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.
Your Mission:
π The Opportunity
We are seeking an experienced and motivated Acceptance Manager to lead the planning, development, and execution of acceptance strategies for a major defence infrastructure programme.
Working closely with commissioning teams and a wide range of project stakeholders, you will play a critical role in ensuring successful transition from concept design through construction, commissioning, handover, and sustainable operational use.
This is a unique opportunity to shape acceptance strategy from the earliest design stages while supporting one of the UKβs most complex and highly regulated programmes.
π§ Key Responsibilities
π Acceptance & Readiness Strategy
ποΈ Design & Engineering Collaboration
π Programme Delivery & Governance
π Technical Documentation
π€ Stakeholder & Procurement Support
Candidate Profile
We are looking for a proactive and experienced professional with a strong background in complex engineering, infrastructure, or highly regulated environments.
β Essential Experience & Skills
β Desirable Experience
π Why Join Us?
β¨ Be part of dynamic construction and engineering projects
β¨ Work in a collaborative and professional environment
β¨ Develop your skills within a structured and well-supported team
Please be aware that many roles at Assystem are subject to both security and export control restrictions.
We will consider Inside IR35 Contractors or permanent staff.
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 peopleβs 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.
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 peopleβs ability to dare are the only things that matter !. Bring your unique contributions and help us shape the future.

Assystem, one of the world's leading independent nuclear engineering companies, is committed to accelerating the energy transition. We see ourselves as an activist in the development of nuclear energy, convinced that it is an essential part of the fight against climate change.
8,000 switchers, spread in 13 countries in Europe, Asia, Africa and the Middle East are working every day to make the energy switch by accelerating the development of nuclear and renewable energies, power grids, clean hydrogen projects and low-carbon transport.
We design and supervise major projects through our engineering activities and accelerate our customers' digital transformation. We also develop new solutions to build faster and improve the performance of complex infrastructures.
59 years of experience have made Assystem a key partner of the world's largest industrial groups: CEA, EDF, ENEC, Enedis, Engie, Framatome, ITER, K.A. CARE, Naval Group, NICDC, Orano, RATP, Rolls Royce, Royal Commission, Sellafield, SNCF...
Assystem is ranked in the Top 3 companies in the nuclear energy sector.