Senior Mechanical Project Engineer

Company: Carrington West
Apply for the Senior Mechanical Project Engineer
Location: London
Job Description:

Senior Mechanical Project Engineer – Water/Wastewater

Location: London

Rate: GBP65,000 – GBP75,000 per annum DOE + Package (Package details below)

Sector: Water Infrastructure

We are looking for an experienced Project Engineer with a background delivering complex engineering projects within the UK Water sector.

My client is a leading contractor delivering a significant programme of works as part of the AMP8 investment cycle across Thames Water’s infrastructure network. Due to continued growth, they are looking to strengthen their engineering team with an experienced Senior Project Engineer who can provide technical oversight, engineering assurance and delivery support across a range of complex Clean and Wastewater projects.

This is a key role within the project delivery function, working closely with Project Managers, Construction Teams, Design Partners, Supply Chain and Client stakeholders to ensure projects are delivered safely, efficiently and to the required technical standards.

The successful candidate will be responsible for supporting projects from early design development through to construction and commissioning, ensuring engineering solutions are robust, buildable and aligned with client requirements. You will act as a technical authority across multiple schemes, challenging designs where required, managing engineering risk and supporting successful project outcomes.

Key Responsibilities

  • Providing technical assurance and engineering governance across multiple concurrent water and wastewater projects
  • Supporting the delivery of complex multi‑million‑pound infrastructure schemes from concept through to completion
  • Reviewing engineering proposals, designs and technical submissions, providing challenge and guidance where required
  • Working collaboratively with design teams, construction teams, suppliers and subcontractors to ensure successful project delivery
  • Ensuring engineering solutions meet client specifications, regulatory requirements and operational needs
  • Supporting risk management, technical reviews and project decision‑making throughout the lifecycle of schemes
  • Managing interfaces between engineering, procurement, construction and commissioning activities
  • Supporting project teams with technical problem solving and resolution of engineering issues
  • Attending design reviews, progress meetings and stakeholder discussions with internal and external teams
  • Ensuring compliance with health, safety, quality and environmental standards
  • Supporting commissioning activities, testing, handover documentation and operational readiness
  • Assisting with programme, cost and change management, including technical input into variations and commercial decisions

Qualifications

  • Proven experience delivering engineering projects within the UK Water/Wastewater sector
  • Experience working on complex infrastructure projects, ideally within a regulated environment
  • Strong understanding of project delivery from design through construction and commissioning
  • Ability to review and challenge technical information and engineering solutions
  • Experience working with contractors, consultants, clients and supply chain partners
  • A strong understanding of engineering standards, assurance processes and project governance

Package

  • Company car or car allowance (up to GBP5,600 per annum)
  • Matched pension contributions up to 10%
  • 25 days annual leave + bank holidays
  • Private healthcare / medical insurance
  • Hybrid working (up to 2 days per week from home)

By applying for this position, you are agreeing for Carrington West to hold and process your personal data in accordance with our Data Protection Policy. Your data will be shared with third‑party clients specifically relevant to any roles you have applied for. If at any stage you wish to withdraw your consent, please contact us.

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Posted: July 19th, 2026