Project Systems Engineer in Olney

Company Description: Today, Assystem is among the top three independent nuclear engineering firms worldwide. With over 60 years of experience in highly regulated sectors, the group supports public and industrial stakeholders in the execution of complex and strategic infrastructure projects, subject to high safety and security requirements. Assystem mobilizes 8,000 experts in 13 countries and intervenes across the entire project lifecycle, in engineering, project management and digital solutions.

The Project Systems Engineer (PSE) plays a pivotal role in leading and coordinating systems engineering activities, ensuring the overall technical solution is integrated, coherent, and fully aligned with project requirements.

• Lead and coordinate project-wide systems engineering activities to deliver safe, effective, and integrated engineering solutions.
• Define, manage, and control project-level requirements, ensuring full traceability throughout the project lifecycle.
• Ensure engineering outputs from multiple disciplines are successfully integrated into a viable, compliant, and deliverable system solution.
• Provide technical leadership across multidisciplinary teams, driving collaboration and engineering excellence.
• Support structured decision-making, balancing technical, safety, programme, and project requirements.
• Ensure engineering scope is clearly defined, controlled, verified, and validated from concept through to delivery.
• Champion a robust systems engineering approach, ensuring all solutions meet quality, safety, regulatory, and customer requirements.

• Degree or equivalent qualification in an engineering discipline.
• Membership of a relevant professional engineering institution.
• Chartered Engineer (CEng) status or demonstrable route toward chartership (desirable depending on project needs).

• Significant experience in an engineering design environment where systems thinking and integration are key attributes.
• Demonstrable experience leading multi-disciplinary engineering coordination activities.
• Experience defining, capturing, and managing project-level requirements, including functional and derived requirements.
• Experience facilitating structured requirements and value management workshops.
• Experience ensuring traceability between requirements, design outputs, and verification strategy.
• Experience supporting technical optioneering and structured decision-making processes.
• Experience identifying and managing cross-discipline technical risks and interface risks.
• Experience developing and maintaining systems-level documentation (e.g., requirement specifications, system architectures, interface control documents).
• Experience working within regulated or safety-critical environments.
• Strong stakeholder management capability and ability to build technical consensus.

• Systems Engineering accreditation (e.g., INCOSE ASEP/CSEP or equivalent).
• Formal training in requirements management and verification & validation methodologies.
• Postgraduate qualification in systems engineering or a related discipline (advantageous).

• Experience operating in a nuclear or highly regulated environment.
• Experience across multiple lifecycle phases (Appraise, Define, Deliver).
• Experience supporting hazard identification and ensuring hazards are appropriately addressed within system design.
• Experience defining verification and validation strategies proportionate to risk and lifecycle phase.
• Familiarity with Sellafield governance processes and gated lifecycle.
• Experience working with systems engineering methodologies and tools.

This role requires the successful candidate to hold a minimum of a Security Check (SC) clearance without any caveats to that clearance. Due to the nature of work this role will be delivering and for the protection of certain assets, the successful candidate has to be a UK national or in MoD approved cases a Dual National from a non-ITAR country.

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.

NOTICE TO CANDIDATES ON RECRUITMENT FRAUD - We are committed to safeguarding candidates from fraudulent activity associated with our recruitment process. Please note that we will never offer specialist CV writing services, request payment or ask for sensitive personal information during the recruitment process.