Senior Systems Engineer
Confirmed on the employer's own hiring board on Oct 26, 2026. First seen by Alion on May 12, 2026. Assystem scores B on the Alion truth index.
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.
Join the Fusion and Modular Nuclear Business Unit! In this role, you'll lead technical projects by managing engineering interfaces, ensuring cohesive design integration, and refining architectural frameworks. You'll liaise with stakeholders, handle requirements, and support early-stage activities like optioneering and design concept development, collaborating closely with a dynamic project management team.
Your mission:
- Coordinate the creation of critical artefacts such as operations concepts, functional and system architectures, requirement and compliance statements, and verification and validation planning.
- Conduct optioneering assessments and design risk assessments (safety and CDM) to ensure robust project planning.
- Support integrated technical management by navigating technical and project risks, refining design configurations, and developing breakdown structures.
- Respond promptly to technical queries, ensuring clarity and swift resolution.
- Liaise seamlessly with all disciplines to achieve unified design coordination.
- Apply cutting-edge systems engineering best practices to elevate team capabilities.
- Develop and propose innovative Model-Based Systems Engineering (MBSE) approaches for streamlined processes.
- Report progress on deliverables and provide strategic resource level recommendations to the Project Lead Engineer (Systems and Integration).
Why Join the Community of Switchers?
- 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.
- Coordinate the creation of critical artefacts such as operations concepts, functional and system architectures, requirement and compliance statements, and verification and validation planning.
- Conduct optioneering assessments and design risk assessments (safety and CDM) to ensure robust project planning.
- Support integrated technical management by navigating technical and project risks, refining design configurations, and developing breakdown structures.
- Respond promptly to technical queries, ensuring clarity and swift resolution.
- Liaise seamlessly with all disciplines to achieve unified design coordination.
- Apply cutting-edge systems engineering best practices to elevate team capabilities.
- Develop and propose innovative Model-Based Systems Engineering (MBSE) approaches for streamlined processes.
- Report progress on deliverables and provide strategic resource level recommendations to the Project Lead Engineer (Systems and Integration).
Due to the nature of the work, applicants must meet UK security clearance criteria.
Ready to make a difference in the nuclear engineering world? Join us and be a part of the future of nuclear and fusion innovation!
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.
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.