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Contractor 38
Outside IR35 Welwyn Garden City construction

38 construction jobs found in Welwyn Garden City

CL
Feb 20, 2026  
Construction Buyer
Construction Buyer Stevenage Contract - 12 Months (2 Days a week onsite) Salary £40.00 per hour Umbrella ARM has an exciting opportunity for a Construction Buyer to join a fast paced team at a Global Defence Company. The Role: Manage suppliers and where necessary build up longer term supplier management expectations Build strong relationships with suppliers in order to meet Internal Customer requirements effectively. Build strong relationships with FM, Security & SHE Team in order to support their requirements and needs Actively support functional excellence programmes, identifying areas for improvement where new processes may be required Lead low value/low complexity negotiations with suppliers to optimise cost, delivery and quality of products Requirements: Significant practical experience, vocational or academic qualifications Strong team and communication skills Good written, verbal and presentation skills Good negotiation skills Proactive approach /...
IR35 Status:
Outside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Feb 22, 2026  
Quantity Surveyor Construction
Freelance Quantity Surveyor - On site Central London (Near Old Street) - Immediate start - 8+ months contract - Outside IR35. Tradeline are actively seeking a Quantity Surveyor who is able to complete an 8 month contract based on site near Old Street, Central London. You will be required to carry out a forensic review of the project costings and deliver excellent commercial skills including CVR's and Final Accounts. Reporting into a Commercial Manager and working within a team of 5, you will be involved in delivering an extensive cost management service on the project. The role would suit an experienced Quantity Surveyor who has had experience in build projects, excellent negotiation skills and working within a high pressurised environment. There will also be aspects of troubleshooting, so experience dealing with problematic construction projects would be desirable
IR35 Status:
Outside IR35

CV-Library Hackney, Greater London Contractor
CL
Feb 15, 2026  
Materials Buyer (Construction)
Freelance Materials Buyer – Maidstone, Kent (6–9 Months) A new freelance opportunity has just opened up with one of the UK’s leading housebuilders, based in Maidstone, Kent.  They’re heading into a busy period and need an experienced Materials Buyer to support the team across multiple live residential schemes. Position:  Buyer (Materials) Contract type:  Freelance / Temporary Duration:  6 - 9 months Payment type:  PAYE, PAYE Umbrella or Limited company outside of IR35 Day rate:  £ negotatiable and dependant on payment method chosen. Location:  Maidstone, Kent Skilled Careers contact:  Mark Dixon (Maidstone branch) The Company This is a well-established, highly regarded housebuilder with around 10 live sites across the South East and a strong pipeline of new developments starting in 2026. It’s a busy, fast-paced environment with solid systems and experienced teams in place. The Role You’ll be joining a team of three Buyers, reporting directly to the Senior Buyer,...
IR35 Status:
Outside IR35

CV-Library Knightrider St, Maidstone ME15 6LU, UK Contractor
CL
Feb 22, 2026  
M&E Manager
M&E Manager – HV Substation (Wymondley, SG4) Location: Wymondley 400kV Substation, Hertfordshire Rate: £500 per day (subject to review when stepping into SR163 Site Manager role) Contract Type: Full-time, site-based, contract Duration: 6-month (part of an 18-month programme - high probability of extension) Hours: Monday to Friday, 10-hour days with occasional weekends IR35 Status: Outside IR35 MRR Infrastructure is supporting the delivery of a major 400kV substation build as part of the UK’s National Grid transmission infrastructure. This global engineering-led consultancy is a key delivery partner across multiple National Grid frameworks, known for its safety-first approach and commitment to technical quality. We are seeking an experienced M&E Manager to lead the mechanical and electrical workstreams on site. This position will initially support the Site Manager in day-to-day delivery and supervision, with the expectation to step into the SR163 Site Manager role as the...
IR35 Status:
Outside IR35

CV-Library SG4, Redcoats Green, Hertfordshire Contractor
CL
Feb 22, 2026  
Project Manager, Waste Water
Project Manager, Waste Water Infrastructure & Civil Engineering Bishop's Stortford, CM22 Start: ASAP 6 months work Rate: £450 to £550 outside of IR35 Hybrid work, on site 2/3 days a week, 2 days working from home/office Job Ref: #(phone number removed) We urgently need a Project Manager for a Civil Engineering and Waste Water Infrastructure site in Bishop's Stortford. Working on site a few day per week, the rest can be from home or in the office. We need someone who has: - SMSTS - CSCS Black or Gold - 3 day first aid - EUSR Water - EUSR 1 & 2 - Thames Water Passport Running the programme, project planning and execution, including timelines, resourcing, budgets, risk management and critical path delivery. Manage stakeholders, the general public, local authorities, and the client Manage change Work with the commercial team to manage variations, Inform the client of risk and perform risk management Help with engineering problems Manage procurement...
IR35 Status:
Outside IR35

