Principal Mechanical Engineer

Principal Mechanical Engineer – London
£65,000 – £80,000 + Benefits
Leading Multi‑Disciplinary Engineering Consultancy
Hybrid | London (Holborn area)

We are representing a leading multi‑disciplinary engineering consultancy for the built environment. They are seeking a Principal Mechanical Engineer to join their London Building Services Engineering team. This is an opportunity to take ownership of complex projects within a growing team and work closely with senior leadership on high‑profile, technically challenging schemes.

The consultancy has over 40 years of experience delivering engineering solutions across multiple sectors, including commercial, industrial, residential, retail, education and now, data centre. Their multi‑disciplinary teams provide strategic advice, engineering design, and project delivery for new build, extension, and refurbishment projects.

The London team is growing under a highly experienced director with a proven track record in business development, delivering diverse projects, and building high‑performing teams. Joining now provides opportunities to take on significant responsibility, contribute to high‑value projects, and support succession planning for senior leadership.

The team is currently delivering a range of notable projects, including a large‑scale data centre overseas and a £100 million commercial project in England, alongside automotive, retail, and residential projects. This variety ensures exposure to complex engineering challenges and opportunities to make a tangible impact on high‑value projects.

As Principal Mechanical Engineer, you will lead the delivery of medium to large‑scale mechanical projects while mentoring and managing project‑specific teams.

Key responsibilities include:

• Completing surveys and site inspections and undertaking mechanical design calculations
• Preparing drawings, technical specifications, and reports
• Peer reviewing and checking designs prepared by others
• Managing project‑specific teams of engineers and support staff
• Allocating and overseeing project workloads to ensure efficiency and quality
• Managing client relationships and commercial aspects of projects, including budgets and costs
• Identifying additional opportunities within existing and new client relationships
• Contributing to the professional development of team members through mentoring and PDRs

You will work across a full range of mechanical systems, including HVAC (including clean/dry rooms), heating, cooling, steam, compressed air, BMS, hot and cold water, and foul drainage.

The ideal candidate will be a Chartered Engineer (CEng – CIBSE or IMechE) with:

• At least 10 years’ post‑graduate experience in UK‑based building services consultancy
• Proven ability to deliver complex mechanical engineering projects
• Strong technical knowledge and client‑facing communication skills
• Experience mentoring and managing teams of engineers
• Proficiency in Revit MEP, NBS, and EDSL Tas/IES VE
• Experience with steam systems and clean/dry room environments (desirable)

• £65,000 – £80,000 salary, plus benefits
• Hybrid working (typically three days in the office, two from home, with flexibility considered)
• Opportunity to lead projects within a growing London team with clear succession plans for senior roles
• Exposure to high‑profile projects including a large‑scale data centre overseas and a £100 million commercial project in England
• Supportive, collaborative culture with access to professional development and mentoring programs
• Chance to work closely with a highly experienced director who drives business development and team growth

This is an excellent opportunity for a senior mechanical engineer looking to take a leadership role, manage high‑profile projects, and contribute to the growth and development of a dynamic building services team.

If you are an ambitious mechanical engineer ready to take a leading role and progress within a respected, expanding consultancy, please apply or contact me directly for a confidential conversation.

Please contact David Hilditch at RGB Network for more information or apply here now!