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Contractor 36
Engineering Outside IR35 Potters Bar

36 jobs found in Potters Bar

CL
Sep 12, 2026  
CONTRACT Senior Structural Engineer
Senior Structural Engineer - Contract Hemel Hempstead outskirts £47.00 - £50.00 per hour (outside IR35) A successful and well-established consultancy based on the outskirts of Hemel Hempstead is looking to appoint a Senior Structural Engineer on a contract basis following a strong run of recent project wins. This is an excellent opportunity for an experienced structural engineer who is comfortable working with a high degree of autonomy and can take responsibility for projects from initial design through to completion. The successful candidate will have at least 10 years' UK structural engineering experience, gained within a consultancy environment, and will have worked across a diverse range of projects. Experience within the data centre and industrial sectors is particularly desirable, although a broad project portfolio will also be valued. The role will involve providing senior technical input, undertaking structural design and calculations, liaising with clients and other...
IR35 Status:
Outside IR35

CV-Library Hemel Hempstead, Hertfordshire Contractor
CL
Sep 13, 2026  
Project Manager - BMS (contract)
BMS PROJECT MANAGER (Contract) London (hybrid/flexible) | 6-12 months | £400-£500 per day (Outside IR35) We're working with a prestigious client in the building controls industry who are looking for an experienced BMS (building management systems) Project Manager to oversee a range of small to large-scale projects across London and the surrounding areas. This is a great opportunity for someone with strong BMS expertise who enjoys leading projects from start to finish, ensuring quality, budget and timescales are consistently achieved. What you'll be doing: Leading contract meetings and managing project status from handover through to completion Working closely with customers to understand and deliver site-specific requirements Providing technical guidance to clients and colleagues across BMS projects Managing budgets, supplier orders and ensuring efficient project cash flow Designing control strategies, point lists and system descriptions for commissioning teams Staying up...
IR35 Status:
Outside IR35

CV-Library City of London, London Contractor
CL
Sep 12, 2026  
Digital Construction Manager
Canary Wharf, London | £300-£360 per day | Outside IR35 | 6-Month Contract We're looking for a Digital Construction Manager to join a main contractor on a major, long-term commercial fit-out and refurbishment project in Canary Wharf. The role will initially be hands-on, covering Revit modelling, overlays and model data validation, before developing into a management position overseeing trade coordination and Stage 5 design. It's particularly well suited to an experienced CAD / BIM Coordinator ready to step up into Digital Construction Management. What you'll be doing Producing and reviewing models using Autodesk Revit Supporting BIM coordination and model overlays Validating model data and digital information Coordinating MEP and wider trade packages Supporting Stage 5 design delivery Progressing into oversight of trade coordination and digital construction activitiesWhat we're looking for Strong Autodesk Revit and AEC suite experience Previous BIM / CAD coordination...
IR35 Status:
Outside IR35

