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Senior Commissioning Engineer

Job Category:  Construction
Contract Partner Company:  Mactech Engineering & Inspection
Employing Company:  EDF HPC

The HPC Jobs Service supports local people into exciting, long-term careers across our Project.

Senior Commissioning Engineer
Mactech
Hinkley Point C


Job Purpose / Overview


The Commissioning Team is expanding in preparation for the commissioning of the first nuclear power station to be built in a generation.


As a company that foster an inclusive culture, valuing the unique strengths, perspectives, and experiences of all employees, we are seeking talent from diverse backgrounds and level of expertise.


The Senior Electrical Commissioning Engineer is responsible for leading, executing, and assuring commissioning activities for LV, HV, and EHV electrical systems. The role ensures that electrical systems are safely energised, validated against design intent, and demonstrated compliant with nuclear safety, environmental, and industrial standards. In doing so, the role supports the Commissioning Arrangements and contributes directly to fuel‑load readiness and system handover to operations


Principal Accountabilities


Plan and coordinate electrical commissioning activities by developing commissioning test plans, reviewing schedules, confirming resource and equipment availability, and ensuring the latest revisions of commissioning instructions are in use.
Execute and oversee the commissioning of LV, HV, and EHV electrical systems including switchboards, transformers, batteries, UPS, protection relays, interlocks, and EHV grid‑interface equipment up to 400 kV.
Apply and enforce nuclear, electrical, and industrial safety requirements, including pre‑job briefs, point‑of‑work risk assessments, and surveillance of safety rule compliance.
Implement configuration control by reviewing and validating redline mark‑ups, managing temporary modifications, and ensuring commissioning data is accurately captured in IT systems (e.g., EAM, Switch, CMS).
Analyse and verify electrical commissioning results, assessing compliance with acceptance criteria, identifying deviations, and engaging designers or vendors for technical resolution.
Manage governance activities including control of commissioning hold points, ensuring tests meet nuclear safety justification requirements, and providing traceable LC‑6 evidence packages.
Coordinate multi‑discipline interfaces by supporting mechanical, I&C, and process commissioning teams on systems containing electrical interactions or safety dependencies.
Lead system walkdowns and acceptance by verifying system completeness, reviewing handover documentation, closing punch‑list items, and confirming readiness for testing or energisation.
Capture, record, and communicate OPEX (operational experience) to support continuous improvement across commissioning activities.
Mentor and guide junior engineers and technicians, promoting nuclear professionalism and developing commissioning capability within the programme.


Knowledge, Skills, Qualifications & Experience


Knowledge & Skills


Essential


Degree in a relevant engineering discipline or equivalent 3 years' experience
Degree in Electrical Engineering or equivalent technical discipline.
Strong technical knowledge of HV/EHV/LV electrical distribution systems, grid‑interface equipment, protection, UPS, DC systems, and control systems.
Significant experience in commissioning within highly regulated sectors (nuclear, power generation, transmission, or oil & gas).
Demonstrated competence in protection relay testing, logic and interlock verification, and safe HV/EHV energisation planning.
Understanding of nuclear safety culture, regulatory expectations, and configuration management.
Ability to interpret complex electrical drawings (SLDs, wiring diagrams, logic diagrams).
Experience working under electrical safety rules, PTW, LOTO, and statutory regulations (HASAWA 1974, Electricity at Work Regulations 1989).
Strong communication, analytical, and problem‑solving skills.


Desirable


Experience with nuclear plant systems commissioning, operations, or maintenance.
Experience with EPR (NNB) electrical system architecture.
Chartered Engineer or working toward professional accreditation.
Experience in FAT oversight, supplier engagement, and specialist testing.


Technical Competencies


Expert understanding of HV/EHV/LV electrical systems, grid protection, and switching operations.
Competent in electrical testing technologies (relay test sets, insulation testing, secondary injection, logic verification).
Skilled in diagnosing complex power system faults during commissioning phases.
Strong ability to produce technical justifications, test reports, and commissioning evidence packages.
Familiarity with commissioning IT systems for configuration, defect management, and validation.
Effective project management and stakeholder communication are crucial for coordinating activities and delivering successful projects.
Continuous learning and collaboration with multidisciplinary teams ensure stays updated with advancements and meets client requirements.

 

For this role you must have evidence of right to work in the UK. As a project, we do not discriminate on the grounds of age, gender, race, colour, religion, disability or sexual orientation, and we welcome applications from all sections of the community.

The HPC Jobs Service supports local people into exciting, long-term careers across our Project.

Senior Commissioning Engineer
Mactech
Hinkley Point C


Job Purpose / Overview


The Commissioning Team is expanding in preparation for the commissioning of the first nuclear power station to be built in a generation.


As a company that foster an inclusive culture, valuing the unique strengths, perspectives, and experiences of all employees, we are seeking talent from diverse backgrounds and level of expertise.


