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Contractor 43
Engineering Outside IR35 Princes Risborough

43 jobs found in Princes Risborough

CL
Feb 14, 2026  
BMS Commissioning Engineering
BMS Commissioning Engineer, Tridium, Trend or Siemens Immediate start 4 - 6 month contract £300 - £360 per day Our client requires an accomplished BMS Commissioning Engineer with Tridium, Trend or Siemens Building Management Controls experience to join their team on either a project in London or a site in Hertforshire . There are several roles and projects currently available in: the City, East London and also in Hertfordshire, the best site would depend on your location and experience for each project. This is on a contract basis and will initially run for 4 to 6  months. To start immediately and is likely to be extended on a rolling basis.  This position could also be as the Lead Commissioning Engineer if you have the right experience and the rate would then reflect this. Key skills required:- Experienced in the Commissioning of Building Management Systems ( BMS ) Qualified and experienced with Tridium ,Trend or Siemens Control systems. CSCS Skill Card or equivalent is...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Feb 22, 2026  
Materials Engineer
Freelance Materials Engineer – Bulk Earthworks (HS2) Location: HS2 Major Infrastructure Project – Great Missenden Duration: 12 months Engagement: Freelance, Outside IR35 / CIS Are you a Materials Engineer experienced in bulk earthworks and construction quality? We are seeking a freelance Materials Engineer for a Tier 1 contractor supporting HS2 earthworks. The role focuses on material testing, classification, and quality assurance to ensure excavated and imported materials meet project specifications and can be reused safely. What you’ll do: Oversee field and laboratory testing of soils, aggregates, and stabilised materials Analyse test data and classify materials for reuse approval Monitor earthworks compliance with Inspection and Test Plans (ITPs) Investigate and resolve material non-conformance issues Maintain quality records and digital completion data (Dalux)What we’re looking for: Degree in materials, civil, or geotechnical engineering Minimum 2 years site experience...
IR35 Status:
Outside IR35

CV-Library Great Missenden HP16, UK Contractor
CL
Feb 22, 2026  
Geotechnical Engineer (North)
Freelance Geotechnical Engineer – Bulk Earthworks (HS2) Location: HS2 Major Infrastructure Project – Great Missenden  Duration: 12 months Engagement: Freelance, Outside IR35 / CIS Are you a Geotechnical Engineer with site experience in bulk earthworks? We are looking for a freelance Geotechnical Engineer to join a Tier 1 contractor on a major HS2 infrastructure project. You will supervise and monitor excavation, fill, compaction, and stabilisation works, assess ground conditions, and provide expert geotechnical advice to ensure works meet design specifications. What you’ll do: Monitor earthworks compliance with the Specification Identify dissolution features and advise on investigations Undertake daily inspections of formations, embankments, and cuttings Analyse geotechnical data to support design and quality reporting Advise site teams on mitigation and ground improvement measuresWhat we’re looking for: Degree in geotechnical / geological engineering or similar Minimum 2...
IR35 Status:
Outside IR35

CV-Library Sarratt, UK Contractor
CL
Feb 13, 2026  
Senior MEICA Commissioning Engineer
️ Senior MEICA Commissioning Engineer | Clean Water | Affinity Water Region Looking for a role where you can use your commissioning expertise before the kit even hits site? This is a senior-level position for someone who’s confident working across both delivery and pre-construction, shaping the commissioning approach, supporting design development, and guiding a small team across clean water projects within the Affinity Water region. You’ll be joining a leading contractor delivering a major AMP8 clean water programme where your input will directly influence design, delivery, and successful handover. 💡 The Role You’ll work closely with the Commissioning Manager, providing leadership and technical oversight across multiple projects. From writing commissioning plans and programmes to supporting the pre-construction phase, you’ll be the go-to person for all things MEICA commissioning. What you’ll be doing: • Leading the planning, coordination and delivery of commissioning...
IR35 Status:
Outside IR35

CV-Library Rickmansworth, Hertfordshire Contractor
CL
Feb 21, 2026  
Contract Project Manager
The Redline Group have an EXCLUSIVE opportunity for an experienced Contract Project Manager to manage and complete a project to bring two businesses together, working on a hybrid basis from their Oxfordshire offices on an initial 3-month Contract. This role has an indicative OUTSIDE IR35 determination therefore we can accept candidates who would like to operate through their own PSC. Working with companies that are part of a larger overarching group, their engineering and technical know-how is known around the world. You will be brought in to immediately assess the field of play and set about bringing the merger into reality. You will be a strong communicator, working with internal and external stakeholders, and tapping into your experience to provide solutions to problems at a critical time for this project. This is not a role for someone who wants to sit on the sidelines - you will be in the thick of it from the beginning! Key Skills Required - Contract Project Manager,...
IR35 Status:
Outside IR35