CV-Library Bishop's Stortford, Hertfordshire 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 20, 2026  
Site Manager
Freelance Site Manager Location: City of London Rate: £280 per day (Outside IR35) We are working with a specialist contractor delivering a fast-paced interior fit-out project in London. They are seeking a freelance Site Manager to take control of the site for a fixed 14-week contract starting in February. This role requires someone who is organised, proactive, and confident running a site independently while maintaining programme, quality, and health and safety standards. Key Responsibilities Day-to-day management of the site, ensuring works are delivered in line with drawings and programme Coordinating subcontractors and organising daily and weekly workloads Managing internal fit-out works and ensuring quality standards are maintained throughout Monitoring progress against the programme and addressing issues early to avoid delays Raising and managing RFIs and ensuring queries are resolved promptly Ensuring all operatives have the correct, up-to-date drawings and understand...
IR35 Status:
Outside IR35

CV-Library City of London, London Contractor
CL
Feb 19, 2026  
Senior Technical Engineer
On behalf of FCDO, we are looking for a Senior Technical Engineer Outside IR35 on a 12 months contract based Hybrid 2-3 days a week in London The Foreign, Commonwealth & Development Office (FCDO) pursues our national interests and projects the UK as a force for good in the world. We promote the interests of British citizens, safeguard the UK's security, defend our values, reduce poverty, and tackle global challenges with our international partners. DV Clearance is an essential requirement for this role, as a minimum you must be willing & eligible to undergo checks. Please note, due to the exceptional requirements of this position (short-term nature of this role and speed at which we require a postholder in situ) preference may be given to candidates who meet all of the essential criteria and hold active security clearance. As a Senior Technical Engineer , your main responsibilities will be to: * As part of the OED Overseas Maintenance Strategy, support the...
IR35 Status:
Outside IR35

CV-Library City of London, London Contractor
CL
Jan 21, 2026  
Senior Electrical Design Engineer
Great opportunity to work with this leading international Consulting Engineers who are looking to bring on board a driven and experienced Senior Electrical Design Engineer, Outside IR35, to be an active part of a specialist design team consultancy to work on a variety of Data Centre projects. Key Responsibilities:- Create electrical design drawings and specs for Data Centre Projects. Ensure designs meet all standards and regulations. Support sustainable design and use of innovative tech Work closely with colleagues, clients, architects, and contractors.. Manage project deadlines, budgets, and deliverables. About you: You should hold Degree (or historic equivalent) in Electrical Engineering or related field.- Should have extensive experience in Mission Critical design and building services design, specifically on data centres.- Skilled in Amtech, and Dialux/Relux, with AutoCAD and Revit proficiency being beneficial. Sound knowledge of British Standards and building...
IR35 Status:
Outside IR35

CV-Library City of London, London Contractor
CL
Dec 11, 2025  
Senior Electrical Design Engineers
Great opportunity with a market leader to join their mission critical team working on key long term projects within the DC space - both hyper scale and co-lo. They are a global player with an outstanding market leader with a great pipeline of future work They are looking for experienced senior/ principal or associate level design engineers to join them or a long term basis working on a hybrid or semi-remote basis (by agreement) You should have current and developed experience as an electrical design engineer within the building services space and also with the mission critical / data centre space. Excellent rates and position 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
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
Oct 31, 2025  
Senior Electrical Design Engineer
Great opportunity to work with this leading international Consulting Engineers who are looking to bring on board a driven and experienced Senior Electrical Design Engineer, Outside IR35, to be an active part of a specialist design team consultancy to work on a variety of Data Centre projects. Key Responsibilities:- Create electrical design drawings and specs for Data Centre Projects. Ensure designs meet all standards and regulations. Support sustainable design and use of innovative tech Work closely with colleagues, clients, architects, and contractors.. Manage project deadlines, budgets, and deliverables. About you: You should hold Degree (or historic equivalent) in Electrical Engineering or related field.- Should have extensive experience in Mission Critical design and building services design, specifically on data centres.- Skilled in Amtech, and Dialux/Relux, with AutoCAD and Revit proficiency being beneficial. Sound knowledge of British Standards and building...
IR35 Status:
Outside IR35

