Mechanical Design Engineer

Executive Integrity | B Corp®; Crawley; Hybrid; GBP 43,000 - 58,000; Full time

Benefits offered by this job

Share options

Private healthcare

25 days leave + birthday

EV/bike salary sacrifice

Chartership route

Job summary

Executive Integrity is seeking a Mechanical Design Engineer in Crawley, West Sussex, with a hybrid working pattern. You will own the mechanical design for large-scale building services, integrating heat networks, heat pumps and district heating with project delivery to clients and contractors.

The role supports Chartership progression, offers a competitive base around £50k, share options, private healthcare, 25 days leave plus your birthday, and salary sacrifice schemes.

Qualifications

• 2–5 years designing mechanical plant on larger-scale building services, heat networks or industrial projects.
• Designs traversing RIBA 4 and 5: P&IDs, isometrics, sizing and calculations that hold up on site.
• Working knowledge of heat pumps, boilers, chillers or CHP; familiarity with CIBSE, BSRIA and CDM.

Responsibilities

• Take low-carbon heat and power systems from concept to construction, pairing solar thermal and PVT with heat pumps, thermal storage and PV.
• Own the mechanical design on large commercial, industrial and district heating schemes that drive revenue.
• Front up to clients, architects and contractors, turning design into signed projects.
• Feed site performance back to the product team, shaping the next generation of the technology.

Skills

Mechanical design

Client facing

Job description

Mechanical Design Engineer · Location: Crawley, West Sussex (hybrid, flexible)

The Opportunity

A UK solar heat and power manufacturer has just closed government-backed investment to build its own UK factory. Its design team now earns revenue in its own right, and the pipeline holds the largest projects in the company’s history. This hire adds capacity where demand is outrunning the team.

The Impact You Will Have

• Take low‑carbon heat and power systems from concept to construction, pairing solar thermal and PVT with heat pumps, thermal storage and PV
• Own the mechanical design on large commercial, industrial and district heating schemes that drive revenue
• Front up to clients, architects and contractors, turning design into signed projects
• Feed site performance back to the product team, shaping the next generation of the technology

What Success Looks Like

• 2 to 5 years designing mechanical plant on larger‑scale building services, heat network or industrial projects
• Designs taken through RIBA 4 and 5: P&IDs, isometrics, sizing and calculations that hold up on site
• Working knowledge of heat pumps, boilers, chillers or CHP, and of CIBSE, BSRIA and CDM
• Owns a design with a senior engineer close by, not waiting to be told
• Wants the breadth and pace of a 30-plus person scale‑up over one lane in a large firm

What Is on Offer

£50,000 basic salary, share options and a discretionary bonus, private healthcare, 25 days plus your birthday, and EV and bike salary sacrifice. A route to Chartership alongside senior engineers who have delivered at scale and exposure that takes years to reach elsewhere.

Who are we?

Executive Integrity is a global executive search and recruitment consultancy for a more sustainable world with a focus on talent within the Maritime and Renewable Energy sectors. We give a proportion of all our profits to Renewable World, a charity that develops affordable and innovative renewable energy solutions to poverty‑stricken communities.