Senior / Principal Mechanical Design Engineer

Mechanical Building Services Design Engineers (Senior & Principal) - Edinburgh & Glasgow
A respected and design-led building services business is expanding its teams in both Glasgow and Edinburgh, following sustained project wins and recent strategic leadership changes. Having grown its headcount by over 33% in the past four years, and with continued momentum across Scotland and beyond, the business is now hiring Senior and Principal Mechanical Design Engineers to support ongoing project delivery and long-term team growth.

With award-winning projects including a major museum renovation and a growing portfolio of high-end commercial, cultural, and luxury brand work, this is a rare opportunity to join a business known for design quality, collaboration, and technical excellence.

The Opportunity - Senior & Principal Mechanical Design Engineers
We are recruiting Senior and Principal Mechanical Building Services Design Engineers for full-time, hybrid roles based in Glasgow or Edinburgh.

• Senior Design Engineer: Take ownership of projects across central Scotland and beyond, working closely with peers. You’ll deliver detailed mechanical designs, liaise with clients, and support junior design engineers where required.
• Principal Design Engineer: Lead complex design packages, work directly with clients, and contribute to technical quality across the business. While not a formal line manager, you’ll act as a key mentor and technical lead on projects for other design engineers.

What We Offer…

• Competitive salaries:
  Senior Design Engineer: £55,000 - £65,000
  Principal Design Engineer: Up to £80,000
• Hybrid working
• Prestigious, design-led project portfolio, including museums, luxury brands, and high-end commercial developments
• Diverse, inclusive offices with a healthy gender and age mix
• Collaborative team environment with one-to-one working and close director-level support
• A growing business offering real career progression as new leadership opens up future opportunities

Ready to explore a career move with long-term impact?