Principal Mechanical Engineer - Mission Critical

Principal Mechanical Engineer
 
Location:  London
 
Salary: £65,000 - £85,000
 
Are you a talented Principal Mechanical Engineer looking to work on some of the most inspiring and socially impactful projects in the world?  
 
This is your opportunity to join a globally respected, employee-owned consultancy that blends technical excellence with a deep commitment to shaping a better world. 
 
YOUR NEW ROLE 
 
As a Principal Mechanical Engineer, you will play a key role in delivering multidisciplinary projects across sectors such as transport, education, healthcare, arts, and urban regeneration. You’ll collaborate with experts in architecture, structural engineering, sustainability, and digital design to create innovative, inclusive, and resilient infrastructure. 

YOU WILL 

• Lead mechanical design delivery across all RIBA stages 

• Collaborate with multidisciplinary teams to ensure seamless project execution 

• Liaise confidently with clients, contractors, and stakeholders 

• Provide technical input into feasibility studies, reports, and proposals 

• Apply innovative approaches to engineering challenges 

• Chartered Engineer (or working towards) with IET, CIBSE, or similar 

• Degree in Electrical Engineering or equivalent experience 

• Proven experience in building services electrical design 

• Proficient in energy‑modelling tools (ideally IES), 3D modelling (Revit) and familiar with 6Sigma CFD for data‑centre applications. 

• Strong communication and collaboration skills 

• Eligibility for Security Clearance for certain high-profile projects 

• A people-first, inclusive culture with a strong sense of purpose 

• Opportunities to work on globally recognised, multidisciplinary projects 

• Support for professional development and career progression 

• A collaborative environment that values innovation and social impact 

• Hybrid working model 

• Profit share scheme 

• Incredible pension scheme 

• Private medical insurance 

• Life assurance and income protection 

• Flexible benefits including dental, critical illness, and gym discounts 

• 25 days annual leave + public holidays 

• Professional membership subscriptions 

• Volunteering days and community engagement opportunities