Principal Mechanical Design Engineer

Hays Banbridge, Armagh, Banbridge & Craigavon Posted apr 10, 2026

Contract
Onsite
Senior

Job description

This Principal Mechanical Design Engineer role is focused on leading the design and delivery of mechanical solutions for commercial decarbonisation projects. It would suit someone who can bring strong professional approach to the role.

Where ownership sits

Produce detailed mechanical designs including schematics, calculations, plant selections and project specifications. Hands‑on experience with heat pump technologies (including >1MW systems)Understanding of refrigerants, heat pump optimisation and system design.

What the role carries

Leading the design and delivery of mechanical solutions for commercial decarbonisation projects. Carry out site surveys, assessments and feasibility studies across the UK. Develop and validate BMS control strategies from initial design through to on‑site optimisation.

What helps the work land well

Strong professional approach.

What the role depends on

  • Experience in data centre applications (HTG & CHW systems).
  • Experience using IES, Hysopt or similar simulation software.
  • Experience with solar thermal, district heating or large‑scale energy networks.

Practical details

  • 30 days annual leave (increasing with service).
  • Full in‑house training and ongoing career development.
  • Free tea, coffee, hot chocolate and fruit daily.
  • Free annual health check.

Job details

  • Benefits mentioned: Pension, Holiday allowance, Training
Report this job
Report this job

Help us keep Jobs247 accurate, safe, and useful for job seekers.

Usually takes less than 20 seconds
We review reports to remove misleading, expired, or duplicate listings faster.
Career guide

Learn more about this role

Explore the matching JobPedia guide for deeper duties, skills, salary context, and career paths.

JobPedia role guide

What does a Design Engineer actually do?

Explore the real work behind the title, from day-to-day responsibilities to how the role works in practice for Design Engineer.

Keep exploring similar roles

Search for more Principal Mechanical Design Engineer jobs from Hays in Banbridge, Armagh, Banbridge & Craigavon.