Senior / Principal Mechanical Engineer

Mechanical Engineer - Senior / Principal (Building Services) Location: Plymouth / Exeter Employment Type: Permanent Overview A leading global multidisciplinary consultancy is strengthening its Mechanical Building Services capability across Exeter and Plymouth, supporting delivery of complex, high-profile infrastructure and defence projects. The role sits within a building services team, delivering multidisciplinary engineering solutions across defence, infrastructure, healthcare, justice, education and commercial developments. A significant proportion of workload is within secure environments requiring high technical assurance, resilience and performance-led engineering design. Key Responsibilities Lead mechanical building services design across all RIBA stages (0–7) Design HVAC systems including heating, cooling, ventilation and associated plant Provide technical leadership across multi-disciplinary project teams Produce and review calculations, specifications and detailed design outputs Ensure compliance with UK regulations, CIBSE guidance and internal standards Attend and lead client and stakeholder meetings Mentor and support junior engineers Oversee technical quality and design assurance across projects Contribute to BIM coordination and digital engineering processes Requirements Degree qualified in Mechanical Engineering or Building Services Engineering Strong consultancy experience in mechanical building services design Proven delivery of UK construction projects across multiple stages Ability to lead technical design on complex, multi-disciplinary schemes Chartered Engineer or working towards (required for Senior/Principal progression) Experience in defence or secure infrastructure advantageous Strong Revit / BIM capability desirable Benefits Work on nationally significant defence and infrastructure programmes Clear progression into Associate and leadership roles Hybrid and flexible working culture Strong global technical expertise network Long-term secured pipeline of major projects If you're interested, please contact Conner Richards at RGB Recruitment – (url removed)