Job Description

Senior HV Commissioning Engineer - Long-Term Contract Opportunity ⚡

Looking for your next challenge in the power sector?

We're supporting a major programme of transmission infrastructure works across Scotland and are looking for an experienced HV Commissioning Engineer to play a key role in the delivery of critical substation projects. This is an outstanding opportunity to secure a long-term contract with excellent earning potential and the chance to work on some of the UK's most significant grid and energy projects.

📍 Central Belt, Scotland

📅 12-Month Initial Contract + Annual Extensions

🚀 Immediate / ASAP Start Available

💰 £600-£750 per day (Outside IR35, All-In)

⏰ Monday-Friday Working Pattern (10-hour days, early finish Fridays) + potential weekend work

The Opportunity

As a key member of the commissioning team, you'll take ownership of HV and EHV substation commissioning activities, ensuring critical infrastructure is tested, energised, and handed over safely and efficiently.

Key Responsibilities

⚡ Lead and deliver commissioning activities on HV/EHV substations and associated systems across major transmission projects.

⚡ Develop and implement commissioning plans, procedures, switching schedules, and test documentation.

⚡ Perform functional testing, fault-finding, and verification of protection, control, and SCADA systems.

⚡ Work closely with project, design, and construction teams to ensure successful project delivery and programme milestones are achieved.

⚡ Produce commissioning reports, test records, and final handover documentation.

⚡ Support energisation activities and ensure systems are brought online safely, compliantly, and on schedule.

⚡ Ensure all activities are carried out in accordance with SSEN and SPEN safety rules, procedures, and industry best practice.

What We're Looking For

✅ Current SSEN or SPEN Authorisation.

✅ Proven experience commissioning HV/EHV substations (132kV-400kV).

✅ Strong technical knowledge of protection relays, control systems, SCADA, and substation automation.

✅ Experience working under UK DNO, TO, or TSO safety rules.

✅ Ability to manage multiple commissioning packages and work autonomously on site.

✅ Strong communication skills with a proven ability to engage with stakeholders at all project levels.

Why Apply?

🔹 Long-term project pipeline with annual extension potential.

🔹 Excellent day rates and Outside IR35 engagement.

🔹 Opportunity to work on nationally significant transmission and renewable energy infrastructure projects.

🔹 Immediate start available for the right candidate.

If you're an experienced HV Commissioning Engineer ready for your next contract, get in touch with Alex at JAM today to discuss the opportunity further