Principal Project Manager (EPC Contracts) in Warrington

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.

We are currently seeking a Principal Project Manager (EPC Contracts) to join our embedded delivery team supporting projects. This role forms part of the integrated Construction Delivery function, operating within the Site Construction Directorate and working directly with a Principal Contractor.

• Manage and coordinate construction delivery across allocated areas.
• Act as the construction lead within a Multi-Disciplinary Team (MDT), reporting into a Construction Lead accountable for delivery.
• Oversee site activities including Construction Management, logistics, planning, safety, and quality performance.
• Ensure compliance with project procedures, regulatory requirements, and Principal Contractor duties.
• Provide leadership and line management for Construction Delivery Managers (CDMs), supporting their development and competency.
• Conduct safety and assurance inspections, ensuring alignment with Assystem’s safety tools and processes.
• Chair and contribute to daily/weekly delivery planning meetings (e.g. PLOWs), ensuring short-term work coordination supports long-term objectives.
• Drive site-wide integration of construction sequencing, recovery planning and resource strategy across your area.
• Represent the construction function in key forums and support consistent reporting to the client.

• Substantial experience delivering complex infrastructure or nuclear projects within regulated environments.
• Demonstrable understanding of NEC contracts and large‑scale programme delivery constraints.
• Skilled in leadership, coordination, reporting, and stakeholder management across multidisciplinary environments.
• Sound commercial awareness, especially regarding construction delivery and contract interface.
• Excellent verbal and written communication skills, with ability to generate clear and concise reports.

• Degree (or equivalent) in Civil Engineering, Construction Management, or related discipline.
• Understanding of the Construction (Design and Management) Regulations.
• NEBOSH, IOSH or SMSTS certification.
• Eligibility to work in the UK and obtain necessary site security clearances.

Whilst we encourage applications from all nationalities, Assystem within the UK are subject to security and export control restrictions due to the nature of work to be undertaken. These restrictions mean that factors including your nationality, any previous nationalities you have held, and/or your place of birth may limit those roles that you can perform for the organisation.

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.