CV-Library City of London, London Contractor
CL
Sep 17, 2026  
Senior Electrical Design Engineer
Senior Electrical Design Engineer UK Nationals Only (UK Defence Contract) Circa £400/day Ltd (outside IR35)   Join us as a Senior Electrical Engineer on an exciting major projects (Hospitals, Military, Data Centres, Prisons) You'll play a key role in delivering multiple electrical aspects across power engineering led projects consisting of High Voltage, Low Voltage, Generation, Fire Alarms, Security, Lighting etc..  This is an opportunity to work collaboratively with our design partners and supply chain to create innovative solutions that meet our client's requirements whilst maintaining the highest health, safety, and environmental standards. What will you be responsible for? As a Senior Electrical Engineer, you'll be working within the Design/ Delivery team, supporting them in delivering integrated electrical engineering solutions from inception to completion. Your day to day will include: Leading electrical engineering delivery for multiple schemes, collaborating with Tier 2...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Sep 17, 2026  
Structural Engineer
Structural Engineer - Data Centres London | £39-£44 per hour | Outside IR35 | 6-Month Contract We're looking for an experienced Structural Engineer to support the delivery of a major data centre project, with a project pipeline expected to run for around 2 years. You'll need strong structural design experience and be proficient in Tekla Structural Designer. Previous data centre experience is ideal, although Engineers from large-scale industrial or similarly complex projects will also be considered. What you'll be doing Delivering structural design for a major data centre project Producing and developing designs using Tekla Structural Designer Supporting detailed structural engineering and project delivery Coordinating with wider engineering and design teams Reviewing technical information and resolving design issues Supporting the project as it progresses through deliveryWhat we're looking for Strong Structural Engineering experience Tekla Structural Designer proficiency -...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Sep 13, 2026  
SCADA/Controls Engineer (Remote)
SCADA & Controls Engineer – EMEA Delivery Location: Remote – EMEA Contract: 9–12 Months Sector: Renewable Energy / Battery Energy Storage Recruitment Partner: Spencer Ogden Outside IR35 The Opportunity Spencer Ogden is supporting a leading organisation within the renewable energy and battery energy storage sector in the search for an experienced SCADA & Controls Engineer to join their EMEA Delivery team. This is an excellent opportunity to work on utility-scale Battery Energy Storage System (BESS) projects, with responsibility for SCADA, controls engineering, grid integration, communications, testing and project delivery across EMEA. You will play a key role in developing and implementing SCADA and controls solutions, integrating BESS control systems with Transmission System Operator (TSO) Energy Management Systems (EMS), and ensuring projects meet technical, operational and grid compliance requirements. Key Responsibilities Lead the delivery of project-specific...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Sep 12, 2026  
Assistant Site Manager
We're looking for an experienced Assistant Site Manager to support the delivery of works at a 400kV substation. You'll work closely with the Site Manager, providing SR163 cover when required and supervising site teams and subcontractors to ensure works are delivered safely, efficiently and to programme. What you'll be doing Supporting the Site Manager across daily substation activities Providing SR163 cover when the Site Manager is off site Supervising subcontractors and monitoring site progress Ensuring compliance with CDM regulations and Safe Systems of Work Setting teams to work and monitoring activities through completion Issuing Permits to Dig and supporting site safety procedures Maintaining quality standards and supporting as-built informationWhat we're looking for Previous experience on HV / EHV substation projects Strong site supervision or management experience Knowledge of CDM regulations Experience implementing Safe Systems of Work Confident supervising...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Sep 10, 2026  
Senior Machine Learning Engineer
Senior Machine Learning Engineer Location: London Hybrid | Salary: £60-£80ph – Outside IR35 Hexwired Recruitment has partnered with an innovative AI technology company developing next-generation machine learning solutions for complex real-world applications. Due to continued growth, they are looking for a Senior Machine Learning Engineer to join their expanding team in London. Required Experience * Strong C++ development skills. * Experience with CUDA for GPU acceleration. * Python and PyTorch experience. * Knowledge of Transformers, computer vision or image analysis. * Postgraduate or commercial experience within AI/Machine Learning This is an exciting opportunity to work on cutting-edge AI research, developing advanced machine learning technologies that will directly influence innovative real-world products. You'll work alongside a highly skilled team, solving complex technical challenges and shaping the future of AI systems. The company are rapidly expanding and are at...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Sep 08, 2026  