The Senior Electrical Commissioning Engineer is responsible for leading, executing, and assuring commissioning activities for LV, HV, and EHV electrical systems. The role ensures that electrical systems are safely energised, validated against design intent, and demonstrated compliant with nuclear safety, environmental, and industrial standards. In doing so, the role supports the Commissioning Arrangements and contributes directly to fuel‑load readiness and system handover to operations


Principal Accountabilities


Plan and coordinate electrical commissioning activities by developing commissioning test plans, reviewing schedules, confirming resource and equipment availability, and ensuring the latest revisions of commissioning instructions are in use.
Execute and oversee the commissioning of LV, HV, and EHV electrical systems including switchboards, transformers, batteries, UPS, protection relays, interlocks, and EHV grid‑interface equipment up to 400 kV.
Apply and enforce nuclear, electrical, and industrial safety requirements, including pre‑job briefs, point‑of‑work risk assessments, and surveillance of safety rule compliance.
Implement configuration control by reviewing and validating redline mark‑ups, managing temporary modifications, and ensuring commissioning data is accurately captured in IT systems (e.g., EAM, Switch, CMS).
Analyse and verify electrical commissioning results, assessing compliance with acceptance criteria, identifying deviations, and engaging designers or vendors for technical resolution.
Manage governance activities including control of commissioning hold points, ensuring tests meet nuclear safety justification requirements, and providing traceable LC‑6 evidence packages.
Coordinate multi‑discipline interfaces by supporting mechanical, I&C, and process commissioning teams on systems containing electrical interactions or safety dependencies.
Lead system walkdowns and acceptance by verifying system completeness, reviewing handover documentation, closing punch‑list items, and confirming readiness for testing or energisation.
Capture, record, and communicate OPEX (operational experience) to support continuous improvement across commissioning activities.
Mentor and guide junior engineers and technicians, promoting nuclear professionalism and developing commissioning capability within the programme.


Knowledge, Skills, Qualifications & Experience


Knowledge & Skills


Essential


Degree in a relevant engineering discipline or equivalent 3 years' experience
Degree in Electrical Engineering or equivalent technical discipline.
Strong technical knowledge of HV/EHV/LV electrical distribution systems, grid‑interface equipment, protection, UPS, DC systems, and control systems.
Significant experience in commissioning within highly regulated sectors (nuclear, power generation, transmission, or oil & gas).
Demonstrated competence in protection relay testing, logic and interlock verification, and safe HV/EHV energisation planning.
Understanding of nuclear safety culture, regulatory expectations, and configuration management.
Ability to interpret complex electrical drawings (SLDs, wiring diagrams, logic diagrams).
Experience working under electrical safety rules, PTW, LOTO, and statutory regulations (HASAWA 1974, Electricity at Work Regulations 1989).
Strong communication, analytical, and problem‑solving skills.


Desirable


Experience with nuclear plant systems commissioning, operations, or maintenance.
Experience with EPR (NNB) electrical system architecture.
Chartered Engineer or working toward professional accreditation.
Experience in FAT oversight, supplier engagement, and specialist testing.


Technical Competencies


Expert understanding of HV/EHV/LV electrical systems, grid protection, and switching operations.
Competent in electrical testing technologies (relay test sets, insulation testing, secondary injection, logic verification).
Skilled in diagnosing complex power system faults during commissioning phases.
Strong ability to produce technical justifications, test reports, and commissioning evidence packages.
Familiarity with commissioning IT systems for configuration, defect management, and validation.
Effective project management and stakeholder communication are crucial for coordinating activities and delivering successful projects.
Continuous learning and collaboration with multidisciplinary teams ensure stays updated with advancements and meets client requirements.

 

For this role you must have evidence of right to work in the UK. As a project, we do not discriminate on the grounds of age, gender, race, colour, religion, disability or sexual orientation, and we welcome applications from all sections of the community.

Why Join Us?

For more than 60 years, nuclear power stations in the UK have been quietly keeping Britain fuelled with massive amounts of home-grown energy.

Our teams up and down the country are proudly continuing to serve the nation – but they also have an eye on the future.

EDF is leading the UK's nuclear renaissance with the construction of a new nuclear power station at Hinkley Point C and plans for a new power station at Sizewell C in Suffolk.

Nuclear power is the most reliable, low-carbon energy source currently available to the UK. EDF is playing a key role in the development of nuclear sites, while Hinkley Point C will provide low-carbon electricity to meet 7% of the UK demand. The project is already making a positive impact on the local and national economy as well as boosting skills and education.

We’re not just building new nuclear power stations. We’re developing careers, upskilling generations and creating thousands of employment and apprenticeship opportunities across a variety of skills areas.

It takes a special kind of person to work in the nuclear energy industry and although we have thousands of them there’s always a need for more.

Our industry has a mind-boggling range of opportunities and more jobs, and in more places, than you might think. But it’s also an industry which is changing.

We’re a responsible business and proud to be Britain’s biggest generator of zero carbon electricity. With size, age and experience, we believe we can do even more.

Apply now »