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Contractor 161
Inside IR35 Hertford

161 jobs found in Hertford

CL
Feb 13, 2026  
Assembly Technician
Assembly Technician, Ware, Stanstead Abbotts up to £15p/hr doe (Inside IR35 contract) Hours - Monday-Thursday 8-5. Fridays 8-2.30 (but could change in 2026) contract until 22/5/26 Responsible for assembling parts and components to build mechanical or electrical products. Read and interpret engineering drawings, assemble parts and components accurately, test the assembled components and report any faults. Ensure that the products meet quality and safety standards. This role also involves testing, inspecting, troubleshooting, and repairing any issues that may arise. The successful Assembly Technician must be able to work safely and efficiently with hand tools, power tools, machinery, and other equipment. They must also possess excellent communication and problem-solving skills. Duties and responsibilities Assemble components in accordance with technical drawings. Test completed assemblies for correct operation. Perform basic maintenance on machinery and equipment. Identify and...
IR35 Status:
Inside IR35

CV-Library SG12, St Margarets, Hertfordshire Contractor
CL
Mar 04, 2026  
Global Study Asset Manager
Job Title: Contract Global Study Asset Manager (GSAM) - January 2026 Location: Welwyn (Hybrid - 3 days WFH) Hours: Full-time, 37.5 hours per week Pay: £339.27 - £376.97 per day (PAYE) or £450.00 - £500.00 per day (UMB) Contract: 6-month contract (Inside IR35) An excellent opportunity has arisen for a Global Study Asset Manager (GSAM) to join one of our longstanding clients, a global pharmaceutical organisation, in a hybrid UK-based role. This position is a hands-on, operational delivery role, supporting the execution of a portfolio of global clinical studies within an established governance framework. The role focuses on day-to-day study operations and execution, working closely with senior study leadership, cross-functional teams, and external partners to ensure high-quality and efficient study delivery. The therapeutic focus is predominantly Oncology, although studies may also support additional therapy areas aligned to the client's wider portfolio. This role does not...
IR35 Status:
Inside IR35

CV-Library Welwyn Garden City, Hertfordshire Contractor
CL
Mar 04, 2026  
Damp and Mould Surveyor
Interim Damp and Mould Surveyor Harlow District Council 12-month initial contract £400p/d Umbrella (INSIDE IR35) On-site requirement: 2-3 days per week We are delighted to be supporting Harlow District Council with the recruitment of a Building Surveyor (Damp & Mould) on a 12-month temporary basis.   The role This is a key role within the housing service, focused on leading the council's response to damp, mould and condensation issues across the housing stock. You'll carry out detailed property inspections, diagnose root causes, and produce clear technical reports with practical recommendations. You'll also specify and oversee remedial works, manage contractors on site, and ensure works are delivered to a high standard. Just as importantly, you'll communicate clearly and supportively with residents, keeping them informed throughout each case while ensuring compliance with housing standards and statutory requirements.   Key responsibilities ·Undertake inspections...
IR35 Status:
Inside IR35