BMS Service Engineer
BMS Service Engineer Contract 3 – 6 months London & M25 We are offering an accomplished BMS Service Engineer £38 - 45 per hour (outside IR35) to join a well-established Controls company on a contract to cover London and the M25 area. This is an initial 3 – 6 month contract with potential to extend further. The BMS Service Engineer position:- As a BMS Service Engineer, you will need to demonstrate exceptional technical understanding of BMS, in particular Trend control systems.   Your duties will include carrying out service and maintenance on BMS Control systems along with small works.  You will be expected to work independently using your own skill and initiative as well as part of a larger team of engineers when required. Key skills of the BMS Service Engineer:- Exceptional technical knowledge and experience of the BMS sector. Proven experience of carrying out servicing and small works on BMS Controls Systems. Qualifications and experience with Trend control systems....
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Sep 08, 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
Sep 08, 2026  
BMS Commissioning Engineer
We have a fantastic contract opportunity for an experienced BMS Commissioning Engineer to join an exciting project in London. On offer is an initial 3 to 6  month contract (with the potential to extend), £300 - £340 per day (outside IR35), and the opportunity to work for a successful BMS integration business. The BMS Commissioning Engineer position: - As a BMS Commissioning Engineer, you will have fantastic experience and knowledge of commissioning Building Management Systems, in particular Trend and Tridium systems.  You will be required to perform software modifications, writing, and generating graphics, working alongside a team engineers. Key skills of the BMS Commissioning Engineer: - Exceptional technical knowledge and experience of the BMS sector. Proven experience commissioning BMS systems Qualifications and experience with Trend and Tridium or Delta Ability to write and manipulate software and graphics. CSCS Skill card or equivalent Benefits of the BMS Commissioning...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Sep 08, 2026  
BMS Commissioning Engineer
BMS Commissioning Engineer, Cylon or Tridium London £330 to £400 per day, Weekly pay Our client requires an accomplished BMS (Building Management Systems) Commissioning Engineer with Cylon Controls (or Tridium) experience to work on a major prestigious project in Central London. The work will involve the commissioning of Fan Coils Units using Cylon Controls, with on-going major plant commissioning works available thereafter. This contract will initially run for 6 months, however opportunity for extension and to join exciting projects in the future will be available for the right candidate. Role Profile The successful applicant for this BMS Commissioning Engineer role will need to have experience of using Cylon or Tridium controls to commission Fan Coil Units and major plant Key skills required:- * Experienced in the Commissioning of Building Management Systems (BMS) * Qualified and experienced with Cylon or Tridium Control systems. * CSCS Skill Card or equivalent. £330 - £400...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Sep 08, 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
Sep 08, 2026  
BMS Project Manager
We have a fantastic contract opportunity for an experienced BMS Project Manager to join an exciting project in London. On offer for the successful BMS Project Manager is a 12 month contract, £350 - £450 per day, and the opportunity to work for a successful BMS intelligent integration business. The BMS Project Manager role:- As a BMS Project Manager, you will be a highly skilled, professional and driven individual who has a wealth of knowledge and background in the BMS sector. You will be required to liaise confidently and positively with the client delivering a fantastic service, attending progress meetings, managing sub-contractors, commissioning engineers, and covering all aspects of project management. To apply you must have a proven track record of managing large BMS projects. Key Skills required of BMS Project Manager:- * Exceptional knowledge and background in the BMS industry. * Proven track record of managing large BMS projects, all aspects. * Strong commercial and...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Sep 04, 2026  
Electrical Engineer
Electrical Engineer (12-Month Fixed-Term Contract) Location: London (Hybrid – 2 days in the office, 3 days working from home) Rate: £50-55 per hour - outside IR35 Limited Company! We are seeking an experienced Electrical Engineer to join a specialist engineering team on a 12-month fixed-term contract with hydrid working available. This is an excellent opportunity to work on technically challenging single point mooring (SPM) projects supporting FPSO and FSO facilities within the oil & gas sector. Working as part of a multidisciplinary team, you will be responsible for delivering high-quality electrical engineering documentation, supporting vendors and site teams, and ensuring compliance with industry standards. Key Responsibilities * Prepare and review Ex equipment datasheets. * Develop and maintain electrical load lists. * Perform cable sizing and voltage drop calculations. * Prepare and review specifications for electrical equipment and LV...
IR35 Status:
Outside IR35

