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Contractor 41
Engineering Inside IR35 Watford

41 jobs found in Watford

CL
Feb 28, 2026  
Civil Technical Engineering Manager (Ancillary Works)
Job Title Civil Technical Engineering Manager - Ancillary Works Location: London or Bristol (hybrid working), with regular travel to the Sizewell C site in Suffolk Contract: Inside IR35, ongoing Closing Date: 17 February 2026 ________________________________________ Job Purpose / Overview The Engineering & Technical (E&T) function is a fundamental part of the Civil Works Programme, responsible for defining and assuring the design, engineering, and technical requirements across the project. The team leads the full lifecycle of design delivery-from requirements definition through to final acceptance-while managing budgets, resources, and supply chain interfaces. It also ensures constructability and effective design coordination across Civil Works, Site Establishment, and Off-Site Infrastructure. As Civil Technical Engineering Manager - Ancillary Works, you will support the definition and validation of technical requirements and specifications, working closely with...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Feb 08, 2026  
Welder
Welder - Rolling Stock £39.24 per hour (Umbrella - Inside IR35) | Contract | Acton MON-FRI | 7AM-3:15PM | EARLY FINISH FRIDAYS Ceto Talent is recruiting a Welder - Rolling Stock for a major London transport authority to help maintain the fleet of underground trains. This is a full-time onsite position working on critical rolling stock maintenance. What We're Looking For The ideal Welder - Rolling Stock will bring: * Essential: Aluminium TIG and MIG welding experience * Apprentice trained or Level 3 qualified in welding * Ability to pass and maintain welding codings (essential for continued employment) * Proven experience in welding and fabrication * Understanding of safe working practices and compliance About the Role This Welder - Rolling Stock contract offers the opportunity to work on underground rolling stock maintenance, ensuring London's tube trains keep moving. You'll be working onsite at the Acton facility, carrying out aluminium TIG and MIG welding on...
IR35 Status:
Inside IR35

CV-Library South Acton, Greater London Contractor
CL
Feb 22, 2026  
Site Agent - Civils and Infrastructure
Site Agent - Civils (Heathrow Airport) 📍 Heathrow Airport 💼 Freelance / Contract 💷 Circa £500/day - Inside IR35 TRIbuild Solutions isare recruiting an experienced Site Agent from a civil engineering background to support a multi-faceted infrastructure package at Heathrow Airport. This is a hands-on role working across a range of complex civils activities within a live, highly regulated airport environment. Scope of Works Includes: Drainage Tunnel cladding / structural concrete works General civils & infrastructure packages Coordination of subcontractors and direct labour Temporary works, RAMS, permits & ITPs Daily site management, progress tracking and H&S compliance Key Requirements: Strong background as a Site Agent on civils projects Degree qualified background preferred Proven experience with drainage and structural / tunnel-related works Comfortable working in live or highly controlled environments SMSTS, CSCS (Black/Gold preferred) Excellent...
IR35 Status:
Inside IR35

CV-Library Feltham, London Contractor
CL
Feb 28, 2026  
Principal Software Engineer
Contract Software Engineer (Ada) – Real-Time Embedded Location: Luton (Hybrid – ~4 days on-site) Contract Length: 12 months IR35: Inside IR35 Rate: £57.72 p/h PAYE (£66.11p/h inc. holiday rate) OR £78.70 p/h Umbrella We seek an engineer with recent high-integrity or safety-critical industry experience (defence, aerospace, or similar), or eligible for UK security clearance. The Opportunity We’re looking for an experienced real-time embedded Ada engineer to work on mission-critical defensive systems within a highly technical electronic warfare environment. This is a hands-on role developing, integrating, and testing high-integrity software that directly supports operational capability. You’ll be trusted with complex problems, work closely with systems, hardware, and firmware teams, and play a key role across the full software lifecycle. What You’ll Do Design, develop, debug, and test real-time embedded software in Ada Own complex work packages from requirements through...
IR35 Status:
Inside IR35

