Commissioning Engineer - Mech (Morgan Sindall)

Position: Commissioning Engineer - Mech

Employer: Morgan Sindall Group (Morgan Sindall Infrastructure)

Reference ID: REQN0001121

Work Arrangement: ONSITE

Posted Date: 24/06/2026

Morgan Sindall Infrastructure delivers high-quality complex civil engineering and infrastructure projects across the UK. With frameworks and major schemes spanning nuclear decommissioning at Sellafield, National Grid energy transmission networks, major highways enhancements for National Highways, and high-speed rail programmes, Morgan Sindall provides an environment of innovation, engineering excellence, and long-term career development.

Morgan Sindall Infrastructure delivers some of the UK’s most complex and critical infrastructure across six core sectors. From working on projects and long-term frameworks, we believe in connecting people, places and communities through responsible infrastructure. Our people are our business. We leverage their expertise to design and deliver safe, resilient infrastructure through innovative solutions. Morgan Sindall Infrastructure is part of Morgan Sindall Group plc, a leading UK construction and regeneration group with revenue of over £3 billion.

As a Start Up Commissioning Engineer you will be aligned to the Start Up, Commissioning and Pre-Operations delivery team throughout the project lifecycle. You will identify and develop testing/ validation requirements and pre-operational work scope during the design phase, write documentation and execute activities in line with established Start up, Commissioning and Pre-Operations processes.

You will collaborate with an internal multidisciplined project delivery teams and interface with external stakeholders/vendors. You will utilise your experience in your specific engineering discipline to ensure that commissioning is executed to demonstrate the safe performance of the facility.

Safe delivery of Start Up, Commissioning, and Pre-Operations work scope through the project lifecycle at various locations as required.

Production of and contribution to Test and Pre-Operational Documentation.

Production of Plant Test Schedule, including knowledge of Requirements Management (able to interrogate Engineering Schedule, Verification & Validation requirements, interpret TRAM requirements, etc).

Attend and contribute to design reviews including developing the detail of temporary systems to enable commissioning.

Carry out testing/validation activities throughout all stages of project delivery.

Identification of faults and ability to propose and implement solutions through the Fault Observation Process (FOBs).

Witnessing of test/ validation activities.

Recording results and data in support of Start-up, Commissioning and Pre-operations activities.

Validation of working level instructions.

Application and removal of temporary Commissioning aids.

Development and delivery of asset care, preservation and maintenance to satisfy pre-operational, engineering and operational requirements.

Provide input into other project workstreams to ensure that start up, commissioning and pre-operational requirements are included and delivered i.e. Design, Safety Case, Procurement, Construction & Completions, Project Controls.

Ensure training and experience is maintained in order to hold relevant appointments where necessary for project delivery e.g. Commissioning Appointments, Electrical Appointments, Mechanical Appointments etc.

Provide work scope delivery progress as required by Start-Up, Commissioning and Pre-Operations reporting processes.

Essentials:

Recognised apprenticeship and/or ONC/Level 3 qualification in relevant discipline and able to present qualification certification.

Demonstration of successful delivery of work in an Engineering/technical role.

Willing and able to travel on extended stays to various locations other than Sellafield Site in West Cumbria, the wider UK.

Computer literate (MS applications including Word, Excel) with evidence of producing test documentation and reports.

Experience in fault finding within a technical, engineering or operational environment.

Desirables:

Experienced in Commissioning Engineer role.

HNC/Level 4 qualification in relevant discipline and able to present qualification certification.

IEng professional registration with Engineering Council.

Experience in producing Start Up, Commissioning and Pre-Operations documentation.

Generous, incremental holiday entitlement with the option to buy five days

Family friendly policies and work/life approach

Mentoring programmes and continuous learning support

Contributory pension scheme

Annual bonus scheme

Recognition scheme and long service awards

Car scheme and Private Medical Insurance

Click "Apply" to upload your CV, provide contact details, and answer a few role-specific questions. Once your application is reviewed, our Talent team will notify you of the outcome. If selected, you’ll be invited to either an in-person or virtual interview via Teams.

At Morgan Sindall, we are an equal opportunities employer and Investors in People company, committed to creating an inclusive and supportive workplace.

Morgan Sindall employs only those with the legal right to work in the UK. Proof of eligibility is required during the recruitment process.

Morgan Sindall Infrastructure has a commitment to sourcing candidates directly and as such we do not accept speculative CVs from agencies. Please note that any CVs submitted will be deemed as gifted to Morgan Sindall and any agency terms & conditions associated with the use of such CVs will be null and void.

Estimated Remuneration: GBP £45,000 - £65,000 per annum (competitive market rate commensurate with experience)

Direct Employer ATS Link: Apply directly via the official Morgan Sindall Recruitment Portal: [Commissioning Engineer - Mech on Morgan Sindall ATS](https://ce0970li.webitrent.com/ce0970li_webrecruitment/wrd/run/ETREC179GF.open?VACANCY_ID%3d541474CpYn%26WVID%3d088970AYAH)