Senior Mechanical Design Engineer

Senior Mechanical Design Engineer – Building Services | London – Up to £80,000 + Package

Are you a Mechanical Building Services Design Engineer ready to take the technical lead on high‑quality residential developments?

This is an exciting opportunity to join a leading, family‑run building services and construction contractor renowned for delivering sustainable, design‑led housing schemes across London and the South East.

You’ll lead the mechanical design delivery on two new‑build residential developments (106 and 72 units) progressing through RIBA Stages 3–4. Working closely with internal design teams, architects, and external consultants, you will be responsible for producing efficient, compliant and buildable mechanical solutions.

• Taking ownership of the full mechanical design package from concept to detailed design
• Producing and reviewing technical drawings, specifications and coordinated layouts
• Ensuring compliance with CIBSE standards and Building Regulations
• Developing low‑carbon strategies, including communal ASHP systems in line with CIBSE CP1
• Supporting design coordination and buildability reviews with construction teams
• Providing technical leadership and mentoring within the design function

• Degree or HNC/HND in Building Services or Mechanical Engineering
• Extensive experience in mechanical design for residential or mixed‑use developments – essential
• Strong knowledge of HVAC systems, ASHP systems, CIBSE CP1 and modern low‑carbon technologies
• Excellent coordination, communication and stakeholder management skills
• Confidence producing detailed technical information and design deliverables

• Opportunity to lead key residential schemes from design through delivery
• Join a respected, design‑focused contractor that values innovation and quality
• Work within a collaborative, family‑driven culture offering autonomy and progression
• Competitive salary up to £80,000 and long‑term career stability

• Candidates must have proven UK building services residential design experience.
• No visa sponsorship can be offered for this role.
• This is not a hybrid role and will require 4‑5 days a week in office.

Start ASAP.

Mid‑Senior level

Full‑time

Engineering and Information Technology

Staffing and Recruiting, Construction, Design Services