CV-Library Harlow, UK Contractor
CL
Mar 05, 2026  
RF Design Engineer
RF Design Engineer 12 month contract Based in Stevenage Offering £75ph Inside IR35 Are you an experienced RF Design Engineer? Do you want to work with an industry-leading company? If your answers to these is yes, then this could be the role for you! As the RF Design Engineer, you will be working alongside a market-leading Defence and Aerospace company who are constantly growing and developing. They are always looking to bring on new talents such as yourself and further develop your skills to enable you to grow within the company and industry. Due to the nature of the work you will be involved in, active UK SC Clearance will be required. You will be involved in: Technical and hand on testing and proving Collaborate with other functions including Software & Firmware Engineering, Mechanical Engineering, Production and Future Systems Your skillset may include: Proven relevant RF electronics design experience, preferably for harsh environments (EMC, Vibration, Thermal)...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Mar 05, 2026  
RF Design Engineer
RF Design Engineer JOB LOCATION: Stevenage SECURITY CLEARANCE LEVEL: SC / SC Can start on BPSS, Not UKEO DURATION: 12+ Months Minimum WORK PATTERN: Mon – Fri onsite fulltime (possibility for some flex) RATE: £65 - £75 Per hr on Umbrella (Inside IR35) TARGET INDUSTRIES AND COMPANIES. Is Defence a must? If not what industries can be considered Defence ideally defence telecoms ALTERNATIVE JOB TITLES IN OTHER COMPANIES OR INDUSTRIES RF Systems / Microwave engineer Overview: * we are growing our Electromagnetic Warfare (EW) capabilities. The EW Group supports activities on relevant weapon system and missile programmes, with specific responsibilities for the design of the RF System, working with the missile systems team to support the integration of RF Equipment into the missile. The EW group is ideally looking for a person who exhibits / holds a range of the following qualities / experience. The successful candidate will be the designer for specific RF electronics...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Mar 05, 2026  
Principal Structural Mechanical Engineer
Principal Structural Mechanical Engineer JOB LOCATION: Stevenage SECURITY CLEARANCE LEVEL: SC to Start DURATION: 12+ Months (Possible Extension) WORK PATTERN: Min 4 Days a Week on Site; Possibly 1 Remote - Compressed Week Potentially Available. PAY RATE: £ 50 Per Hour Umbrella Inside IR35 Essential QUALIFICATIONS Ideally degree qualified; STEM subjects. TARGET INDUSTRIES AND COMPANIES. Is Defence a must? If not what industries can be considered Ideally Def/Aero background. Open to others if skillset matches. Essential Skillset & Tools Alter FE toolset; experience in alternative FE codes would be considered (). As Seen on JD. Overview: The Mechanical Analysis Group are looking for a Principal Structural Engineer to join its team in Stevenage. The group consists of over fifty engineers working across a wide spectrum of cutting-edge military systems. Responsibilities: Working for an internationally recognised company, you will play a critical role in ensuring that products deliver...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire 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 04, 2026  
Procurement Officer
A leading Defence organisation are looking for a proactive and organised Procurement Officer to join their procurement function in Stevenage. Role: Procurement Officer Duration: 6-month contract Pay: Up to £27 p/hr (Inside IR35 via Umbrella) Location: Stevenage Working Pattern: Hybrid 1/2 days In this role, you will manage the full lifecycle of customer repair requests and spares procurement, ensuring seamless communication, timely deliveries, and exceptional supplier performance. Key Responsibilities: Processing electronic and manual requisitions. Use of SAP to raise request for quotations (RFQ) Creating Excel spread sheets to assess the data to aid supplier selection process. Raising of purchase orders within SAP. Progressing of orders to ensure on time delivery to the internal customers. Purchase order amendment in line with changing delivery forecasts post order acknowledgement. Maintain dialogue with internal customer to ensure topical delivery forecast are maintained....
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Mar 04, 2026  
RF Design Engineer
RF Design Engineer Initial 12-month contract up to £75ph, UMB, inside IR35 Stevenage (onsite) Please note this role requires SC level Security Clearance. The successful candidate will be the designer for specific RF electronics designs. Interfaces to various stakeholders, such as the Datalink core team, Design Authority and other functional entities will need to be managed effectively to ensure the designs are delivered in a timely manner and will integrate to the other parts of the system Responsibilities: The role is substantially technical and hand on testing and proving is essential. Collaborative working with other functions of MBDA, in particular Software & Firmware Engineering, Mechanical Engineering, Production and Future Systems. Skillset/experience required: Individuals will be able to demonstrate a significant number of the following attributes: * Proven relevant RF electronics design experience (likely to be the design of 3 or 4 complex RF electronic items...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Mar 04, 2026  
Purchasing / Procurement Officer
World Class Defence Organisation based in Stevenage, Hertfordshire is currently looking to recruit a Purchasing / Procurement Officer.   The role does require a Procurement background and understanding of SAP.    Rate: £27.00 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 1 or 2 days a week in the office and the rest remote 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   Purchasing / Procurement Officer Job Description:   Focal point for working with the CSS Spares and Repairs Team in the organisation and the management of customer repairs and spares procurement based upon the requests made by internal project teams. Supplier assessment, adherence to open order books, supplier communications to ensure on time deliveries,...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK 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
Feb 25, 2026  
SAP Security Support Administrator
World Class Defence Organisation is currently looking to recruit a SAP Security Support Administrator Subcontractor on an initial 12 month contract. The role can be based from either the companies Stevenage or Bolton site, depending on your preference.  The role will be predominantly working from home.   Rate: £22.63ph (Umbrella) 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 predominantly working from home… one day per week onsite.  Also, a condensed 4 day working week of Monday to Thursday is OK too. Duration: 12 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella)   SAP Security Support Administrator Job Description: The SAP Security Support Administrator plays a key role in supporting documentation, refinement and execution of General IT Controls...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Feb 06, 2026  
Embedded Software V&V Engineer
World Class Defence Organisation is currently looking to recruit 5x Embedded Software V&V Engineer subcontractors on an initial 6 month contract.  Skills in C, C++ or ADA are beneficial.  A defence or aerospace industry background would also be great.   Rate: £70.00 per hour Location: Stevenage or Bristol, depending on your preference. Hybrid / Remote working: Full time on site (occasional work from home day) (The company are happy with a 4 day week) 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) Interview process: 1 stage video interview   Embedded Software V&V Engineer Job Description:   The department create the complex, highly reliable real-time software that powers missile systems and their components, ensuring that they provide the performance and functionality our users require when they...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
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