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Contractor 18
Outside IR35 London site engineer

18 site engineer jobs found in London

CL
Mar 14, 2026  
DV Cleared Control Systems Engineer
DV Cleared Senior Software Engineer Aldermaston - Onsite 12-month contract | Outside IR35 Are you a DV cleared Software Engineer who can take full ownership of software delivery on site? Do you enjoy building Siemens PLC solutions from scratch in secure, regulated environments? Looking for a long-term contract with a strong on-site engineering focus? What's in it for you ·£650 to £750 per day ·Outside IR35 ·12-month contract ·4-5 days onsite per week ·Work on high-security, technically challenging projects What will you be doing? ·Designing, developing and programming Siemens PLC systems from scratch ·Leading all software activities on an assigned project ·Configuring Siemens PLCs, HMIs and associated networks ·Producing on-site test documentation and supporting FATs and SATs ·Carrying out on-site testing and commissioning of PLC systems ·Acting as the technical interface with the client during delivery ·Providing technical leadership, mentoring and support to other engineers...
IR35 Status:
Outside IR35

CV-Library Reading, UK Contractor
CL
Mar 14, 2026  
Freelance AV Engineer - Own Van Required
Lead and Team Members Required Contract Outside IR35 Day and Night Shifts We are recruiting teams of Audio-Visual Engineers to support an ongoing programme of AV installation, upgrade and decommissioning work across multiple end clients. This work supports refresh and change programmes across retail, transport and commercial environments and will involve practical, hands-on AV installation and removal work carried out both during the day and out of hours. Assignments will vary by site and client and are offered on an ongoing, as and when basis. Key Responsibilities • Installing and removing AV equipment including screens, digital signage players, brackets and associated cabling • Supporting AV upgrade and refresh projects across live operational sites • Decommissioning existing AV hardware where required • Working independently or as part of a two-person team • Completing work during daytime and overnight shift windows depending on end client • Following RAMS, site...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
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
Mar 19, 2026  
Senior Engineer-Utilities-London
URGENT: Senior Engineer-North West London-£Freelance Rate OUTSIDE IR35 We are urgently looking for a Senior Engineer on a freelance basis for a top client of ours who are undertaking a major Gas Diversion scheme as part of the HS2 works in London. Based from their site you will be responsible for assisting with site paperwork (RAMS etc), overseeing site activities and Engineers on site, QA, Health & Safety and attending regular meetings. To be considered you will have a minimum of an HNC in Civil Engineering and have Utilities/diversion experience to your name with HS2 exposure also a great help. SMSTS, CSCS are both required as minimum. Excellent rate that is outside IR35 is on offer and immediate start with ongoing contract that will go well into 2027! It is a top role with a client we know well and can highly recommend! If interested, please send a copy of your CV to Dave Rowe by email or call Dave on (phone number removed) anytime
IR35 Status:
Outside IR35

CV-Library Camden, Greater London Contractor
CL
Mar 15, 2026  
Principal Temporary Works Engineer
Principal Temporary Works Engineer Contract: Long-term Location: Remote with required site/office visits Rate: Competitive Scope: Outside IR35 Overview Our client is a leading UK infrastructure delivery specialist, supporting major national programmes across transportation, energy, water, defence, and complex engineering environments. They are recognised for delivering high-integrity design and construction solutions on some of the country’s most critical and technically demanding projects. With a strong focus on safety, innovation, and sustainable delivery, they work in partnership with government and industry to modernise and maintain essential infrastructure. We are seeking a Principal Temporary Works Engineer to join a specialist design team on a long-term contract. You will lead temporary works engineering activities across a range of complex projects, ensuring safe, compliant, and efficient design solutions. This role requires strong technical leadership, design assurance...
IR35 Status:
Outside IR35

CV-Library Greater London, UK Contractor
CL
Mar 15, 2026  
Senior Civil Design Engineer
Job Title: Civil Engineer - Water Rate: £35 to £45 per hour (Outside IR35) Location: Slough Type: Contract | Outside IR35 | Hybrid working About the Role: Our client is seeking an experienced Civil Engineer with strong UK water sector experience to support the delivery of complex infrastructure and non-infrastructure projects. This is a contract opportunity operating outside IR35, offering long-term project stability and hybrid working. You will provide hands-on technical expertise across the full project lifecycle, supporting design, coordination, and delivery on critical water industry schemes. About Our Client: Our client is a well-established UK engineering consultancy with a strong presence in the water sector. They are recognised for delivering technically robust, sustainable solutions and for working collaboratively with contractors, clients, and stakeholders across major programmes. Key Responsibilities: Project Delivery Support and deliver water sector projects...
IR35 Status:
Outside IR35

