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Construction Inside IR35 mechanical project engineer

6 mechanical project engineer jobs found

CL
Aug 21, 2026  
Commissioning Engineer - Major Water Treatment Project
Contract Role | Inside IR35 | Leicestershire Hays Civil Engineering are recruiting for a Commissioning Engineer to join a leading UK infrastructure contractor delivering a major wastewater treatment upgrade programme in Leicestershire.This is an excellent opportunity to work on a high-profile water project involving significant improvements to treatment capacity, environmental performance and long-term operational resilience at a major wastewater treatment facility. The Role As Commissioning Engineer, you will be responsible for planning, coordinating and delivering commissioning activities across mechanical, electrical, instrumentation, control and process systems. You will play a key role in ensuring assets are safely and efficiently brought into service and handed over to operations.Working as part of a multidisciplinary delivery team, you will support all aspects of commissioning from early planning and testing through to final system acceptance. Key Responsibilities...
IR35 Status:
Inside IR35

CV-Library Loughborough, Leicestershire Contractor
CL
Aug 21, 2026  
PWAY Senior Project Engineer
Senior Project Engineer (Track) Location: Manchester (Hybrid - minimum 3 days per week in the office or project supplier offices) - must be within 90 mins of Manchester Rate: Up to £500 per day Umbrella (Inside IR35) Contract: Initial 3-month contract with potential for extension About the Opportunity We're recruiting for a Senior Project Engineer (Track) to support one of the UK's most significant long-term rail infrastructure programmes, helping shape the future of the rail network over the next 30 years. This is a fantastic opportunity to work on major enhancement projects involving new railway infrastructure, capacity upgrades, electrification and line speed improvements across the North of England. What We're Looking For To be considered for this role, you'll ideally have previous experience working on Network Rail infrastructure projects, or strong track design experience within the early development and design phases of rail projects. You'll be confident reviewing...
IR35 Status:
Inside IR35

CV-Library Manchester, UK Contractor
CL
Aug 20, 2026  
Assistant Pre-Construction Manager
Assistant Pre-Construction Manager Location: London (Hybrid - 3 days office/site, 2 days flexible) Rate: Up to £300 per day (Inside IR35) Contract: 12 Months (Strong potential for extension or permanent opportunity) Start Date: ASAP The Opportunity Our client is a leading international design and build specialist, delivering high-quality workplace, retail and commercial fit-out projects for some of the world's best-known brands. Due to continued growth, they are looking to appoint an Assistant Pre-Construction Manager to join their expanding Pre-Construction team. This is an excellent opportunity for someone with a background in pre-construction, estimating or quantity surveying who is looking to develop their career within a fast-paced design and build environment. Working closely with the Head of Commercial, Business Development, Design and Project Delivery teams, you will take ownership of projects through the pre-construction phase, supporting tenders from initial...
IR35 Status:
Inside IR35

CV-Library City of London, London Contractor
CL
Aug 19, 2026  
Section Engineer - Civils / Infrastructure
Job Title: Section Engineer - Heavy Civils/Infrastructure - Heathrow Airport Rate: £400-£425 per day (Inside IR35) Contract Length: 6-9 months (strong likelihood of extension) Location: Heathrow Airport, Airside & Landside Job Description: TRIbuild Solutions is recruiting an experienced Section Engineer on behalf of a Tier 1 contractor delivering heavy civils and infrastructure upgrade works at Heathrow Airport. The role covers both airside and landside operations and offers an initial 6-9 month contract with strong potential for extension. The successful candidate will take ownership of a defined section of works, ensuring technical delivery is compliant with design, programme, and quality requirements, while working closely with the wider project team. Key Responsibilities: Manage day-to-day engineering delivery for allocated section of works Oversee and coordinate subcontractor activities, ensuring compliance with programme, quality, and safety standards Undertake...
IR35 Status:
Inside IR35

CV-Library Feltham, London Contractor
CL
Aug 19, 2026  
Survey Engineer
Are you a Survey Engineer with experience working within the Rail industry? Location: Hybrid, with site visits across Swindon, Bristol, Cardiff, Birmingham or York Contract: 12 months IR35: £320 - £420 Inside IR35 Are you an experienced Survey Engineer with rail industry experience? This is an opportunity to support a varied portfolio of rail infrastructure projects, providing specialist surveying expertise across design, maintenance and enhancement works. You will plan, deliver and assure survey activities, review technical outputs and work closely with multidisciplinary project teams. You will have the autonomy to apply your professional judgement and help ensure survey work is accurate, compliant and delivered safely. What you will need: ·Current PTS ·Current AC and DC competencies ·Railway surveying experience ·Strong technical assurance and stakeholder management skills ·Ability to travel to offices and rail sites
IR35 Status:
Inside IR35

CV-Library United Kingdom Contractor
CL
Aug 16, 2026  
Site Engineer
Site Engineer Location: Cheltenham Contract: 3 Months (Potential Extension) Rate: Competitive Daily Rate – Inside IR35 An exciting opportunity has arisen for an experienced Senior / Site Engineer to join one of the UK's largest highways infrastructure projects.  The Role Reporting to the Sub Agent, you'll play a key role in supporting the site management team while providing guidance and mentoring to a team of junior engineers. This is a self-delivery project, so we're looking for someone who is confident, proactive and capable of hitting the ground running. You'll be responsible for maintaining engineering standards on site whilst supporting the delivery of major highways and infrastructure works. Key Responsibilities Report directly to the Sub Agent, providing technical engineering support. Mentor and support junior Site Engineers, reviewing setting out, QA documentation and engineering records. Manage engineering activities across highways works including earthworks,...
IR35 Status:
Inside IR35

CV-Library Cheltenham, UK Contractor
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