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.
Project Manager – Warrington (Permanent or Contract (Inside IR35)
Your future team
Assystem is a well-established leader in the nuclear decommissioning sector. Join our team as Project Manager within our Nuclear Decommissioning Business Unit. You will be supported by an engineering and project controls team and will be responsible for delivering assigned packages of work which vary in complexity.
Your Missions:
📝 Delivery of assigned packages of work as per contract conditions (NEC3 or other)
💰 Cost and schedule performance of assigned work packages
⚠️ Risk management
🔧 Project setup, SQEP assessment, project governance, project close-out
Why join the community of Switchers?:
🛠️ Expertise: With over 55 years in nuclear engineering, we are among the top 3 largest nuclear engineering companies.
🎁 Benefits: Enjoy attractive social benefits, an engaging Employee Committee (CE), and holiday bonuses.
📚 Career Growth: Benefit from ongoing training and numerous career opportunities; 70% of our managers are promoted internally!
🏡 Work-Life Balance: Enjoy 1 to 2 days of remote work per week.
Essential Skills and Experience:
🔧 Engineering design and construction experience preferred.
📜 NEC4 PSC Experience
📅 Full project lifecycle experience from business case approval, design, execution, handover
📝 Experience of contract management and change control
⚠️ Experience of risk management
🎓 BSc/BEng in a related engineering/construction/project management discipline
🎯 Association for Project Management Registered Project Professional
Desirable Skills & Experience
🏅 NEC4 Accredited Project Manager
🎖️ Project Management Chartership
🌍 Site development, consenting, and permitting experience
💻 CEMAR experience
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.
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.

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.