Senior Mechanical Engineer

Company: Advance TRS
Apply for the Senior Mechanical Engineer
Location: St Albans
Job Description:

Senior Mechanical Engineer – Water Sector

St Albans: Hybrid (3 Days Office)

Contract: £45–£50/hr (Outside IR35)

Advance TRS are supporting a rapidly growing consultancy in their search for a Senior Mechanical Engineer. Joining a newly formed London business unit, you’ll have the unique opportunity to help build a team from the ground up, influence how projects are delivered, and play a significant role in the future growth of the business within the UK water market.

You’ll lead the mechanical design of clean water and wastewater projects, producing high-quality engineering solutions while mentoring junior engineers and coordinating multidisciplinary design teams.

Key Responsibilities:

• Deliver mechanical design solutions for water and wastewater projects

• Produce calculations, reports, specifications and design drawings

• Lead and review work from junior engineers and CAD technicians

• Coordinate with suppliers, manufacturers and subcontract design teams

• Ensure designs meet industry standards, safety requirements and client expectations

• Support project planning, estimating and technical decision-making

About You:

• 8+ years’ mechanical design experience within the UK water sector

• Strong hydraulic design expertise

• Experience with clean water and/or wastewater projects

• Knowledge of electrical and control systems is advantageous

• Degree or HND qualified

• Working towards or already achieved Chartership

Why Join?

• Be part of a brand-new London team from the ground up

• Opportunity to influence processes, culture and future growth

• Secure long-term workload across major water sector frameworks

• Flexible permanent or outside IR35 contract options available

Apply now for a confidential discussion or contact Molly Brown for more information.

Posted: June 7th, 2026