CV-Library Luton, UK Contractor
CL
Feb 27, 2026  
System Engineer
Copello is recruiting for Systems Engineers to support a defence communications programme currently progressing between Critical Design Review (CDR) and qualification maturity on a contract basis. The successful candidates will be capable of leading and delivering individual sub-system work packages, while also contributing hands-on engineering effort to ensure timely completion of design, integration, and qualification activities. Key Responsibilities * Lead and execute assigned sub-system elements from post-CDR through to qualification readiness. * Own technical work packages, ensuring delivery to cost, schedule, and quality targets. * Contribute to overall system integration, ensuring coherent end-to-end solutions. Experience in one or more of the following areas is required across the team: * Datalinks * Integration of COTS datalink solutions * Repackaging activities including thermal management (e.g. heaters), environmental considerations, and...
IR35 Status:
Inside IR35

CV-Library High Wycombe, Buckinghamshire Contractor
CL
Mar 01, 2026  
Break Fix Engineer
We are recruiting for a Break Fix Engineer for a leading IT Service provider based in London (EC1) The role: Break fix server engineer working on HP, Dell and IBM servers, Server provisioning, Rack, stack and configure servers. Support Trainee DC Engineers when required. Troubleshoot hardware faults and arrange replacements. Install and decommission redundant equipment. Provide expert hardware support. Responsible for proactive updating of customer and resolution of service. Co-operate and work closely with all members of the support team to ensure efficient, productive and high quality technical support and customer service to customers within the live Data Centre. Liaise with onsite support engineers and within other sites. Manage all incoming calls, emails to the data centre support function. Liaise with third party suppliers to report and escalate customer problems. Respond to customers within agreed SLA. Follow escalation processes; tickets to support management and other...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Mar 04, 2026  
Technology Estimator/Cost Manager
We are seeking an experienced and highly capable Technology Estimator/Cost Manager to support the delivery of technology-enabled transport and transport-related services across a range of major projects around London. This is an excellent opportunity for a commercially minded professional with a strong background in cost management, estimating, or commercial management within transport, smart mobility, or technology-led infrastructure environments. This position is a full-time position that falls Inside IR35. You will be based in London at least 3 days per week.   This role is focused on the costing and commercial management of transport technology and systems rather than traditional civil engineering or signalling works. You will be involved in projects such as:   ·Communications systems for London Underground and bus networks ·Road User Charging and tolling services ·Revenue collection and ticketing systems ·Control rooms, data systems, and digital transport infrastructure...
IR35 Status:
Inside IR35