CV-Library Slough, Berkshire Contractor
CL
Mar 12, 2026  
HGV Technician / HGV Mechanic / HGV Fitter - Slough *contractor
Roles - HGV Technician / HGV Mechanic / HGV Fitter Location: Slough Pay Rate: £33.00 per hour. Outside IR35 Do one of these roles describe you? Do you feel undervalued your current role? Are you an experienced HGV Mechanic with a level 3 qualification or equivalent? Are you available to start work right away? Why not come join our team of engineers here at Excel Resourcing, we specialise in supporting several blue-chip clients who operate in the road transport industry. Benefits of working for Excel: * Weekly Pay * Long-term contracting work * Product Training provided * Minimum Hourly Rate of £33.00 These roles involve: * Carrying out routine maintenance and repairs on all makes HGV. * Diagnosing and rectifying all types of HGV faults * Ensuring all vehicles worked upon are handled carefully and that the relevant precautions are taken whilst on the premises. * Liaising with the parts department to attain correct parts. * Ensuring health & safety...
IR35 Status:
Outside IR35

CV-Library Slough, Berkshire Contractor
CL
Mar 12, 2026  
HGV Technician / HGV Mechanic / HGV Fitter - Thurrock *contractor
Roles - HGV Technician / HGV Mechanic / HGV Fitter Location: Thurrock Pay Rate: £33.00 per hour. Outside IR35 Do one of these roles describe you? Do you feel undervalued your current role? Are you an experienced HGV Mechanic with a level 3 qualification or equivalent? Are you available to start work right away? Why not come join our team of engineers here at Excel Resourcing, we specialise in supporting several blue-chip clients who operate in the road transport industry. Benefits of working for Excel: * Weekly Pay * Long-term contracting work * Product Training provided * Minimum Hourly Rate of £33.00 These roles involve: * Carrying out routine maintenance and repairs on all makes HGV. * Diagnosing and rectifying all types of HGV faults * Ensuring all vehicles worked upon are handled carefully and that the relevant precautions are taken whilst on the premises. * Liaising with the parts department to attain correct parts. * Ensuring health & safety...
IR35 Status:
Outside IR35

CV-Library Stanford-le-Hope, Borough of Thurrock Contractor
CL
Mar 14, 2026  
Senior Mechanical Engineer
Astute's Power Team is partnering with a leading organisation within the Nuclear sector, to recruit a Mechanical Engineer for its Berkshire site. The Mechanical Engineer role comes with a 12-month minimum contract (Outside IR35) and the opportunity to work on a busy and strategically important site. If you're a Mechanical Engineer and are looking to work for an organisation that puts integrity and people at the forefront of everything it does, then submit your CV to apply today. Responsibilities and duties of the Mechanical Engineer role Reporting to the Site Manager you will: Oversee and support the manufacture and fitting of mechanical components Work from and interpret mechanical engineering drawings Provide hands-on engineering support within both site and factory environments Ensure assembly activities are carried out safely using appropriate hand tools Support and oversee lifting & slinging activities in line with site procedures Ensure compliance with relevant...
IR35 Status:
Outside IR35

CV-Library Aldermaston, Berkshire Contractor
CL
Mar 14, 2026  
Senior EC&I Engineer
Astute's Power Team is partnering with a leading organisation within the Nuclear sector, to recruit an EC&I Engineer for its Berkshire site. The EC&I Engineer role comes with a 12-month minimum contract (Outside IR35) and the opportunity to work on a technically complex and strategically important project. If you're an EC&I Engineer and are looking to work for an organisation that puts integrity and people at the forefront of everything it does, then submit your CV to apply today. Responsibilities and duties of the EC&I Engineer role Reporting to the Engineering Manager you will: EC&I Delivery Produce CE&I design concepts including SLDs, BCDs, cable schedules and layout drawings Develop designs that conform to relevant British and European standards and client requirements Produce and maintain LTQR / Technical Files in accordance with Quality Management Systems Ensure designs address operability, maintainability and safety considerations Deliver...
IR35 Status:
Outside IR35

CV-Library Aldermaston, Berkshire Contractor
CL
Mar 19, 2026  
RF Design Engineer - Contract
Contract RF Design Engineer – Cambridge (On-Site) – Outside IR35 – Immediate Start I’m working with a well-established, bespoke RF communications business based in Cambridge. They have a strong, technically capable team in place but are at capacity due to a surge in project demand. They now need an experienced RF Design Engineer to join them on a contract basis for an initial 3-month engagement, with potential extension. This is a hands-on role focused on component-level RF design and 4G/5G development work, supporting active customer programmes. You’ll be working on-site alongside a highly competent engineering team in a fast-moving, delivery-focused environment. Key details: Initial 3-month contract Outside IR35 Immediate start preferred On-site in Cambridge 4G / 5G RF design work on novel communication devices Component-level design responsibilityYou’ll need strong practical RF design experience and the ability to contribute immediately without heavy supervision. The...
IR35 Status:
Outside IR35

