Commercial Manager – Mechanical Engineering Contractor

Company: AJ Group
Apply for the Commercial Manager – Mechanical Engineering Contractor
Location: London
Job Description:

COMMERCIAL MANAGER / MANAGING QUANTITY SURVEYOR

ABOUT THE COMPANY

We’re partnered with a Leading Mechanical and Process Engineering Contractor delivering technically complex projects across semiconductor, life sciences, datacentres and advanced manufacturing.

With a strong reputation for engineering excellence, innovation, and collaborative project delivery, this organisation continues to secure high-value, mission-critical projects across Ireland and Europe.

THE ROLE

We’re seeking an experienced Commercial Manager / Managing / Senior QS to join their high-performing project team in London.

This is a key senior hire, responsible for leading the commercial function on major mechanical and process projects – overseeing everything from pre-construction through to final account.

You’ll play a critical role in ensuring strong commercial performance, effective cost control, and robust contract management across complex, high-value builds.

KEY RESPONSIBILITIES

  • Own the commercial function across major mechanical projects.
  • Manage contracts & risk, including variations, claims, procurement strategy and subcontractor engagement.
  • Drive cost performance producing forecasts and reporting on value, margin and risk.
  • Oversee measurement & valuations including BoQs, rate build-ups and agreement of project accounts.
  • Control project finances, from interim applications through to subcontractor payments and change management.
  • Lead and develop the commercial team, working closely with engineering, planning and project delivery.
  • Act as a key commercial interface with clients and supply chain, ensuring smooth and commercially sound delivery.

ABOUT YOU

  • 8+ years’ experience in Mechanical QS / Commercial roles.
  • Degree qualified in Quantity Surveying or Construction Economics.
  • Strong background in mechanical services projects.
  • Experience on semiconductor, cleanroom, or industrial projects highly desirable.
  • Proven track record managing projects through full commercial lifecycle.
  • Strong knowledge of contract forms (NEC, FIDIC, etc).
  • Excellent commercial acumen, negotiation, and stakeholder management skills.

Posted: May 23rd, 2026