Job DescriptionCompany 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- 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

The Job Mission
This role is a mix of site and office-based work in Bridgwater, and relocation support is available if required. You'll be central to preparing and delivering HVAC construction work packs, enabling installation activities to progress safely and on schedule. Your future team will rely on your technical leadership to keep documentation aligned, interfaces managed, and construction readiness achieved.

Key responsibilities include:

• 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 required

Qualifications

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.

Benefits include:
Hybrid Working Opportunity
Flexible working hours
Pension scheme (8% company contribution / 4% personal contribution)
25 days' paid annual leave + bank holidays + option to buy or sell days
Professional fees reimbursed
Employee referral scheme
Competitive Sick Pay - Support when you need it
Income Protection & 3x Salary Death-in-Service Cover
Free Digital Gym Access - Expert-led fitness classes
24/7 Employee Support Line - Mental health, financial & legal help

We are committed to equal treatment of candidates and promote, as well as foster all forms of 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.