Project Manager - Plant Integration in London

About Assystem

At Assystem, our mission is to accelerate the energy transition worldwide. Our 7,500 Switchers combine engineering excellence and project management expertise with advanced digital technologies to deliver complex low-carbon infrastructure. In the UK, we support landmark programmes including Hinkley Point C, Sizewell C and emerging Small Modular Reactor developments. We work at the centre of major nuclear new build projects, helping to deliver safe, efficient and future-ready energy solutions that power the UK’s transition to net zero.

You’ll be joining one of the three largest nuclear engineering companies in the world, recognised globally for technical capability and delivery excellence. Assystem provides the opportunity to work on nationally significant infrastructure while collaborating with high-performing engineering and commercial teams. Your future team operates at the heart of nuclear integration, influencing contract governance, plant integration strategy and digital delivery across major programmes.

The Job Mission

This Project Management opportunity which is a hybrid role, is based in Suffolk or Bristol, and we can only consider candidates within commuting distance or those willing to relocate, with relocation support available where required. You will manage NSA contract delivery for Plant Integration activities on a major nuclear project. You will ensure contractor outputs meet technical, commercial and governance requirements.

• Oversee delivery and performance of NSA Plant Integration services
• Manage Compensation Events and Variations with commercial stakeholders
• Act as gatekeeper for Task Orders and contract change requests
• Ensure contractor compliance with configuration and replication requirements
• Oversee 3D model strategy, updates and contractual obligations
• Monitor data and tools integration across engineering systems
• Coordinate timely review and acceptance of contractor deliverables
• Report on financial, technical and schedule performance metrics
• Build strong relationships with Engineering Integration and contractor leads

Essential Skills and Qualifications

• Degree in engineering or scientific discipline
• Minimum five years’ experience on major infrastructure projects
• Strong contract management and commercial awareness
• Experience within nuclear or highly regulated environments
• Ability to lead complex cross-functional technical discussions
• Skilled at resolving ambiguous technical and contractual issues
• Strong stakeholder engagement and communication skills
• Understanding of governance and technical assurance processes

Desired Skills and Qualifications

• PMI qualification or equivalent project management certification
• Familiarity with nuclear standards and EPR design principles
• Knowledge of configuration management and digital modelling tools
• Understanding of commercial delivery within large programmes
• Chartered status or working toward professional accreditation

Take the lead on one of the UK’s most significant nuclear programmes. Join Assystem and play a central role in managing complex plant integration contracts that shape the future of low-carbon energy. This is an opportunity to combine technical leadership with commercial influence, within a globally recognised nuclear engineering organisation.

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.

Benefits include:

• Hybrid Working Opportunity
• Flexible working hours
• Pension scheme (8% company contribution / 4% personal contribution)
• 25 days’ paid annual leave