Principal Mechanical Engineer

Sector: Education, Residential, Commercial

Employment Type: Permanent

About the Company

A respected multidisciplinary building services consultancy based in the heart of the City of London is seeking a Principal Mechanical Design Engineer to join its expanding team. The practice delivers innovative, sustainable, and technically robust design solutions across a broad project portfolio, including high‑end residential developments, modern education facilities, and complex commercial buildings.

With a strong pipeline of work and a commitment to excellence, the company offers an environment where senior engineers can influence design direction, lead project delivery, and support the development of future talent.

The Role

As a Principal Mechanical Design Engineer, you will play a key leadership role within the mechanical team. You will oversee design delivery, manage client relationships, and ensure technical quality across multiple live projects. This position is ideal for an experienced engineer seeking greater autonomy and the opportunity to shape design strategy on flagship London schemes.

Key Responsibilities

• Lead mechanical design elements across education, residential, and commercial projects from concept to completion
• Provide technical leadership, ensuring quality standards and best‑practice engineering principles
• Manage and mentor junior and intermediate engineers
• Engage with clients, architects, and project stakeholders to deliver coordinated building services solutions
• Oversee production of reports, specifications, drawings, and technical documentation
• Contribute to fee proposals, resource planning, and project budgeting
• Support the business in driving innovation and sustainable design approaches

Requirements

• Degree in Mechanical Engineering or Building Services Engineering (or equivalent)
• Chartered status (CEng) or working toward it is highly desirable
• Significant experience operating at Senior or Principal level within a UK building services consultancy
• Proven experience delivering mechanical design for education, residential, and commercial sectors
• Strong understanding of UK building regulations, sustainable design, and low‑carbon technologies
• Excellent communication and stakeholder‑management skills
• Ability to lead projects and manage design teams effectively
• Competitive salary and benefits package
• Clear route to Associate
• Hybrid working options
• Continuous professional development and support with chartership
• Opportunity to work on high‑profile London projects