Principal Civil Engineer

Assystem is an international company with one mission: accelerate the energy transition around the world. Every day, our 6,500 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 optimise the performance of complex infrastructure projects throughout their life cycle.

The Group is currently ranked third in the world for nuclear engineering. To ensure a viable, efficient, and reliable energy future for all.

Project Lead Engineer

This role focuses on technical leadership and assurance
, ensuring engineering designs and construction activities meet required standards for both onshore and marine systems
.

You’ll lead engineering delivery, ensuring projects are safe, compliant, and aligned with stakeholder and operational requirements
.

• Lead multi-disciplinary engineering work packages
• Guide and support Project Engineers
• Deputise for the Engineering Manager when needed
• Work with Project Managers, consultants, and contractors
• Develop scopes of work and define requirements

• Review and approve designs, drawings, and documentation
• Oversee commissioning/decommissioning activities
• Ensure compliance with Health, Safety, Environment & Quality (HSEQ)
• Liaise with stakeholders throughout the project lifecycle
• Represent the organisation in meetings and presentations
• Work closely with BIM/CAD teams
• Attend site in Helensburgh to build strong working relationships
• Support training and knowledge sharing
• Assist with project close‑out activities

You’ll act as the technical leader driving engineering quality and delivery
, ensuring projects are well‑designed, compliant, and successfully executed from concept to completion
.

• Degree in Civil/Structural Engineering (or related field)
• Steel structures
• Reinforced concrete structures
• Knowledge of British Standards & Eurocodes
• Understanding of UK nuclear regulations & best practice
• Experience across the full engineering lifecycle:
  • Concept design
  • Detailed design
  • Construction
• Background in heavy industrial and/or maritime structures
• Experience in the UK nuclear sector (energy or defence), especially:
  • Safety‑related structures, systems & components
• Site integration in regulated environments
• Ability to work independently and within teams
• Strong understanding of compliance in regulated industries
• Experience writing & reviewing technical documents (reports, calculations, drawings, specs)
• Skilled in stakeholder communication & coordination
• Basic health & safety training for site work
• Chartered Engineer status (MICE / MIStruct
  
  E)
• Nuclear safety cases
• Safety committees / authorisation groups

They’re looking for a technically strong civil/structural engineer with nuclear experience who can lead complex projects, ensure compliance, and deliver safe, high‑quality engineering solutions
.

SC Clearance to start

Sole UK nationals only

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.