CV-Library Central London, London WC2N 5DU, UK Contractor
CL
Mar 04, 2026  
Mechanical Design Engineer (Military Packaging Design)
World Class Defence Organisation is currently looking to recruit a Mechanical Design Engineer (Military Packaging Design) subcontractors on an initial 12 month contract. This role would suit a Mechanical Design Engineer who comes from a strong Defence or Aerospace background has strong Creo / PRO-E skills.         Job Title:  Mechanical Design Engineer Rate: £50.00 per hour Location: Stevenage Hybrid / Remote working: Hybrid, 2-3 days min on site. Although this can change due to workload. Can be continually reviewed. Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella) Mechanical Design Engineer - Military Packaging Design Job Description: An opportunity to become part of Europe’s No. 1 Missile Systems Designer, as a Mechanical Design Engineer. You will work closely with other functional teams, to develop...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Mar 04, 2026  
Principal Structural Engineer
World Class Defence Organisation based in Stevenage, Hertfordshire is currently looking to recruit a Principal Structural Engineer subcontractor on an initial 12 month contract, with very likely extension.  The role will be onsite 4 days per week.     Candidates with a FE / FEA background ( Structural Engineer / Structural Analysis / Stress Engineer ) ideally from the Defence / Aerospace industry would be suitable for this position. Rate: £50.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage Hybrid / Remote working: The role will be onsite 4 days per week.  a 4-Day week of Monday to Thursday is possible. Duration: 12 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella) Interview process: One stage video interview   Principal Structural Engineer Job Description: The Mechanical Analysis Group are looking for a Principal...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Mar 04, 2026  
Principal Structural Engineer
On behalf of our client, we are seeking to recruit a Principal Structural Engineer on an initial 12-month contract. As the Principal Structural Engineer, you will play a key role in delivering high-quality structural analysis across a range of advanced defence systems, supporting design development and ensuring compliance with critical structural requirements. Role: Principal Structural Engineer Pay: £50 per hour Via Umbrella Location: Stevenage Contract: Monday- Friday, 37 Hours per week, 12 Months Contract IR35 Status: Inside Security Clearance: SC Required before starting Responsibilities Perform and lead structural analysis using hand calculations and Finite Element methods. Provide technical expertise across static, dynamic, fatigue, and crash analysis. Develop and optimise FE models to support and improve design solutions. Deliver rapid structural assessments to support efficient design progression. Communicate analysis results clearly to influence design and...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Mar 04, 2026  
Mechanical Design Engineer
6 Month Contract (initially) Up to £50 per hour umbrella (Inside IR35) Circa 4 days per week on site (could be some flex on this week to week) Job Role: You will work closely with other functional teams, to develop products to meet our customer’s needs. Within this role you will have the opportunity to work as part of a multi-disciplinary team to perform a range of engineering activities including progressing developmental designs into production environments and working with suppliers on technical queries. Key Responsibilities: Carry out Mechanical Design and proving activities as part of a wider team for prime and variant products, of both piece parts and assemblies. Support/liaise with manufacturing, resolving manufacturing problems & defects. Support to functional & environmental testing and trials. Liaise with suppliers/purchasing to resolve any technical queries that may arise. Planning and reporting on own day-to-day activities to meet project milestones. Gain...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Mar 04, 2026  
RF Design Engineer
Job Title Senior RF Electronics Design Engineer Location Onsite UK Contract Details 12 month contract £75 per hour Inside IR35 Overview A leading engineering organisation operating in the defence and advanced communications sector is seeking a Senior RF Electronics Design Engineer to take technical ownership of complex RF electronics designs. This role sits at the heart of a multi discipline development environment and requires someone who is genuinely hands on across design, test and verification. You will act as the design lead for specific RF electronics assemblies, working closely with system, software, mechanical and production teams to ensure successful integration and delivery. Key Responsibilities Technical ownership of assigned RF electronics designs from concept through to delivery. Hands on design, test, validation and proving of RF electronics hardware. Effective interface management with system stakeholders, design authorities and cross functional...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Mar 04, 2026  
Principal Mechanical Design Engineer
Principal Mechanical Design Engineer JOB LOCATION: STEVENAGE OR BRISTOL SECURITY: SC - Potential BPSS start (UKEO) DURATION: 6+ Months (Extension Possible if Meeting Expectations) TYPE: Contract WORK PATTERN: 4 days a week on site; 1 remote (flexible over start/finish time). PAY RATE: £ 50 /hr (Umbrella Inside IR35) Essential QUALIFICATIONS Beneficial- HND or HNC in Mech Engineering TARGET INDUSTRIES AND COMPANIES. Is Defence a must? If not what industries can be considered * Preferable for Def/Aero; if hitting the skills on JD, open to others; automotive, oil & gas etc. Essential Skillset & Tools * Experience using Creo 3D design tool Essential- Knowledge of the following: * Manufacturing processes * Tolerance studies * Mass property calculations * Material selection * FMEA * Design for Manufacture/Assembly * Structural design * Product Lifecycles * Industrial validation * An ability to work as part of a multifunctional...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Mar 04, 2026  
Mechanical Design Engineer (Military Packaging Design)