CV-Library Oxfordshire, UK Contractor
CL
Feb 26, 2026  
Contract Systems Engineer - Medical
The Redline Group are working EXCLUSIVELY with our Slough-based customer in their search for a Contract Systems Engineer - Medical on an initial 6-to-9 month opportunity, working on a hybrid basis. This role has an indicative OUTSIDE IR35 determination therefore we can accept candidates who would like to operate through their own PSC. A household name in the medical industry, their products are sold around the world and have been for many years. As a result of continued growth, combined with a number of successful project wins, they are seeking a range of professional contractors to help them complete their work on schedule. This is a fantastic opportunity for an experienced engineer to hit the ground running and deliver high quality work. Key Skills Required - Contract Systems Engineer - Medical, Slough: - Electronics engineering background (preferable) - Experience of validation and verification activities - Experience of working on requirements and integration -...
IR35 Status:
Outside IR35

CV-Library Slough, Berkshire Contractor
CL
Feb 26, 2026  
Contract Electronics Design Engineer - Medical
The Redline Group are working EXCLUSIVELY with our Slough-based customer in their search for a Contract Electronics Design Engineer - Medical on an initial 6-to-9 month opportunity, working on a hybrid basis. This role has an indicative OUTSIDE IR35 determination therefore we can accept candidates who would like to operate through their own PSC. A household name in the medical industry, their products are sold around the world and have been for many years. As a result of continued growth, combined with a number of successful project wins, they are seeking a range of professional contractors to help them complete their work on schedule. This is a fantastic opportunity for an experienced engineer to hit the ground running and deliver high quality work. Key Skills Required - Contract Electronics Design Engineer - Medical, Slough: - Proven experience of mixed signal electronics design with an emphasis on digital design - Altium design experience - Life cycle development...
IR35 Status:
Outside IR35

CV-Library Slough, Berkshire Contractor
CL
Feb 05, 2026  
Senior Electrical Design Engineer - MEP
Senior Electrical Design Engineer - Building Services Contract (Outside IR35) Hybrid Watford Office-Based We have a current opportunity for a Contract Senior Electrical Design Engineer on a contract basis. The position will be based in Watford. For further information about this position please apply. About the role: * Projects - spread across a wide range of sectors, though high amount of healthcare projects * Contract Length - 6 months (can be extended) * Location - Watford Requirements: * Experience working on complex projects * Experience working for a building services consultancy/contractor * Have experience leading/coordinating a team On offer is an excellent contract rate of between £45 - £50p/h for the successful applicant. This is an Outside IR35 assignment. About Energi People Energi People is a highly specialised recruitment consultancy with a strong foothold in the global built environment sector for over 20 years. We excel in connecting technical...
IR35 Status:
Outside IR35

CV-Library Watford, Hertfordshire Contractor
CL
Feb 22, 2026  
Composite Laminator - Days
Job Title: Composite Laminator (Days) Location: North Buckinghamshire Rate: £20 - £27 per hour (Outside IR35) Contract: Ongoing Overview: We are supporting a leading composites manufacturer in the North Buckinghamshire region who are looking for experienced Composite Laminators to join their day shift team. You will be producing high-quality composite components for motorsport and advanced engineering projects, working to tight tolerances and high standards. Key Responsibilities: Hand-lay carbon fibre laminating using pre-preg materials Working from technical drawings, ply books and work instructions Preparing moulds, including cleaning, release application and general prep Bagging and de-bagging components Trimming, bonding and finishing composite parts Ensuring components meet quality, dimensional and cosmetic requirements Supporting production schedules and working effectively within a team environment Requirements: Previous experience as a composite laminator...
IR35 Status:
Outside IR35

CV-Library Buckingham MK18, UK Contractor
CL
Feb 20, 2026  
Wheel Designer
Wheel Designer - Permanent or Contract (Outside IR35) position. A Wheel Designer is required to join a truly remarkable company who is an exclusive and prestigious luxury vehicle modifier for the UK and global markets.  The Wheel Designer will be joining an established Design Team and will be working on several fantastic new exciting projects for exclusive brands.  The company is a true end to end UK manufacturer ‘one of a kind’ in the aftermarket sector with a design focus that has always been 'OEM Plus' appealing to a customer base looking to achieve a little more individuality with their vehicle with premium components, while remaining respectful to the original designs of the manufacturer. Our client is looking for an experienced Wheel Designer to work on high-end bespoke alloy wheel projects, to support the design, development and production delivery of their bespoke alloy wheels.  Working closely with the Design and Manufacturing teams, you will be responsible for creating...
IR35 Status:
Outside IR35