CV-Library City of London, London Contractor
CL
Feb 22, 2026  
Project Planner - ASTA
Project Planner – Outside IR35 18-Month Contract | Large-Scale M&E Data Centre Projects JL Renewable Solutions is working in partnership with a new and exciting client to appoint an experienced Project Planner on an exclusive Outside IR35 contract. This is a long-term opportunity working on major M&E data centre projects, offering stability, technical challenge, and involvement in large-scale infrastructure programmes. The Role As Project Planner, you will be responsible for developing, managing and maintaining project programmes across complex M&E works. You’ll work closely with project teams to ensure accurate planning, progress reporting and effective programme control. Key Requirements * Proven experience as a Project Planner within M&E / Building Services * Strong working knowledge of ASTA Powerproject (essential) * Exposure to Primavera P6 (beneficial but not essential) * Experience working on large-scale data centre...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Feb 20, 2026  
Electrical Site Manager
Electrical Site Manager 3 month contract London £400 per day (OUTSIDE IR35) Grenn Scout have engaged exclusively with Industry leader withing the Energy division, who provide solutions across private networks, renewable energy, battery energy storage solutions (BESS), data centres, HVDC and electric vehicle charging infrastructure. Due to continued success winning multiple new projects, they require an Electrical Site Manager on an initial 3 month contract. Ideally you will have previous experience with Battery Energy Storage Systems or Commercial EV Charging Points. Key Responsibilities * Day-to-day management of electrical works on site * Ability to read drawings * Managing labour, subcontractors, and materials * Coordinating with the main contractors * Ensuring works are delivered safely, on programme, and to a high standard * Maintaining site documentation and quality control If you are interested in applying, please apply online
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Feb 19, 2026  
Electrical Commissioning Manager
I am looking for an experienced Electrical Commissioning Manager to join my client, a well-established Commissioning Consultancy who are looking to bring someone new into the team. This is an ongoing freelance role where you will be assessed for outside of IR35. The selected candidates will come from either a rail, infrastructure, commerical or residential background but have the right attitude to help build a business around them whilst working on both exciting and challenging projects. I am looking for someone who has worked in this capacity for a long time and keen to manage a large project with a tier 1 contractor as the client. Roles and responsibilities: Develop and manage the Commissioning Plan and testing scripts to ensure they align with the project's specific technical requirements and the contractor's master schedule. Witness and formally sign off on all Factory and Site Acceptance Testing (FAT/SAT) for critical infrastructure equipment like HV/LV switchgear and...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Feb 18, 2026  
Senior Landscape Architect
Senior / Associate Landscape Architect (CMLI) London / Alton / Remote Our client is an award-winning, design-led landscape architecture practice working across a diverse range of high-quality projects throughout the UK. Known for their thoughtful, collaborative approach and strong planning expertise, they are now looking to appoint a Senior or Associate Landscape Architect (CMLI) to join their growing team. This opportunity is available either on an Outside IR35 contract basis or as a permanent position, offering flexibility to suit your career goals. The Role You will play a key role in delivering landscape-led solutions across planning and design stages, with particular responsibility for: Producing high-quality LVIA reports and supporting landscape planning submissions. Applying in-depth knowledge of landscape planning policy and assessment. Leading projects and contributing strategically at senior or associate level. Collaborating closely with clients, consultants,...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Feb 14, 2026  
BMS Commissioning Engineer
BMS Commissioning Engineer Contract We have a fantastic contract opportunity for an experienced Tridium BMS Commissioning Engineer to join an exciting and prestigious project in London. On offer is an initial 6 month contract (with the potential to extend), c£40 - £48 per hour, and the opportunity to work on one of London’s most interesting new projects in central London The BMS Commissioning Engineer position:- As a BMS Commissioning Engineer, you will have fantastic experience and knowledge of commissioning Building Management Systems, in particular Tridium Niagara.  You will be required to perform software modifications and full commissioning. The project is in central London and is a very prestigious refurbishment of a historical building. The project is a mixed use development incorporating a hotel, high end luxury residences, and shops and will be using state of the art new smart building technology. Key skills of the BMS Commissioning Engineer:- Exceptional technical...
IR35 Status:
Outside IR35

CV-Library London, UK Contractor
CL
Feb 13, 2026  
Senior HVAC Design Engineer
We are looking for an experienced Senior HVAC Design Engineer, in our London office of our Client, focusing on the Commercial sector witin their experienced team. You will have the opportunity to work on some of the most exciting and technically challenges projects within this fast paced sector. Our award winning international Client are currently involved in numerous projects, working both within the UK and across EMEA. Candidates will support the team in developing designs for mechanical distribution systems from CHW, HVAC, Fuel to LTHW Provide advice to clients regarding mechanical systems/requirements available to meet their business needs. Leading the design of Commercial Project mechanical systems and equipment (Building Services) Provide written reports of system options in the form of design development notes. Produce technical specifications for mechanical systems, ensuring compliance with relevant standards and client requirements Ensure coordination other...
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
Jan 14, 2026  
REVIT MEP Technician
We are working with a thriving London office of an Global MEP Consulting engineers. They are looking for an experienced MEP REVIT technician to join them on an on going contract based in their Central London offices This is an on-going requirement outside IR35 Candidates should have three years plus specific REVIT MEP experience working either for a Consulting Enginers/ Contractor or REVIT Bureau 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 London, UK Contractor
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