Principal Mechanical Engineer, London

Overview

As a Principal Mechanical Engineer in a central London building services practice, you lead technical delivery and shape the discipline’s growth. You will oversee a diverse project portfolio, steer HVAC design, plant strategy, and compliance (Part L/Part F), and coordinate with multidisciplinary teams to deliver practical schemes. This role emphasizes technical leadership, business development input, and visible influence on the practice’s expansion. You work on-site full time and drive high-quality outcomes in a dynamic, client-facing environment.

Responsibilities

• Technical leadership of the mechanical discipline
• Project portfolio responsibility
• Business development input
• Influence on practice growth and direction
• HVAC design execution and plant strategy
• Compliance work across Part L and Part F
• Coordination within a multi-disciplinary team to deliver schemes
• On-site delivery and collaboration
• Client-facing communication and stakeholder management

Key requirements

• Senior level (principal or associate director) experience
• Proven ability to lead mechanical design within building services
• Experience with HVAC system design, plant strategy, and regulatory compliance
• Strong coordination skills within multidisciplinary teams
• Location in or willingness to work in central London
• Experience in client-facing roles or BD input
• Track record of delivering complex schemes

• leadership
• communication
• collaboration
• Revit
• Hevacomp or IES
• AutoCAD

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