CV-Library Milton Keynes, UK Contractor
CL
Feb 25, 2026  
Revit Technician (M&E)
Our client is a well-established engineering firm currently seeking to recruit several Revit Engineers/Technicians for a major M&E project within the North London area This is a long-term opportunity to contribute to a large-scale rail project. They are looking to bring on board around eight Revit Engineers/Technicians to support the ongoing works. This is an excellent opportunity to be part of a significant project, with the option to work on a hybrid basis. Details: * Day Rate £320 – 350 a day Outside IR35 * Payments: Weekly * Duration: 2 - 4 years worth of work * Hybrid Working: Looking for 3 days on site 2 days working from home * Start Date: ASAP What they are looking for? * Someone who has strong experience with Revit * A good understanding of M&E based design works * The ability to work both individually and as a team * The ability to work in a fast pace environment If this role seems of any interest, please feel free to call Adam on the details...
IR35 Status:
Outside IR35

CV-Library Harrow, Greater London Contractor
CL
Feb 22, 2026  
Composite Inspector
Composite Inspector – Contract Roles Outside IR35 Up to £35 per hour Days & Weekends available Motorsport sector 6 Month + Contract We’re supporting a leading motorsport organisation in their search for two experienced Composite Inspectors to join on contract. One role will cover day shifts, the other weekend shift. The role: Inspection of composite components to ensure compliance with drawings, specifications, and quality standards. Using a variety of inspection techniques including manual measurement, visual inspection, and non-destructive methods. Working closely with production and engineering teams to resolve quality issues. Documenting inspection findings and maintaining accurate quality records. Supporting continuous improvement initiatives to enhance manufacturing and inspection processes. The ideal candidate: Proven background in composite inspection within motorsport or high-performance engineering environments. Strong knowledge of composite materials...
IR35 Status:
Outside IR35

CV-Library Silverstone, Towcester NN12, UK Contractor
CL
Feb 26, 2026  
Contract Electronics Design Engineer - Altium
The Redline Group have an exciting opportunity for a Contract Electronics Design Engineer - Altium, to work with our customer to assist in the verification, validation of a project at their Camberley offices. The role is fully on-site, with the occasional opportunity to work from home for documentation tasks. This role has an indicative OUTSIDE IR35 determination therefore we can accept candidates who would like to operate through their own PSC. Unrivalled in their field, our customer is responsible for some of the most technically advanced defence products on the market. They have been an industry-renowned name for many years, with a reputation for intrinsically safe electronics. As a result of growth and major project wins, they are seeking the skills of a professional contractor to help them get the next generation of their product out to market both on time and in budget. Key Skills Required - Contract Electronics Design Engineer - Altium, Camberley: - Experience of mixed...
IR35 Status:
Outside IR35

CV-Library Camberley, Surrey Contractor
CL
Feb 21, 2026  
Design Engineer
A company that designs special-purpose machinery for a variety of industries is looking to hire a Design Engineer to work on a contract that is initially scheduled for 6 months (outside IR35) based at their site near Reading. The Role This position will involve using Solidworks for design work related to components for varying types of special-purpose machinery. Experience Ideal candidates will be fluent Solidworks users with previous experience in similar engineering type companies being desirable. Apply For more information on this position please email your CV to
IR35 Status:
Outside IR35

CV-Library Aldermaston, Berkshire Contractor
CL
Feb 13, 2026  
MEICA Commissioning Engineer
MEICA Commissioning Engineer | Clean Water Projects | Affinity Water Region Tired of the same old AMP talk? This is one of those rare commissioning roles where you’re trusted to deliver, not micromanaged. You’ll be working on clean water treatment and network upgrade projects within the Affinity Water region, helping to bring essential infrastructure to life across the region. If you like getting hands-on with complex systems, solving problems under pressure, and seeing results that make a real impact on communities, this one’s worth reading. 💡 The Role You’ll take ownership of the full commissioning process — from off-site testing to integration into live water assets. Reporting to a Commissioning Manager who understands the challenges first-hand, you’ll coordinate on-site activities, ensure safety, and make sure every system is delivered to spec and on time. Key responsibilities: • Lead day-to-day commissioning activities and support delivery teams on site • Produce accurate...
IR35 Status:
Outside IR35