CV-Library Southwark, Greater London Contractor
CL
Aug 02, 2026  
Mechanical Construction Manager
My client requires a Mechanical experienced Construction Manager for a long term role (2 + Years) in Uxbridge on the delivery of a large scale infrastructure project. Paying £(Apply online only) a shift + Outside IR35 + Weekly Payments + Long Term Works (2 + years) The position will require you to assist the Project Manager managing the sub contractors deliver large scale Mechanical packages. This is a long term contract role and would suit someone who has extensive experience covering the following: * Delivery of Mechanical packages of work * Reporting into the Senior Project Manager * Forming close links with the client’s representatives and their teams at a senior level. * Attending site meetings, liaising with clients and subcontractors * Promote a positive health and safety culture across the project & workforce * Managing any changes that occur throughout the project * Can work well under pressure in a fast-paced environment * A strong...
IR35 Status:
Outside IR35

CV-Library Hillingdon, Greater London Contractor
CL
Sep 11, 2026  
PLC Controls Engineer - Contract
PLC Controls Engineer – Contract | Dagenham We are currently recruiting 2 experienced PLC Controls Engineers for a major industrial automation and automotive manufacturing project in Dagenham. This is a hands-on commissioning role suited to engineers who are confident working independently in a live manufacturing environment, diagnosing faults, modifying PLC software and bringing automated production equipment online. Role Details Position: PLC Controls Engineer – Contractor Location: Dagenham Rate: £40-£50ph (Outside IR35) Working Hours: Monday–Friday, 07:30–16:00 Contract: Contractor position Vacancies: 2 The Role You will be supporting a major automotive automation project, working directly on production-line equipment and automated stations. The role will involve a combination of PLC programming, software modification, fault-finding and live factory commissioning. Candidates should be comfortable working under pressure and able to quickly diagnose issues between PLC logic...
IR35 Status:
Outside IR35

CV-Library Dagenham, UK Contractor
CL
Sep 11, 2026  
Commissioning Engineer - Contract
Commissioning Engineer – Schneider PLC | Dagenham | Contract Location: Dagenham, Essex Contract Type: Contractor Working Hours: Monday–Friday, 07:30–16:00 Rate: £40 - £50 (Outside IR35) Weekend Support: Approximately two weekends per month The Role We are looking for an experienced Commissioning Engineer to support an automated manufacturing project in Dagenham. This is a hands-on role combining basic PLC software development, commissioning, fault finding and production-line support. The successful contractor will work with Schneider Electric PLC systems, making software modifications and supporting the implementation and testing of changes on an operational production line. Key Skills Required Strong experience with Schneider Electric PLCs Proven experience with PL7 Experience with Unity Pro / EcoStruxure Control Expert Ability to make basic PLC software modifications and developments Strong commissioning and fault-finding experience Comfortable working directly on...
IR35 Status:
Outside IR35

CV-Library Dagenham, UK Contractor
CL
Sep 18, 2026  
Project HSE Manager
Project HSE Manager - £750 per Day £750 per day | Outside IR35 | Contract | Kingston, London ARM is recruiting an experienced Project HSE Manager to join a major Oil & Gas, energy and engineering project based in Kingston. This is an excellent opportunity for a senior HSE professional to lead HSE activities across the engineering and development phases of an EPIC project. Key Responsibilities Lead the Project HSE Management System throughout the EPIC phases. Act as the project HSE focal point and advise Project Management. Develop and coordinate the HSE team. Interface with Clients and manage HSE contractual requirements. Lead HAZOP, HAZID, risk assessments and risk management activities. Lead accident and incident investigations. Establish HSE monitoring and audit programmes. Manage subcontractor HSE performance. Support environmental management activities. Ensure compliance with UK HSE legislation, CDM, ISO and IOGP standards. Lead project HSE reviews and close-out...
IR35 Status:
Outside IR35

CV-Library Kingston upon Thames, London Contractor
CL
Aug 28, 2026  
Electrical Design Engineer
Electrical Design Engineer Contract | Outside IR35 | £45/hour Location: Hertfordshire - On-site initially, then hybrid working is a possibilty. *** UK residents only and must have full right to work in the UK without sponsorship *** An long term contratct opportunity has arisen for an experienced Electrical Design Engineer to join an innovative engineering team delivering complex industrial equipment. This is a hands-on contract role focused on producing high-quality electrical designs for new product development. The Role * Produce detailed electrical designs using AutoCAD Electrical and EPLAN. * Develop electrical schematics, control panel layouts and wiring documentation for industrial machinery. * Create and maintain Bills of Materials (BoMs) and support electrical testing, build and commissioning activities. Key Responsibilities * Design AC/DC power distribution and machine control systems. * Develop machinery safety circuits and associated technical...
IR35 Status:
Outside IR35

CV-Library SG6, Norton, Hertfordshire Contractor
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