Senior / Principal Mechanical Engineer ( Building Services)

Company: Arup
Apply for the Senior / Principal Mechanical Engineer ( Building Services)
Location: Belfast
Job Description:

Overview

In this role you lead the design and delivery of building services within a collaborative team, shaping sustainable, energy-conscious projects across sectors. You will guide system strategies, model and analyze performance, and ensure on-budget delivery while mentoring colleagues. The opportunity spans international projects from science and industry to healthcare and education, with a strong emphasis on renewables, energy modelling, and cross-disciplinary collaboration.

Pay / Benefits

  • profit share
  • private medical insurance
  • life assurance
  • income protection
  • flexible benefits
  • learning opportunities

Responsibilities

  • Lead design and delivery of building services systems across projects
  • Develop system strategies and coordinate with project teams and stakeholders
  • Guide thermal and comfort analysis of spaces
  • Manage production of models, drawings, reports and specifications to meet budget and deadlines
  • Supervise and collaborate with multidisciplinary teams
  • Apply experience in Science/Industry or Rail DAL contexts to project delivery
  • Support work-winning activities including fee estimation and proposals
  • Mentor and develop others through guidance and feedback

Key requirements

  • Chartered Engineer (IMechE / CIBSE) with broad hands-on experience in Building Services
  • Experience delivering complex projects with integration of renewables
  • Ability to plan resources, manage budgets, and contribute to proposals
  • Experience in detailed design stage in Science/Industry or Rail buildings across DAL
  • Knowledge of energy and carbon performance optimization
  • Familiarity with energy modelling tools (e.g., IES) and sustainability assessments
  • leadership
  • team collaboration
  • stakeholder communication
  • building services systems design
  • energy modelling with IES
  • renewable technology integration

…

Posted: October 16th, 2026