Mechanical Commissioning Technician

Company: TieTalent
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Overview


Mechanical Commissioning Technician role at TieTalent. Location: Cumbria. Contract: 4 months (likely extension thereafter). Rate: Negotiable (DOE). Sector: Nuclear Decommissioning & Clean Energy.


A nationally significant environmental engineering programme is seeking a Mechanical Commissioning Technician to join the team delivering one of the UK’s most complex and important infrastructure projects. This long-term decommissioning initiative will ensure the safe processing and storage of legacy materials, supporting environmental protection for decades to come.


Working closely with the Commissioning Engineer, you will play a hands-on role in preparing, testing, and bringing mechanical systems into operation. This includes process systems, vessels, pumps, and associated plant equipment.



Key Responsibilities



  • Maintain safety as the highest priority, following nuclear, radiological, conventional, and environmental safety procedures.

  • Carry out mechanical commissioning and testing activities across all project stages.

  • Support the preparation of commissioning test documentation.

  • Assist in implementing and tracking First-Off Builds (FOBs) and Technical Queries (TQs).

  • Perform testing activities for third-party witnessing.

  • Apply and remove Temporary Commissioning Aids as required.

  • Record commissioning data in line with project requirements.

  • Use completions management systems to track commissioning progress and handovers.

  • Collaborate with multidisciplinary engineering teams and contribute to design reviews.



Skills & Experience Required



  • Time-served or equivalent qualification in a mechanical discipline (e.g., piping, process equipment, or similar).

  • ONC or equivalent (or working towards qualification).

  • Proven experience in project commissioning within mechanical systems.

  • IOSH Working Safely (or equivalent).

  • Relevant trade card.

  • Proficiency with Microsoft Office Suite.

  • Ability to meet client security requirements (BPSS, P4 pass).



This role offers the chance to be part of a landmark UK infrastructure programme, applying your mechanical expertise in a challenging and rewarding environment.


If you are interested and keen to find out more, please apply now with your updated CV and reach out to Tom Johnson at Certain Advantage.

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Posted: June 4th, 2026