Principal Mechanical Design Engineer

🔒 Confidential Employer
Posted 7 May 2026
LOCATION
Not specified
TYPE
Full-time
LEVEL
Mid-Senior level
SALARY
£70,000 / year
CATEGORY
Engineering
This employer holds a UK Home Office sponsor license — sponsorship for this specific role is at the employer’s discretion

SKILLS

Mechanical Design Building Services Design AutoCAD Revit BMS Control Systems Heat Pump Technologies Energy Efficiency Project Management

FULL DESCRIPTION

Principal Mechanical Design Engineer

Salary: £50-60K ~ £60-70k ~ £70k

Location: Northern Ireland (local NI offices)

Work Type: Hybrid

Job Type: Full-time

Contact: [contact hidden]

About the Role

Based solely in local NI offices with a degree of flexibility, this is an opportunity for a Senior Mechanical Engineer with strong Mechanical Building Services Design experience to step into a leadership and delivery role in a fast moving and energetic sector.

Responsibilities

  • Managing the design delivery for decarbonising a range of commercial projects.
  • Delivering mechanical designs including schematics, calculations, plant selections, BOM’s, and project specifications
  • Developing and validating BMS control strategies, from design through to on-site verification
  • Collaborating with fabrication teams to ensure designs are accurately translated into manufactured solutions
  • Supporting commissioning activities, including optimisation and proofing of BMS controls
  • Attending internal and external design meetings and liaising professionally with clients, suppliers, and contractors
  • Mentoring and developing junior engineers

Requirements

  • Degree-qualified in Mechanical Engineering, Building Services, or equivalent
  • Chartered Engineer ideal but not essential (CIBSE or equivalent)
  • Minimum 5 years’ experience in a similar mechanical design role
  • Strong experience designing LTHW, MTHW, and steam heating systems
  • Solid understanding of UK & European legislation, standards, and best practice
  • Excellent communication, organisational, and problem-solving skills
  • Ability to manage workloads independently while contributing to team targets
  • Experience conducting site surveys, energy assessments, and audits
  • Proven ability to coordinate mechanical layouts and service routes
  • Fluency in written and spoken English is essential

What You Would Ideally Have

  • Proficiency with AutoCAD, Revit, and BIM 360
  • Experience using IES, Hysopt, or similar simulation software
  • Delivery of energy efficiency measures and decarbonisation strategies
  • Hands-on experience with low-carbon and heat pump technologies, including >1MW systems
  • Knowledge of heat pump refrigerants and system optimisation
  • Design of solar thermal installations and district heating networks
  • Data centre experience (HTG & CHW systems)
  • BREEAM implementation on retrofit projects
  • Building energy metering, monitoring, and verification

How to Apply

Forward CV to [contact hidden] or call [contact hidden].

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