Site Supervisor (Mechanical)

Harmony is on a mission to be the best life safety partner to work with and for. Rated an ‘Outstanding Employer’ by Best Companies in 2025, we are only getting bigger and stronger — and we’re looking for A-players to help us get there.

We are one of the UK’s fastest-growing life safety contractors, delivering passive fire protection, building fabric, height safety and fire door services across residential, social housing, commercial and public sector buildings nationwide. We are growing rapidly across all divisions as demand for compliant, high-quality fire safety services continues to accelerate.

We are now looking for a Height Safety Supervisor to lead our height safety field teams, taking ownership of the quality, safety and delivery of planned and reactive height safety works across our client portfolio. You will be responsible for the day-to-day leadership of a team of Height Safety Engineers in the field — overseeing the planning and execution of inspections, installations and reactive works, and ensuring all activity is completed safely, compliantly and to the standard our clients expect.

You will act as the key point of escalation for your team on site, providing technical guidance, conducting quality checks and making sure method statements and risk assessments are followed correctly on every job. Working closely with the service admin and scheduling teams, you will help coordinate workloads, support the booking of remedial works and contribute to quoting and asset register updates where required. You will also play an active role in the development of your engineers, supporting their training and progression within the business. This is a field-based role requiring regular travel to client sites.