Substation Mechanical Supervisor

Mint Selection | B Corp; Exeter; On-site; GBP 60,000 - 90,000; Full time

Job summary

Mint Selection are partnered with a leading energy organisation to recruit an experienced Substation Mechanical Supervisor for Exeter. The role focuses on supervising the mechanical installation of 400kV substation equipment and related infrastructure on a long-term contract.

You will oversee HV equipment installation, coordinate with electrical and civil teams, and ensure compliance with RAMS, ITPs and project standards through construction, installation and commissioning phases.

Qualifications

• Proven experience as Mechanical Supervisor, Substation Supervisor or Installation Supervisor on HV substations.
• Minimum 5 years' relevant substation experience, 10+ years desirable.
• Strong experience delivering transmission-level substations, ideally at 400kV.
• Experience with National Grid (NGET) and/or SPEN sites is desirable.
• Hands-on with installation and assembly of HV substation equipment.
• Experience with GE / GE Vernova equipment advantageous.
• Strong understanding of GIS/AIS equipment installation, alignment, and QA/QC.
• Solid RAMS, permit-to-work systems and safe systems of work.

Responsibilities

• Supervise mechanical installation activities across the 400kV package, ensuring safety and programme adherence.
• Oversee installation of HV substation equipment: switchgear, transformers, busbars and structures.
• Supervise GIS/AIS installation per drawings and specs.
• Coordinate mechanical subcontractors and installation teams; provide technical support.
• Ensure works comply with drawings, ITPs, RAMS and standards.
• Own QA/QC activities: inspections, punch lists, non-conformances close-out.
• Monitor progress and address delays, clashes and quality concerns.
• Coordinate interfaces with electrical, civil and commissioning teams.
• Conduct toolbox talks, site briefings and inspections promoting HSEQ culture.
• Maintain records and progress reports; support planning and reporting.
• Assist with testing, commissioning and handover toward energisation.

Skills

Leadership

Communication

Organisational skills

HSE awareness

RAMS

QA/QC

Job description

Mint Selection are partnered with a leading organisation within the energy sector to recruit an experienced Substation Mechanical Supervisor for a project based in Exeter.

The role will be focused specifically on the 400kV substation package, taking responsibility for supervising the mechanical installation of high-voltage substation equipment and associated infrastructure.

This is an excellent opportunity to join a major energy infrastructure project on a long-term contract, working within an experienced project delivery team through the construction, installation and commissioning phases.

Key Responsibilities

• Supervise and coordinate mechanical installation activities across the 400kV substation package, ensuring works are completed safely, efficiently and in accordance with the project programme.
• Oversee the installation and assembly of HV substation equipment including switchgear, transformers, busbars, support structures and associated mechanical infrastructure.
• Supervise the mechanical installation of GIS/AIS equipment and ensure all works are completed in accordance with manufacturer requirements, approved drawings and project specifications.
• Coordinate mechanical subcontractors and installation teams, providing technical support and resolving site issues as required.
• Ensure installation works comply with approved drawings, specifications, ITPs, RAMS, manufacturer instructions and relevant transmission standards.
• Take ownership of mechanical QA/QC activities including inspections, quality walk-downs, ITP compliance, punch listing, snagging and management of non-conformances through to close-out.
• Monitor workmanship and construction progress, identifying potential delays, installation issues, design clashes or quality concerns and implementing corrective actions where required.
• Coordinate closely with electrical, civil and commissioning teams to ensure interfaces between packages are effectively managed.
• Conduct toolbox talks, daily briefings and site inspections while promoting a strong health, safety, environmental and quality culture.
• Ensure works are carried out in accordance with RAMS, permit-to-work systems, project HSEQ procedures and applicable National Grid requirements.
• Maintain accurate site records, inspection documentation, progress reports and quality documentation throughout construction.
• Support short-term planning, contractor coordination meetings, programme updates and reporting to the Construction/Site Manager.
• Assist with inspection, testing, commissioning and handover activities as the project progresses towards energisation.

Experience Required

• Proven experience as a Mechanical Supervisor, Substation Supervisor or Installation Supervisor on high-voltage substation projects.
• Minimum 5 years' relevant substation experience, with 10+ years highly desirable.
• Strong experience delivering transmission-level substations, ideally at 400kV.
• Previous experience working on National Grid (NGET) and/or SPEN sites is highly desirable.
• Hands-on background in the installation and assembly of HV substation equipment including switchgear, transformers and associated mechanical infrastructure.
• Previous experience with GE / GE Vernova equipment would be highly advantageous.
• Strong understanding of GIS/AIS equipment installation, mechanical assembly, alignment, inspection and quality requirements.
• Good QA/QC knowledge including ITPs, inspections, NCRs, snagging, quality records and handover documentation.
• Strong understanding of RAMS, permit-to-work systems and safe systems of work within high-voltage environments.
• NGET Competent Person / NSI 6 & NSI 8 certification is desirable but not essential.
• Excellent leadership, communication and organisational skills with the ability to effectively manage installation teams and subcontractors.