Principal Mechanical Engineer

Reference: 4767488

Job d:
Closing date:

Location:

London Salary:
Up to 80k + Package (per annum)
Job type:
Permanent Working pattern:
Full time / Flexible working

Industry: Engineering / Mechanical and Electrical Company:
Hays Consultant:
Adam Smeddle Hays office:
London-Central — 4th Floor, 107 Cheapside,Phone:
Email: adam.smeddle

Your new companyA well‑established, multi‑disciplinary building services consultancy is looking to appoint a Principal Mechanical Engineer to lead and grow their mechanical capability from their Epsom office.

This is a senior technical and leadership role, suited to an experienced engineer who enjoys owning projects, mentoring engineers, and playing a visible role in client delivery.

Your new role

As Principal Mechanical Engineer, you will take responsibility for the mechanical design and delivery of complex projects, from concept through to completion. You will act as the technical authority within the team, whilst supporting the wider management and growth of the office.

Key responsibilities include:

Leading mechanical design on medium to large‑scale projects

Overseeing and reviewing designs produced by senior and intermediate engineers

Providing technical guidance, mentorship and quality assurance

Attending client meetings and representing the business at project level

Supporting fee proposals, resourcing and project planning

Working closely with electrical, sustainability and BIM teams

Projects

The role offers exposure to a strong and varied project portfolio, including:

Large commercial office developments and CAT A/CAT B fit‑outs Healthcare and life sciences facilities

Higher education and research buildings

High‑end residential and mixed‑use schemes

Complex refurbishments and retrofit projects with a strong net‑zero focus

Many of the schemes are technically challenging, design‑led, and unsustainabilities, offering real scope for an engineer who wants to remain hands‑on at a senior level.

What you'll need to succeed

Degree qualified in Mechanical Engineering or Building Services Chartered or working toward CEng status (CIBSE / IMechE)
Strong background in UK building services design consultancy

Proven experience leading projects and managing engineers

Confident communicator with clients and internal stakeholders

What you'll get in return

Salary circa 80,000 (depending on experience)
Annual bonus

Enhanced pension

Hybrid / flexible working

Clear progression and leadership opportunities

What you need to do now If you're interested in this role, click 'apply now' to forward an up-to-date copy of your CV, or call us now. If this job isn't quite right for you but you are looking for a new position, please contact us for a confidential discussion on your career. #4767488 - Adam Smeddle