Mechanical Commissioning Engineer

Company Description

⚡️💡 About Assystem

Assystem is committed to accelerating the global energy transition. With 8000 Switchers across the globe, we combine deep-rooted engineering expertise with digital innovation to help build a sustainable energy future. In the UK, we play a vital role in landmark projects such as Hinkley Point C, Sizewell C, and the development of SMRs, supporting the safe and efficient delivery of nuclear power infrastructure.

🤝 Why Join the Community of Switchers?

You’ll be joining one of the top three nuclear engineering companies in the world. Our mission-led approach places you at the heart of the energy transition. At Assystem, you’ll collaborate with industry leaders, contribute to world-class nuclear projects, and gain exposure to some of the most ambitious engineering programmes on the planet.

Please note – we’re unable to offer visa sponsorship for this role, so applicants must have full right to work in the UK

Job Description

This is a full-time, site-based role at Hinkley Point C. We can only consider candidates within commutable distance of Bridgwater or those willing to relocate, with support available to assist the move.
You will support the commissioning of mechanical equipment and systems. The role combines hands-on testing with structured preparation activities.You will develop practical commissioning capability in a highly regulated environment.

🔩 Support commissioning activities for mechanical plant and equipment
🧪 Assist with execution of mechanical testing and functional checks
📋 Contribute to commissioning procedures and test documentation
🔍 Support fault identification and resolution during testing activities
🤝 Interface with construction, installation, and operations teams
📁 Assist with system handover evidence and readiness documentation
🦺 Apply strong safety behaviours during all site activities

Qualifications

Required Skills and Qualifications:

Though it would be great if you have experience in nuclear, it is by no means essential! If you have experience in a highly regulated environment, we want to hear from you. 

It is also important to know that its rare for the perfect candidate to exist. If you feel like you have 70% - 80% of the required skills, please don't hesitate in replying.

🎓 Degree in mechanical engineering or related discipline
⚙️ Understanding of mechanical systems and equipment
🏗️ Practical site-based engineering or operational experience
🧠 Logical, methodical approach to problem solving
📋 Experience in commissioning, testing, and equipment handover
🦺 Safety-focused mindset in industrial environments
🤝 Ability to work effectively within multi-disciplinary teams
📝 Clear written and verbal communication skills

Additional Information

🌟 This role offers a rare balance of mechanical design involvement and site-based delivery on one of the UK’s most important infrastructure projects. If you want your engineering decisions to directly influence safe construction and long-term plant performance, this position offers genuine technical impact and long-term career value.

Benefits include:
🕒 Flexible working hours
🛡️ Market Leading 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 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.