Project Systems Engineer

Assystem is an international company with one mission: accelerate the energy transition around the world.

Every day, our 8,000 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

Assystem Energy & Infrastructure are recruiting for a Project Systems Engineer

The Project System Engineer (PSE) leads and coordinates the systems engineering activities within a project to ensure that the overall technical solution is coherent, integrated, and aligned to defined requirements.

Responsibilities, Accountabilities and Authorities (R2A2) for Project System Engineer (ED20), the PSE is responsible for defining, managing, and controlling project-level requirements and ensuring that engineering outputs across disciplines integrate to form a viable, safe, and deliverable system solution.

The PSE provides technical leadership across disciplines, supports structured decision-making, and ensures that engineering scope is defined, traceable, and verifiable throughout the project lifecycle.

🎓 Essential Qualifications

🎓 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).

🛠️ Essential Experience

⚙️ 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.

📘 Desirable Qualifications

📜 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).

🚀 Desirable Experience

☢️ 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.

 **Security clearance**

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.

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.