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. With an in-house design capability and a strong pipeline of projects, they offer a technically engaging role within a stable and supportive environment.

The Role

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

Key responsibilities include:

• 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

About You

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

What’s on Offer

• 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

Please note:

• 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.

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