CV-Library Cambridge, UK Contractor
CL
Feb 14, 2026  
BMS Service Engineer
We have a fantastic opportunity for a proficient BMS Service Engineer to join a well-established building controls business working on multiple contracts in London on a contract basis. This contract position offers an excellent hourly rate paid weekly ( outside IR35) Company Profile Our client is a household name in the world of BMS providing full turnkey solutions to the Building Energy Management sector since the late 90’s. With their wealth of expertise, they are able to secure projects of all size and type and deliver a best-in-class service from design all the way to end user handover. The Role of the BMS Service Engineer As a BMS Service Engineer you will be responsible for the pre-planned and reactive maintenance of Building Management Systems, predominantly across London. You will have in-depth knowledge of BMS (Building Management Systems) hardware including fault finding, wiring and networking. You will possess the knowledge and experience to be involved with small...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Jan 21, 2026  
Senior HVAC Design Engineer
We are working with this leading multi national data centre and mission critical specialist who are working on schemes across UK and europe. With data centres being crucial components of today's infrastructure, supporting everything from business to public services. Operators must ensure the longevity, efficiency, and sustainability of their sites while optimizing them for mission-critical tasks. The teams are at the forefront of designing innovative and energy-efficient data centres, ensuring that our clients meet their goals of performance, cost-efficiency, and sustainability. The Opportunity Join our international and multidisciplinary team of passionate design engineers and help us create high-quality, sustainable, and innovative data centre structures. You will work on medium to large-scale mission-critical projects, covering all stages of design - from concept to construction supervision and handover. As part of an interdisciplinary team of architects, advisors &...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Dec 28, 2025  
Senior HVAC Design Engineer
We are working with this leading multi national data centre and mission critical specialist who are working on schemes across UK and europe. With data centres being crucial components of today's infrastructure, supporting everything from business to public services. Operators must ensure the longevity, efficiency, and sustainability of their sites while optimizing them for mission-critical tasks. The teams are at the forefront of designing innovative and energy-efficient data centres, ensuring that our clients meet their goals of performance, cost-efficiency, and sustainability. The Opportunity Join our international and multidisciplinary team of passionate design engineers and help us create high-quality, sustainable, and innovative data centre structures. You will work on medium to large-scale mission-critical projects, covering all stages of design - from concept to construction supervision and handover. As part of an interdisciplinary team of architects, advisors &...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Dec 28, 2025  
Senior Electrical Design Engineer
We are working with a leader in the hyper scale global data centre space -their portfolio includes hyperscale facilities for global tech giants, multi-megawatt data halls, and cutting-edge colocation sites. This is an opportunity to work with a team that sets the benchmark for technical excellence and innovation in the data centre sector. The data centres are at stage two and three so a good time to become involved. The position is as a Senior or Principal Electrical Engineer, you will play a key role in designing and delivering complex electrical systems for large-scale data centres collaborating with multidisciplinary teams to ensure resilient, high-performance solutions for some of the most advanced facilities in the industry. What you'll need to succeed Strong experience in HV, LV, generators, and UPS systems, or a willingness to learn and develop in these areas. Proven background in electrical design within building services. Ability to manage projects and mentor...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Nov 01, 2025  
MEP REVIT Technician
MEP REVIT Co-ordinator We have an immediately available position for an experienced MEP Biased Co-ordinator to join this thriving Consulting Engineers on an initial 4-6 Month contract The Revit Coordinator should be capable to coordinate the MEP services and confident to sit on BIM Coordination meetings The position is outside IR35 Your expert recruitment consultant is Trevor Parsons, call today on (phone number removed) or email (url removed) Eden Brown is committed to equality in the workplace and is an equal opportunity employer. Eden Brown is acting as an Employment Business in relation to this vacancy
IR35 Status:
Outside IR35

CV-Library City of London, London 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
Jan 19, 2026  
B2 Licensed Engrs with recency on Bombardier Global 5000 & 6000
MPI have a requirement for B2 Licensed Aircraft Engineers to work on site at Biggin Hill, Kent. TN16 3BN Contract is to start on Thursday 15th January 2026 and is ongoing as per Customer requirements. Applicants must have type rating/recency on Bombardier Global 5000 & 6000 Working Monday to Friday Days Shifts: 10.5hrs This contract is deemed to be outside of IR35 Rate of pay will be discussed on application. Please note applicants must have the right to live and work in the UK and be currently residing in the UK
IR35 Status:
Outside IR35

CV-Library TN16, Biggin Hill, Greater London Contractor
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