Company Description

• ️ About Assystem

Assystem is a global leader in engineering, dedicated to accelerating the energy transition. In the UK, we’re powering progress on landmark projects like Hinkley Point C, Sizewell C, and next-generation Small Modular Reactors (SMRs). Our 7,500+ Switchers blend deep engineering know-how with cutting-edge digital tools to help build a low-carbon world—faster, cleaner, and smarter.
Why Join the Community of Switchers?
Becoming a Switcher means joining one of the top three nuclear engineering companies in the world. You’ll work on technically complex projects that shape the UK’s energy future while gaining opportunities to grow your expertise in a fast-paced, collaborative environment.
Job Description

ESSENTIAL SKILLS AND QUALIFICATIONS

• Mechanical degree or significant HVAC systems experience
• Experience on major construction projects in highly regulated sectors
• Proven track record operating at Engineer or Senior Engineer level
• Proficiency in Navisworks and strong Excel capability
• Strong organisation and problem-solving skills
• Ability to manage configuration documentation effectively

✔️ Desired Skills

• Nuclear sector experience
• Familiarity with configuration management systems
• Knowledge of construction scheduling principles
• Experience in coordinating multi-discipline project teams

Additional Information
Ready to lead the way on one of the UK’s biggest clean energy builds?
Join a team where your skills will help power the future. Bring your mechanical expertise—and we’ll provide the platform to make your mark.

• Prepare and deliver HVAC construction work packs, ensuring clarity and compliance with standards
• Define and manage boundaries of scope for allocated works and documentation
• Liaise with subject matter experts, contractors, and client counterparts to resolve queries
• Review, update, and prioritise documentation to meet project deadlines
• Ensure deliverables achieve >90% first-time acceptance rate through quality reviews
• Contribute to planning and scheduling activities, providing feedback on resources and timelines
• Identify constructability issues and coordinate surveys or temporary works solutions
• Drive coordination across mechanical, electrical, and civil interfaces for seamless delivery
• Support improvement initiatives to streamline processes and enhance project efficiency
• Provide leadership within the pre-construction team and deputise for the Pre-Construction PM where require