Mechanical Design Engineer (Military Packaging Design) JOB LOCATION: STEVENAGE SECURITY: SC - Potential BPSS start DURATION: 12+ Months Likely to extend TYPE: Contract WORK PATTERN: Hybrid, 2-3 days min on site. Although this can change due to workload. Can be continually reviewed. PAY RATE: £ 50 /hr (Umbrella Inside IR35) Essential QUALIFICATIONS Beneficial- HND or HNC in Mech Engineering TARGET INDUSTRIES AND COMPANIES. Is Defence a must? If not what industries can be considered Can be open to industry experience as ling as they have the skillset. Def/Aero can be beneficial, but other areas such as: * Automotive Essential Skillset & Tools * Ideally Degree, HND, or HNC in Mechanical Engineering (or equivalent) with relevant industry experience * Robust hands-on experience with design methodologies such as DFMEA, DFA, and DFM * Strong communication skills with the ability to influence, negotiate, and make technical decisions * Experience engaging...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Mar 04, 2026  
Principal Structural Engineer
Job Title Principal Structural Engineer Stevenage 4 days onsite, 1 WFH Contract Details 12 month contract £50 per hour Inside IR35 Overview A leading engineering organisation operating in the defence and advanced systems sector is looking to engage a Principal Structural Engineer to support complex mechanical analysis activities. You will join an established structural analysis function working on high integrity, safety critical products. This role suits someone who is technically strong, decisive, and comfortable owning complex analysis tasks from concept through to delivery. Key Responsibilities You will be responsible for delivering high quality structural analysis to ensure products meet demanding performance and regulatory requirements. The role involves supporting design teams with both detailed and rapid assessments to enable efficient design progression. Required Skills and Experience Degree qualified in a STEM subject. Strong background in structural analysis...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Mar 02, 2026  
Missile Test Architect
World Class Defence Organisation is currently looking to recruit 2x Missile Test Architect subcontractors on an initial 6 month contract.    Rate: £60.00 per hour Location: Stevenage or Bolton (depending on your preference)   Hybrid / Remote working: This role is a hybrid role, 1-2 days a week possibly in lab up to 3 in first weeks Contract: 37 Hours per week Overtime: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Duration: 6 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella) Missile Test Architect Job Description: The department are looking for experienced test equipment engineers that want to use their knowledge in a system/sub system management role. The role includes determining the project test equipment needs, managing the requirements for test equipment and managing the development through delivery and into service. In this role, you will be responsible for the projects test equipment and...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Jan 22, 2026  
Systems Engineer
World Class Defence Organisation based in Stevenage and Bristol is currently looking to recruit a Systems Engineer subcontractor on an initial 6 month contract.  The department are looking for Systems Engineers ideally from the defence / aerospace background.  Previous experience of DOORS is required. Hourly Rate: £70.00ph (Umbrella).  Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Bristol or Stevenage (depending on your preference) Hybrid / Remote working: The role will likely be onsite 2-3 days per week (this could reduce once up to speed in the role). A 4 day working week is OK (Monday to Thursday).  Duration: 6 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella) Interview process: One stage video interview   Airborne Launcher Functional Systems Engineer Job Description: Analyse high level design documentation to elaborate and capture...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Jan 21, 2026  
High Speed Digital Design Engineer
World Class Defence Organisation based in Stevenage, Hertfordshire is currently looking to recruit a High Speed Digital Design Engineer subcontractor.   Rate: £58.00 - £80 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage Hybrid / Remote working: The role can be a mix of onsite and remote working Duration: 12 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella) Interview process: One stage video interview   Job Description: As part of a large team of analogue and digital electronics design engineers, you will be responsible for the electronics design and development of high speed MPSoC FPGA and AI hardware solutions targeting SDR, radar signal processing and sensor fusion applications. As Digital Design Engineer you will support the Technical Lead/Architect in collaboration with the systems, software, firmware, mechanical and...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Jan 17, 2026  
Supplier Quality Engineer
World Class Defence Organisation based in Stevenage and Bolton is currently looking to recruit 4x Supplier Quality Engineers.   A strong background of Supplier Quality Engineering / Auditing is required.  Defence, Aerospace or Automotive industries would be great.   Rate: £45.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage or Bolton – depending on your preference   Hybrid / Remote working: The role will likely be 1-2 days per week onsite and the rest working remote Duration: 6 or 12 Months initially with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella) Interview process: One stage video interview   Supplier Quality Engineers Job Description:   An exciting opportunity has arisen for a Supplier Quality auditor to join the Supplier Quality Assurance team, supporting assurance of Mechanical & Electro-Mechanical suppliers   This...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Jan 16, 2026  
UK Environmental Sustainability Lead
World Class Defence Organisation based in Stevenage and Bolton is currently looking to recruit a UK Environmental Sustainability Lead.   Rate: £70.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage or Bolton – depending on your preference   Hybrid / Remote working: The role will be a mix of onsite (likely 3 days per week) and remote working Duration: 12 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella) Interview process: One stage video interview   UK Environmental Sustainability Lead Job Description:   Defence is necessary for peaceful prosperity. By doing business responsibly, the company supports their people, local communities and our planet. The company has a Strategy for ESG, Sustainability and Social Value, and is seeking an experienced and practical environmental professional, to lead delivery and reporting of...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
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