Your new company I'm working with a leading organisation in the commercial decarbonisation and offsite‑prefabricated energy sector, who deliver innovative mechanical and electrical solutions across the UK, Ireland, and Europe. Due to continued growth, they are seeking a Principal Mechanical Design Engineer to join their expanding design team at their modern Banbridge or Newtownabbey facility.
This is a superb opportunity for an experienced engineer to take ownership of complex mechanical design projects, contribute to industry‑leading low‑carbon solutions, and play a key role in shaping best practice within a highly skilled engineering team.
Your new role: In this senior role, you will lead mechanical design activities from concept through to commissioning, collaborating closely with fabrication, project management and commissioning teams to ensure seamless project delivery. You'll work across a broad portfolio of commercial decarbonisation projects, while also supporting junior engineers and helping drive continuous improvement in design processes.
* Lead the design and delivery of mechanical solutions for commercial decarbonisation projects
* Produce detailed mechanical designs including schematics, calculations, plant selections and project specifications
* Develop and validate BMS control strategies from initial design through to on‑site optimisation
* Carry out site surveys, assessments and feasibility studies across the UK
* Work closely with fabrication teams to ensure designs translate accurately into manufactured solutions
* Support commissioning activities, including BMS proofing and optimisation
* Ensure all work meets health & safety, quality and regulatory requirements
* Attend internal and external design meetings; liaise professionally with clients, suppliers and contractors
* Mentor junior engineers and contribute to knowledge sharing and team development
What you'll need to succeed
* Degree in Mechanical Engineering, Building Services Engineering, or related discipline
* Chartered Engineer status (CIBSE or equivalent)
* Minimum 5 years' experience in a similar mechanical design role
* Strong experience with LTHW, MTHW and steam heating systems
* Solid understanding of UK & European design standards and legislation
* Confident communicator with strong organisational and problem‑solving skills
* Ability to manage your own workload while contributing to wider team objectives
* Experience with site surveys, energy assessments, audits and service coordination
* Fluency in written and spoken English
Desirable
* Proficiency with AutoCAD, Revit and BIM 360
* Experience using IES, Hysopt or similar simulation softwareKnowledge of decarbonisation strategies and energy‑efficiency measures
* Hands‑on experience with heat pump technologies (including >1MW systems)
* Understanding of refrigerants, heat pump optimisation and system design
* Experience with solar thermal, district heating or large‑scale energy networks
* Experience in data centre applications (HTG & CHW systems)
* BREEAM experience and building energy monitoring/verification
What you'll get in return
This is an excellent opportunity for a Principal Mechanical Design Engineer who wants to take the lead on cutting‑edge decarbonisation projects while working in a forward‑thinking, innovative environment. You'll have real influence, strong career progression and the chance to help shape the next generation of sustainable mechanical design.
Benefits
* Highly attractive salary
* Full in‑house training and ongoing career development
* Competitive pension scheme
* Life assurance
* Health cash plan
* Free annual health check
* 30 days annual leave (increasing with service)
* Regular social and wellbeing events
* Free onsite parking
* Free tea, coffee, hot chocolate and fruit daily
* Modern, supportive working environment
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