Principal Substantiation Engineer

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.

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

Your future team:

The Principal Substantiation Engineer will be embedded into our client’s team responsible for delivering updates to existing design substantiation dating back many years, as well as drawing together substantiation for the new infrastructure within a nuclear licensed site.

Your missions:
In this role, you’ll leverage your expertise to assist our client’s Design and Project Managers in delivering critical project scopes. You will:

🎯 Develop and update Design Substantiation Reports (DSR) by applying your technical knowledge and experience.

🎯 Analyse existing concrete structures to confirm their compliance with safety functional requirements.

🎯 Provide Subject Matter Expert advice on civil/structural engineering.

🎯 Collaborate with multidisciplinary design teams and liaise with the nuclear safety team to ensure robust solutions.

🎯 Uphold rigorous Quality Management standards in alignment with the Business Management System and Technical Manual.

🎯 Maintain accurate documentation and ensure strong configuration and quality controls throughout the process.

Why join the community of Switchers?

As one of the Top 3 Nuclear Engineering companies in the world, Assystem offer a competitive benefits package which includes:

💥25 days of annual leave + bank holidays

💥8% company pension contributions

💥Healthcare cash-plan to get money back on dental, medical, physical care

💥Employee assistance programme including 24/7 access to free mental health support, virtual gym classes and more

💥Get professional and industry membership fees paid for.

Qualifications/Skills to be successful:

💡 A degree (or equivalent) in civil or structural engineering.

💡 Chartered Engineer status (or significant relevant experience with eligibility for CEng registration).

💡 A proven track record in multidisciplinary engineering, with a core focus on safety and structural integrity.

💡 Expertise in modern analysis techniques for concrete nuclear structures, such as finite element analysis.

💡 Strong knowledge of UK laws and regulations governing Nuclear Licenced Sites and familiarity with international codes and standards for nuclear structure design.

💡 A deep understanding of nuclear safety case development and the designer’s role within it.

💡 Solid technical authorship skills, particularly in design substantiation and report development.

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.

Umbrella Contract or permanent role

Work from home or Assystem local office with occasional visits to Client site in Plymouth.

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.