Senior/Principal Mechanical Engineer

Aldwych Consulting Ltd; Greater London; On-site; GBP 55,000 - 70,000; Full time

Job summary

A reputable building services consultancy in London is searching for a Senior or Principal Mechanical Engineer. This role involves managing mechanical projects, leading design efforts, and enhancing client relationships. The ideal candidate has a degree in Mechanical Engineering or Building Services and significant experience within the consultancy sector. The position offers a competitive salary of £55,000 - £70,000, a professional work environment, and opportunities for career progression.

Benefits

Competitive salary

Opportunity to manage projects

Clear progression

Collaborative working environment

Qualifications

• Strong experience within a building services consultancy environment.
• Proven experience managing projects and dealing directly with clients.
• Comfortable operating at Senior or Principal Engineer level.

Responsibilities

• Manage mechanical building services projects from inception to completion.
• Lead mechanical design, including calculations, specifications, and reports.
• Act as a client-facing representative, building and maintaining strong relationships.

Skills

Mechanical Engineering

Client relationship management

Project management

Technical leadership

Organisational skills

Communication skills

Education

Degree in Mechanical Engineering or Building Services

Job description

Senior / Principal Mechanical Engineer

London | £55,000 - £70,000 | Building Services Consultancy

I'm currently working with a well-established building services consultancy based in London that is looking to appoint a Senior or Principal Mechanical Engineer to join their growing team.

The consultancy delivers high-quality mechanical and multi-disciplinary building services solutions across a varied project portfolio, with a strong focus on client relationships, technical excellence, and project ownership.

Role

You’ll be responsible for managing and delivering mechanical building services projects from concept through to completion, acting as a key client‑facing contact and ensuring projects are delivered to a high technical standard. At Principal level, you will also mentor junior engineers and contribute to the strategic development of the mechanical team.

Key Responsibilities

• Manage mechanical building services projects from inception to completion
• Lead mechanical design, including calculations, specifications, and reports
• Act as a client‑facing representative, building and maintaining strong relationships
• Coordinate with internal and external multi‑disciplinary teams
• Oversee project delivery, programme, and technical quality
• Provide technical leadership and mentoring to junior engineers
• Ensure designs comply with current regulations and industry standards

About You

• Degree qualified (or equivalent) in Mechanical Engineering or Building Services
• Strong experience within a building services consultancy environment
• Proven experience managing projects and dealing directly with clients
• Comfortable operating at Senior or Principal Engineer level
• Excellent technical knowledge across mechanical building services systems
• Strong communication and organisational skills
• Working towards or holding IEng / CEng status is advantageous

What’s on Offer

• Competitive salary of £55,000 - £70,000, depending on experience + benefits
• London‑based role with responsibility and autonomy
• Opportunity to manage projects and client relationships
• Clear progression within a supportive and growing consultancy
• Professional, collaborative, and design‑focused working environment

For a confidential discussion, you can contact Roberto Sartori for a chat on #removed#.

Aldwych Consulting values diversity and promotes equality. No terminology in this advert is intended to discriminate against any of the protected characteristics that fall under the Equality Act 2010. We encourage and welcome applications from all sections of society and are happy to discuss reasonable adjustments and/or additional arrangements as required to support your application.

Candidates must be eligible to live and work in the UK.

For the purposes of the Conduct Regulations 2003, when advertising permanent vacancies we are acting as an Employment Agency, and when advertising temporary/contract vacancies we are acting as an Employment Business.