Mechanical Commissioning Engineer
2026-09-29T00:00:00
Location: East Midlands, GB, NG32 3JE
Any
Application Deadline: 2026-12-28T19:00:31.953
ASYS 46,55 EURMechanical Commissioning EngineerOur Vacancy# Mechanical Commissioning Engineer
- Defence Contracting / Derby United Kingdom 04/02/26 On site Share
About Us
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 optimize the performance of complex infrastructure projects throughout their life cycle. The Group is currently ranked second in the world for nuclear engineering to ensure a viable, efficient, and reliable energy future for all.
Job Description
Your future team
You will be joining a dynamic and collaborative commissioning team on-site at our Client in Derby, which is a Nuclear Licensed Site. This is an exciting opportunity for a contractor looking to contribute to a critical project and work within an embedded team. This role will be based in Derby and will initially be working a 2-shift pattern Monday to Friday. There is a high possibility that it will increase to a 3-shift pattern from February 2026.
Your Missions
- Author and manage commissioning test procedures and prepare safe systems of work
- Maintain accurate records of test results
- Conduct commissioning tests and analyse results
- Communicate effectively and manage processes
- Carry out commissioning duties on systems such as nuclear, conventional, and environmental safety systems, wastewater tanks, nuclear-qualified cranes
Assystem has over 55 years of experience in nuclear engineering. We are among the top 3 largest nuclear engineering companies.
Collaborative Environment
Join a dynamic team of experts who are passionate about driving progress and supporting each other's growth.
My Profile
PROFILE
Your strengths and prerequisites for success:
- Experienced with commissioning gas, fluid, and vacuum systems and mechanical handling equipment
- Familiar with Licence Condition 21 site arrangements, health and safety standards, permits, and safety case adherence
- Able to perform initial operator duties during commissioning testing phases (i.e., non-active commissioning)
- Previous experience of witnessing, supervision, and acceptance of vendor and supplier testing on-site
- Skilled in authoring test procedures and reports
- Understanding of design, construction, and handover processes
Please be aware that many roles at Assystem are subject to security and export control restrictions. These restrictions mean that factors such as your nationality, any nationalities you may have previously held, and your place of birth can restrict the roles you are eligible to perform within the organisation.
All applicants must at minimum achieve the Baseline Personnel Security Standard. Many roles also require higher levels of National Security Vetting, where applicants typically must have 5 to 10 years of continuous residency in the UK depending on the vetting level required for the role, to allow for meaningful security vetting checks.
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.
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Mechanical Commissioning Engineer in Brandon employer: Assystem UK Ltd
Assystem is an exceptional employer, offering a dynamic work environment where innovation thrives, particularly in the Defence Infrastructure sector. With a competitive benefits package that includes generous annual leave, robust pension contributions, and comprehensive health support, employees are empowered to achieve a healthy work-life balance. The company's commitment to flexible working arrangements, alongside opportunities for professional growth and development, makes it an attractive choice for those seeking meaningful and rewarding careers in a leading nuclear engineering firm.
