Job Description

Mechanical Design Engineer
Building Services
City of London
Up to 52,000 + Benefits | 30 Days Annual Leave | Flexible Working
Join one of the UK's most forward-thinking and fast-growing independent Building Services Consultancies, where quality, people, and culture are at the heart of everything they do.
About the Company
Founded over a decade ago, this practice has evolved from a small, ambitious consultancy into a thriving 40+ strong team of talented engineers across multiple offices. The past year has seen a strategic phase of growth, with 14 new team members joining their London office - a testament to their success, reputation, and the appeal of the company culture which they're so positively known for.
Now entering Phase 2 of their growth strategy, they're building on this momentum to expand further, enhance client partnerships, and continue delivering technically excellent and sustainable designs that shape the future of modern infrastructure.
Their people stay - and thrive - because they invest in them. With an 80%+ staff retention rate, a strong leadership team, and an environment that values collaboration, wellbeing, and development, this is a place where you can genuinely grow your career.
The Role
They're seeking a Mechanical Design Engineer to join the Building Services team in London. You'll be working on a diverse portfolio of projects, with around 70% of their work in the custodial sector (HM Prisons) and the remainder in commercial and public buildings.
The prison sector offers unique and rewarding technical challenges - far beyond what most expect. Within each facility, you'll find integrated environments that combine healthcare, fitness, accommodation, and high-security systems - all designed with a deep commitment to sustainability.
They're proud to have delivered the UK's first all-electric, net-zero prison, leading the way in supporting the Ministry of Justice's commitment to carbon reduction through innovative, fully electric systems powered by solar panels, heat pumps, and smart energy design.
What They're Looking For

• 3+ year's relevant Building Services design experience (consultancy or contractor background).
• Strong technical ability, from concept to technical
• Client-facing confidence - capable of leading design elements and attending DTM/site meetings.
• A genuine passion for sustainable design and technical excellence.

What They Offer

• They believe great work starts with great people - and they take care of theirs:
• 30 days annual leave + Bank Holidays.
• Flexible working options: 3 office / 2 home or 9-day fortnight.
• No weekly timesheets!
• Annual 300 sports & wellness membership.
• Supportive pathway to Chartership (CEng) and CPD opportunities.
• Exposure to challenging, high-profile projects that make a genuine social impact.
• Collaborative culture built around innovation, inclusion, and mutual respect.

Why Join Them?
At Their core, they believe quality isn't just about design - it's about people. They have built a consultancy where engineers stay, grow, and make a tangible impact on projects that matter. If you're looking for a place where your voice is heard, your career is supported, and your work helps build a better built environment, this is it.
Interested?
Apply today and let's arrange a call to discuss your goals and what matters most to you. After our chat, we'll meet for a coffee or a teams call to prepare for the next steps together.
Your expert recruitment consultant is Jamie Wynne, call today on 0207 422 7463 or email Eden Brown is committed to equality in the workplace and is an equal opportunity employer.
40,000.00 - 52,000.00
Per annum
GBP40000 - GBP52000 per annum + 20% Basic Salary Bonus, 36 days AL
Greater London
Full Time
Added 17/10/2025
Reference: 30658411012_1760687541

Skills Required