CV-Library Barnet, Greater London Contractor
CL
Feb 26, 2026  
Contract NPI Manufacturing Engineer
Job Title: Contract NPI Manufacturing Engineer – Contract – Outside IR35 Rate: Up to £375 per day Contract Length: Minimum 6 months Start Date: ASAP Location: On-site, Wappenham Security Requirement (Essential) Candidates must be British citizens or eligible to obtain Security Clearance (SC). Applications cannot be considered without this requirement being met. About the Role A leading UK engineering organisation is seeking a Contract NPI Manufacturing Engineer to support the introduction of complex electro-mechanical systems into manufacture for a major MOD programme. This is an immediate requirement supporting a critical deliverable moving into production. You will be expected to operate with minimal supervision whilst driving manufacturing readiness across New Product Introduction activities. Prior defence experience is desirable; however, strong NPI experience is essential. The interview process will be one to two stages, with a quick turnaround for the right candidate. Key...
IR35 Status:
Outside IR35

CV-Library Wappenham, West Northamptonshire Contractor
CL
Feb 26, 2026  
Contract PSV Engineer
Contract PSV Engineer “Are you looking for ongoing opportunities as a PSV Engineer and to develop your skillset?” Why work as a Venatu Contractor? * Wages paid weekly. * Roles inside and outside of IR35. * Local work wherever possible, as well as national opportunities, short and long-term contracts available. * Developing your skill set, training courses subject to meeting the criteria. * Technical backup from a qualified engineer. What you will be doing as the PSV Engineer: * Carry out repair and maintenance to exceed DVSA standards. * Diagnostics and repair of mechanical faults including steering, brakes, air systems, driveline but not limited to. * Diagnostics and repair of electrical, and body systems. Use diagnostic equipment to assist diagnostics. * Routine inspection and servicing to maintain roadworthiness and MOT standards. * Carry out major unit changes and repairs where applicable. * Complete necessary paperwork including service sheets to a good...
IR35 Status:
Outside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Feb 20, 2026  
Mechanical Maintenance Engineer
Mechanical Maintenance Engineer Location: Thatcham Contract: 3-Month Rolling Contract Shifts: Panama Shifts – 12hr Days & Nights Rate: £33–£35p/h – Outside IR35 The Role We’re seeking a skilled Mechanical Maintenance Engineer to join a busy industrial site on a 3-month rolling contract. You’ll be responsible for ensuring all machinery runs smoothly and efficiently. Key Responsibilities: Reactive maintenance and fault-finding on production machinery Planned preventative maintenance (PPM) Component swaps and repairs on conveyors, cranes, cookers, slicers, pallets, and other equipment Ideal Candidate: Strong mechanical maintenance experience in industrial/manufacturing environments Recognised mechanical engineering qualification (Apprenticeship or Level 3 NVQ/equivalent) Excellent fault-finding and repair skills across mechanical components Completed mechanical apprenticeship (preferred) What’s on Offer: 3-month rolling contract Consistent Panama shift pattern (days...
IR35 Status:
Outside IR35

CV-Library Newbury, UK Contractor
CL
Feb 19, 2026  
Rail MEP P6 Planner
Are you an M&E P6 Planner with experience on railway infrastructure projects?   Do you have experience working on for an electrical subcontractor?   Contract Rate: £(Apply online only)/day Outside IR35   Location: Kings Cross - 3 days a week in the office & occasional site travel.   Contract Length: 6 months - rolling contract.   Role Details: My client is a M&E Subcontractor looking for a experienced P6 Planner to help support a growing work-bank.   You will be responsible for supporting the P6 Planning and programme of various lighting, fit-out and MEP works across rail infrastructure.   Essential: ·M&E P6 Planner with experience supporting railway infrastructure projects. ·Experience working for railway electrical subcontractors
IR35 Status:
Outside IR35

CV-Library Greater London, UK Contractor
CL
Dec 04, 2025  
5359 - E&I Package Manager
E&I Package Manager Surrey (hybrid) circa £70 per hour LTD (Outside IR35) initially 12 months Mon-Fri Advantage Resourcing is partnering with a leading engineering organisation to recruit an E&I Package Manager based in Surrey. You will be responsible for the delivery of major electrical packages for a significant Brownfield / Greenfield facility.   What will you be doing? Be the focal point between the Client and the Business Work with packages which include modifications to the existing power management system, existing 11kV switchgear and for new transformers, as well as other Electrical equipment such as 110kV switchgear, etc. Drive the multi-functional delivery, including integrating with the construction team on ROS dates, build sequence etc and facilitating stakeholder buy-in. Support the engineering disciplines with a broad understanding of the scope.  A couple of things you should know: Solid engineering background to facilitate technical issues...
IR35 Status:
Outside IR35

CV-Library Oxshott, UK Contractor
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