures, policies, legislative and regulatory requirements, ensuring deliverables and solutions generated are safe, legal and adequately underpinned. 3. Ensure that appropriate design review activities are performed in a timely manner. 4. Ensure that documents define and preserve the design intent and are organised and align with the plant configuration and that the design solution can be deployed on the Sellafield site. 5. Approval of discipline-specific design deliverables. 6. Carry out work in line with the Project Delivery Fundamentals1 7. Ensure all design is carried out by competent (SQEP) people throughout the project / task lifecycle and supply chain. 8. The leadership, mentoring, training, health, safety, career development and performance management of direct reports. My profile Qualifications Understanding of SL Asset Management and Configuration Management processes and arrangements within Decommissioning Asset care and Project environments Minimum 7 years experience in delivering engineering and technical solutions within Sellafield, complying with all legislative, regulatory and company policy standards and procedures e.g. safety, quality, risk, security etc. Ability to work within a multi-disciplined team focusing on novel and diverse engineering challenges that have a potential to impact business performance. Security clearance This role requires the successful candidate to hold a minimum of a Security Check (SC) clearance without any caveats to that clearance. Warrington 3 days per week with ability to access site and the facilities. Work from home acceptable 2 days per week in line with general practice. We are committed to equal treatment of candidates and promote, as well as foster all forms of diversity within our company. We believe that bringing together people with different backgrounds and perspectives is essential for creating innovative and impactful solutions. Skills, talent, and our people's ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future. Are you a prospective or recent graduate? Assystem offers you the opportunity to join our Switch to Grow UK Graduate Scheme, where you'll gain hands on experience in engineering, digital services, and project management by working on some of the world's most critical energy projects. Be part of the challenge of the century; accelerating the switch to low carbon energy!

A leading engineering firm in Warrington is seeking a Senior Stress Engineer to join their dynamic team focusing on nuclear projects. The ideal candidate will have experience with Finite Element Analysis and be responsible for assessing nuclear components, ensuring compliance with key design codes. This role provides collaborative opportunities while also allowing for independent work, with a focus on quality delivery and innovation. Attractive benefits and hybrid work options are included.

A global engineering company in the UK seeks a Principal Structural Integrity Engineer to lead technical assessments and mentor junior engineers. The role demands expertise in Finite Element Analysis and a strong background in the nuclear sector. You will troubleshoot issues, conduct reviews, and represent the company in client meetings. Strong communication skills and a commitment to innovation are essential. Join us in the journey towards low-carbon energy solutions.

A leading engineering company is looking for a Principal Quality Engineer (Lead Auditor) to oversee Supply Chain audits. This on-site position in Bridgwater offers flexible working. Responsibilities include planning audits, engaging with teams, and ensuring compliance with ISO standards. Ideal candidates will have an IRCA Lead Auditor qualification, strong communication skills, and experience in controlled environments. Enjoy a benefit-rich package including 25 days annual leave, healthcare, and professional development incentives.