HIU Senior Engineer


Company:	Vector Recruitment Solutions
Salary:	£40,000 - £50,000
Hours:	Full-time
Location:	Greater London, WC1X 0DG
Job type:	Permanent
Posting date:	14 Aug 2026
Closing date:	12 Sept 2026

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Summary

HIU Senior Engineer

Salary : £40,000 - £50,000 + Bonus & Electric Car Scheme (DOE)

Location : London & South UK

Permanent, Full Time

Due to hiring timescales, sponsorship is unavailable for this opportunity

Are you an experienced HIU specialist looking to join an innovative leader in low-carbon district energy and take the next step into a senior, mentoring role?

A Specialist Renewable Energy Consultancy is expanding its operations and seeking a dependable HIU Senior Engineer to cover London and the South of the UK. This is a pivotal role within a highly supportive operations team, offering the chance to maintain complex heat networks and play a direct role in major city-scale decarbonisation projects.

The Opportunity: You will play a vital role in ensuring the efficiency and reliability of low-carbon heat networks. Your day-to-day remit involves a blend of hands-on technical maintenance, fault-finding, and team development:

- Completing planned preventative maintenance (PPM) and reactive servicing of Heat Interface Units (HIUs) across various manufacturers.

- Diagnosing complex faults, executing first-time fixes, and conducting root-cause analysis to resolve operational issues.

- Managing site-based project works and assisting with 1-to-12 monthly mechanical PPM checks within commercial plant rooms.

- Participating in a structured on-call rota (1 week in 4) to execute emergency callouts and reinstate heat securely.

The Package

- Base salary of £40,000 - £50,000 (DOE) plus a discretionary performance bonus.

- 25 days annual leave + Bank Holidays (option to buy or sell up to 5 additional days).

- Access to an Electric Car lease scheme and Cycle to Work scheme.

- Private health care scheme, pension plan, and health and well-being support.

- Company laptop, tablet, and mobile phone provided, alongside continuous learning opportunities.

Technical Essentials To be successful, you must demonstrate high-level technical proficiency and a commitment to safe working practices:

- Mandatory: Minimum of 3 years’ direct experience working as an HIU Service Engineer.

- Compliance Expert: Part P and Part G certifications.

- System Knowledge: Strong working knowledge of heat network energy centres, plant rooms, and ability to read technical drawings (P&IDs).

- Safety: Competency in mechanical and electrical safe isolation.

- Mobility: Full UK Driving License held for a minimum of 12 months.