Mechanical Design Engineer

OUTSOURCE CONSTRUCTION LTD; Greater London; On-site; GBP 45,000 - 65,000; Full time

Job summary

OUTSOURCE CONSTRUCTION LTD in London is seeking a Mechanical Design Engineer to develop district heating networks and energy centres for renewable energy projects across the city.

You will design mechanical systems, size plant and pipes, and coordinate with electrical, controls and civil teams to deliver compliant solutions. The role emphasizes hands-on design work and collaboration with clients and contractors.

Qualifications

• Experience in mechanical building services or energy system design.
• Background in district heating, heat networks or large-scale renewable heating projects.
• Good knowledge of LTHW systems, energy centres and plant room design.
• Confidence producing calculations and technical design documentation.
• Ability to work with clients, consultants and contractors to resolve design challenges.
• Experience with heat pumps, hydraulic modelling or low-carbon energy systems is a plus.

Responsibilities

• Design district heating networks, energy centres and associated mechanical systems.
• Develop heating solutions including heat pumps, LTHW systems and thermal storage.
• Produce design calculations, drawings, specifications and technical reports.
• Select and size plant, equipment and pipework.
• Coordinate mechanical designs with electrical, controls and civil disciplines.
• Review technical submissions and respond to design queries during delivery.
• Support site teams through installation, testing and commissioning.

Skills

District heating

Renewable energy

LTHW systems

Calculations & reports

Client coordination

Heat pumps & modelling

Job description

Mechanical Design Engineer – Renewable Technologies & District Heating

Location: London

I’m looking to speak with Mechanical Design Engineers who have experience designing heat networks, energy centres and low-carbon heating systems.

The role involves developing mechanical designs from concept through to detailed design, working with the wider project team to deliver practical solutions for district heating and renewable energy projects across London.

What you’ll be doing

• Designing district heating networks, energy centres and associated mechanical systems.
• Developing heating solutions that may include heat pumps, LTHW systems and thermal storage.
• Producing design calculations, drawings, specifications and technical reports.
• Selecting and sizing plant, equipment and pipework.
• Coordinating mechanical designs with electrical, controls and civil disciplines.
• Reviewing technical submissions and responding to design queries during delivery.
• Supporting site teams through installation, testing and commissioning.

What we’re looking for

• Experience in mechanical building services or energy system design.
• A background in district heating, heat networks or large-scale renewable heating projects.
• Good knowledge of LTHW systems, energy centres and plant room design.
• Confidence producing calculations and technical design documentation.
• The ability to work with clients, consultants and contractors to resolve design challenges.

Experience with heat pumps, hydraulic modelling or low-carbon energy systems would be particularly useful.