Principal Mechanical Engineer

Human Capital Solutions UK; London; On-site; GBP 65,000 - 85,000; Full time

Job summary

A dynamic Building Services Consultancy is seeking a Principal Mechanical Engineer for their London studio. In this role, you will lead innovative projects, mentor junior engineers, and help shape the future of the company. With a transparent salary structure and a supportive culture, this position offers a unique chance to drive significant results in a growing firm.

Benefits

Profit Share

Bonus

Wellbeing Support

Continuous Growth

Inclusive & Social Culture

Ownership of IP

Qualifications

• Experienced Senior or Principal Mechanical Engineer with consultancy experience.
• Ambitious and self-driven with a passion for mentoring.
• Strong communicator capable of building trust quickly.

Responsibilities

• Lead mechanical design across diverse projects including commercial fit-outs and residential.
• Manage major projects from early stage to delivery.
• Support and mentor engineers from Graduate to Senior level.

Skills

Leadership

Project Management

Communication

Mentoring

Design Engineering

Education

Chartered Engineer

Tools

Revit

Bluebeam

Job description

1 day ago Be among the first 25 applicants

Human Capital Solutions UK provided pay range

This range is provided by Human Capital Solutions UK. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more.

Base pay range

Direct message the job poster from Human Capital Solutions UK

I help Building Services and Sustainability Engineers secure some of the best opportunities across the UK…

Principal Mechanical Engineer – To £75k + Profit Share + Bonus + Hybrid working

This isn’t your standard MEP and Sustainability consultancy.

Founded by two Chartered Engineers who were frustrated with the corporate grind, they have scaled steadily and created something unique. A bold, inclusive and forward-thinking business that empowers engineers to innovate, own their ideas, and grow fast.

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, theatres, residential, hotels, and major decarbonisation 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, consistent in your project delivery.
• A strong communicator who builds trust quickly.
• Eager to shape not just projects, but the company’s future.

What make 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 an 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 Building Services Consultancy.

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

Seniority level

• Seniority level

  Mid-Senior level

Employment type

• Employment type

  Full-time

Job function

• Job function

  Design, Engineering, and Consulting

• Industries

  Architecture and Planning, Engineering Services, and Design Services

Referrals increase your chances of interviewing at Human Capital Solutions UK by 2x

Sign in to set job alerts for “Mechanical Engineer” roles.

London, England, United Kingdom 2 days ago

City Of London, England, United Kingdom 2 weeks ago

London, England, United Kingdom 1 week ago

London, England, United Kingdom 3 weeks ago

London, England, United Kingdom 11 months ago

Dartford, England, United Kingdom 2 weeks ago

London, England, United Kingdom 2 weeks ago

London, England, United Kingdom 1 month ago

London, England, United Kingdom 6 days ago

London, England, United Kingdom 1 week ago

Leeds, England, United Kingdom 3 days ago

Kent, England, United Kingdom 4 weeks ago

London, England, United Kingdom 4 weeks ago

Harlow, England, United Kingdom 1 week ago

London, England, United Kingdom 1 month ago

Woking, England, United Kingdom 6 days ago

We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.