Project Manager – HV Systems

Project Manager – HV Systems | Snowdonia National Park
£70,000 – £80,000 (Negotiable, DOE) + Package | Permanent

Location: Snowdonia National Park (Eryri), North Wales


About the Role

TRIbuild Solutions are recruiting for an experienced Project Manager to join a major infrastructure scheme delivered on behalf of National Grid, based within the stunning Eryri National Park.

The project involves constructing a new cable tunnel beneath the estuary near Portmeirion, enabling the removal of 10 pylons and 3.4km of overhead line, and replacing them with 400kV cables routed through a tunnel deep underground – significantly enhancing the visual and environmental quality of this iconic landscape.

You will play a key role in delivering this landmark engineering project, from design through to construction and commissioning.

The Project Scope Includes:

  • A 3.4km tunnel, 3.5m in diameter, connecting two new shafts at Garth and Cilfor
  • Construction of two new headhouses, one at each shaft
  • A new sealing end compound, plus reconfiguration and extension of an existing sealing end compound
  • Installation of two high voltage (HV) electrical circuits
  • Circuit connections between the reconfigured Garth Sealing End Compound (SEC) and the new Cilfor SEC

Key Responsibilities

  • Manage and oversee HV systems delivery across all project phases, from design through construction and commissioning
  • Coordinate with multi-disciplinary design and construction teams, including tunnelling, M&E, and civils specialists
  • Liaise closely with National Grid and key delivery partners to ensure project milestones, quality standards, and safety requirements are met
  • Manage project constraints specific to working within a National Park environment, including environmental and planning considerations
  • Oversee programme, cost, and risk management across the HV electrical scope
  • Ensure compliance with relevant HV standards, regulations, and health & safety legislation
  • Report on progress, risks, and key decisions to senior stakeholders

About You

  • Proven experience as a Project Manager within HV transmission, substation, or major electrical infrastructure projects
  • Strong understanding of HV systems (400kV experience highly desirable)
  • Experience delivering large, complex civil/M&E infrastructure projects, ideally within utilities, energy, or National Grid frameworks
  • Familiarity with tunnelling or underground infrastructure projects advantageous
  • Excellent stakeholder management skills, with experience working alongside principal contractors and design consultants
  • Relevant qualifications (e.g., Engineering degree, PMP, APM, or equivalent) desirable
  • Full UK driving licence, with flexibility to be based on-site in Snowdonia

What’s on Offer

  • £70,000 – £80,000 basic salary, negotiable dependent on experience
  • Attractive benefits package
  • Opportunity to work on a landmark national infrastructure project
  • Based in one of the UK’s most beautiful National Parks
  • Long-term career development within a high-profile scheme

Interested?

If you’re a driven Project Manager looking to make a visible, lasting impact on the UK’s landscape and infrastructure, contact Leon at TRIbuild Solutions, or apply now to be part of this prestigious scheme.

Apply now

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At a glance

  • Job reference: BBBH9417_1783694252
  • Location: Porthmadog, Gwynedd
  • Job type: Full Time, Permanent
  • Job sector: Other
  • Salary: £70000.00 – £80000.00 per annum + – negotiable
  • Published: July 10, 2026