Mechanical Project Engineer

Mechanical Project Engineer - Water / Wastewater Location :Wanlip, Leicestershire  Rate: £450 per day Inside IR35  Hours: 45 hours/week  Duration: 6 months +   We are seeking an experienced Mechanical Project Engineer…

Inside IR35 Engineering
Pay rate £400 – £450/day
Contract type Contract
Posted 11 September 2026

Trusted. Transparent. Built for contractors. Thousands of UK contractors find their next contract on ContractorUK.

View all engineering jobs ›

About this contract

Mechanical Project Engineer - Water / Wastewater
Location :Wanlip, Leicestershire
 Rate: £450 per day Inside IR35
 Hours: 45 hours/week
 Duration: 6 months +
 
We are seeking an experienced Mechanical Project Engineer to join a major water and wastewater infrastructure project in Wanlip, Leicestershire.
You will support the delivery of a significant upgrade to an existing wastewater treatment facility, working alongside the Project Manager, design, procurement and construction teams to ensure mechanical packages are delivered safely, on programme, within budget and to the required quality standards.
 
Key Responsibilities
·Author technical scopes of work and review mechanical tender submissions.
·Undertake gap analysis and manage mechanical design RFIs.
·Identify and resolve design and interface issues across mechanical D&B packages.
·Manage design development, Revit models, digital mark-ups and construction redlines.
·Oversee mechanical installation, testing, commissioning and handover.
·Manage supply chain programmes, suppliers and subcontractors.
·Coordinate site investigations, design reviews and hazard studies.
·Support HAZOP, SWIFT and ALM meetings.
·Oversee procurement, factory/site testing and client training.
·Develop and manage Inspection & Test Plans (ITPs) and quality records.
·Liaise with site teams to ensure delivery against programme, budget and quality requirements.
·Support subcontract orders and assessment of variations/claims.
·Challenge poor practice, workmanship and quality where required.
 
Essential Experience
·Proven experience delivering major wastewater M&E projects.
·Strong mechanical project engineering background within the water/wastewater sector.
·Experience working with and manipulating Revit models.
·Experience with digital design mark-ups and construction redlining.
·Knowledge of SWIFTs, HAZOPs and ALM relating to mechanical equipment.
·Strong understanding of mechanical installation, commissioning and handover.
·Experience managing subcontractors, suppliers and mechanical D&B packages.
·Confident challenging poor practice and quality issues.
·Strong communication, coordination and stakeholder management skills

Apply for this job

You'll complete your application on CV-Library, our jobs partner.

← More engineering jobs

Set up for this contract

ContractorUK partners
Markel Direct IR35 and contractor insurance

Most agencies and clients ask for professional indemnity and public liability before you start.

Get your quote →
Umbrella companies Inside IR35: you will be paid through an umbrella

Compare the umbrella companies listed on ContractorUK before you accept.

Compare umbrellas →

Get new Engineering contracts by email

One email when new matches appear. Unsubscribe with one click.

Prefer to be found? Upload your CV to CV-Library — free