Principal Mechanical Engineer

  • Permanent
  • London
  • £70000 - £75000 per annum + Profit Share + Bonus + Hybrid working GBP / Year
  • Applications have closed.

Principal Mechanical Engineer

Due to growth, they are now looking for a Principal Mechanical Engineer for their London studio.

Someone who can lead projects and inspire technically, commercially, and culturally.

What You’ll Be Doing:

  • Leading mechanical design across a variety of commercial office fit-outs, schools, theaters, residential buildings, hotels, and major decarbonization schemes.
  • Managing major projects from early stage through to delivery on site (RIBA Stages 2-6).
  • Supporting and mentoring engineers from Graduate to Senior level.
  • Collaborating closely with their Electrical, PH, and Sustainability teams to deliver considered, coordinated design solutions.
  • Driving innovation, everything from developing new tools to workflow improvements, with full IP ownership and support.
  • Using Revit, H2X, and Bluebeam to develop and review technical content.

Who you are

  • An experienced Senior or Principal Mechanical Engineer, ideally with experience in consultancy.
  • Ambitious, self-driven, and passionate about mentoring others.
  • Strategic in your thinking and consistent in your project delivery.
  • A strong communicator who builds trust quickly.
  • Eager to shape not just projects, but the company’s future.

What makes them different?

  • Transparent Salary Structure – no smoke and mirrors; fair and open across the team.
  • Profit Share + Bonus – regular reviews in June and December.
  • You Own Your IP – any tool, plugin, or product you develop. You keep it, they will back it, you benefit.
  • Inclusive & Social Culture – They do proper team days out and have a genuinely supportive vibe.
  • Wellbeing Support – Monthly contribution towards a healthy activity of your choice.
  • Continuous Growth – Mentoring from the two Directors, constant CPD, and exposure to cutting-edge decarbonisation and sustainability work.

This isn’t just a step up from Senior to Principal.

It’s a chance to shape the culture, direction, and legacy of a growing consultancy.

If you want your ideas to count, your projects to challenge you, and your team to back you, this is it.

Apply for this role