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Inside IR35 Contractor mechanical design engineer

64 mechanical design engineer jobs found

CL
Apr 11, 2026  
Mechanical Design Engineer
Mechanical Design Engineer - Contract (12 Months) | Bedfordshire | Inside IR35 Looking to take on complex engineering challenges that genuinely push your technical capability? We're seeking experienced Mechanical Design Engineers to join a high integrity defence engineering programme focused on advanced platform integration and mission-critical systems. This is an opportunity to work on cutting-edge mechanical sub-systems, complex mechanisms, and high reliability components designed for demanding military environments. Location Bedfordshire On-site presence required Mondays and Tuesdays from September 2025 Contract Details Duration: 12 months Hours: 37.5 per week Schedule: 4-day week (Mon-Thurs) with flexible working Rate: Competitive per hour (inside IR35, inclusive of employer deductions) Clearance: BPSS to start; SC required later Eligibility: Sole UK nationals only (due to programme requirements) Role Overview As a Mechanical Design Engineer, you'll be responsible for...
IR35 Status:
Inside IR35

CV-Library Bedfordshire, UK Contractor
CL
Apr 11, 2026  
Mechanical Design Engineer
Mechanical Design Engineer (NX) Remote (occasional site visits to Portsmouth) £56.41 (inside IR35) Defence 6 months Applies an in depth understanding of design processes, tools, systems and techniques to an extensive range of design solutions associated with complex assemblies, components or systems. Is able to develop design solutions from the bottom up with limited information, applying the various design requirements to achieve appropriate design solutions. Working as part of a multi-functional team, the successful applicant will be currently working in a senior designer role and have many years' experience of using CAD software to create 2D and 3D solid modelled designs, for a wide range of products from small components to large complex sub-systems. The successful applicant will take the Lead Design Engineers conceptual information or component list and develop into a detailed design and data pack that is suitable for manufacture. They will then manage the...
IR35 Status:
Inside IR35

CV-Library United Kingdom Contractor
CL
Apr 02, 2026  
Mechanical Design Engineer
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.  Other CAD Package skills are also fine.         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 - 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...
IR35 Status:
Inside IR35

CV-Library Stevenage, 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  
Mechanical Design Engineer
World Class Defence Organisation is currently looking to recruit a Mechanical Design Engineer subcontractor on an initial 6 month contract. Job Title:  Mechanical Design Engineer Rate: £50.00 per hour Location: Stevenage or Bristol (depending on your preference) Hybrid / Remote working: 4 days a week likely onsite (likely could be lower on a week by week basis; depending on work). 1 day remote. (flexible on start and finish time). A compressed 4 day week (Monday to Thursday) a possibility. 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) Mechanical Design Engineer 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 products to meet our customer’s needs. Within this role...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
Apr 18, 2026  
Test Rig Design Engineer
Our premium brand Automotive client is currently recruiting for the following role: Test Rig Design Engineer - £34/hr (Inside IR35) - Warwickshire (hybrid potential) - 12 Months (potential for yearly renewal) Duties: Vehicle and Rig Test Operations forms the backbone of our client's internal vehicle test and development capability, and is responsible for a wide and diverse range of activities including Structural and Durability Test, Body Rig Test, Road Load Data, Analytical Facilities, NVH, Climatic Test, and Safety Test. The Facility & Technology Development team are responsible for the design and delivery of facility components, test rigs and the infrastructure required in support of the core areas delivering physical test plans. The area is also responsible for the development and delivery of key new facilities, technology, infrastructure and strategy for the wider business, project leading from concept through to delivery. The role will see the associate lead the...
IR35 Status:
Inside IR35

CV-Library Warwickshire, UK Contractor
CL
Apr 18, 2026  
Manufacturing Engineer
World Class Defence Organisation based in Bolton is currently looking to recruit 4x Manufacturing Engineers. Rate: £35.00 per hour Location: Bolton 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)   Manufacturing Engineer Job Description: As a Manufacturing Engineer within the unit & missile assembly manufacturing facility your focus will be to ensure that our products are built efficiently and to budget. A key member of the Manufacturing Engineering team, you will carry out activities in support of multi-project manufacturing. Compilation and update of Manufacturing Instructions. Design, Commissioning and proving of associated tooling. Support the industrial validation process through the use of FMEA’s, FAI’s etc. Resolution of technical problems that may arise during the manufacturing process....
IR35 Status:
Inside IR35

CV-Library Bolton, UK Contractor
CL
Apr 17, 2026  
Functional Safety Engineer
Job Title: Functional Safety Engineer Location: Dunton, Essex (4 days onsite per week) Rate: £29.59ph via an Umbrella Company (Inside IR35) – Increasing to £38.38 via an Umbrella Company after 13 weeks Employment Type: Contract (Currently financed until December 2026) Hours: Standard 37.5 Hours Per Week Reference: F56480 Position Description: We are seeking a Functional Safety Systems Engineer to join our client’s core team in the based in Laindon, Essex. You will be a key player in ensuring our complex, distributed technologies including powertrain, infotainment, and active safety meet the highest safety standards. Using Model-Based Systems Engineering (MBSE), you will bridge the gap between research and production, turning "what if" into "what’s next." As a key member of an exciting team leading Functional Safety activities in Product Development, this role involves working with technology subject matter experts to conduct Functional Safety analysis using efficient...
IR35 Status:
Inside IR35

CV-Library SS15, Laindon, Essex Contractor
CL
Apr 17, 2026  
Functional Safety Systems Engineer
RLE International is working on behalf of their Essex based Automotive Client, who are currently looking for a Functional Safety Systems Engineer to support their team. Position Description: Rate: £29.59 (via Umbrella PAYE) – increasing to £38.38 after 12 weeks under AWR’s (Agency Worker Regulations) Our client is seeking a Functional Safety Systems Engineer to join their core team in the Essex. You will be a key player in ensuring complex, distributed technologies including powertrain, infotainment, and active safety meet the highest safety standards. Using Model-Based Systems Engineering (MBSE), you will bridge the gap between research and production, turning "what if" into "what’s next." As a key member of an exciting team leading Functional Safety activities in Product Development, this role involves working with technology subject matter experts to conduct Functional Safety analysis using efficient model-based systems engineering (MBSE / SysML) tools. Additionally, you will...
IR35 Status:
Inside IR35

CV-Library Basildon, Essex Contractor
CL
Apr 16, 2026  
Manufacturing Engineer - New Model Launch
Manufacturing Engineer – New Model Launch Are you ready to play a pivotal role in the launch of a groundbreaking supercar? ASL Technical is recruiting Manufacturing Engineers to join a leading high-performance automotive manufacturer during an exciting new model introduction. This is your chance to shape the future of automotive excellence and be at the forefront of cutting-edge vehicle production. About the Role As a Manufacturing Engineer, you’ll be integral to turning concept designs into reality. From prototype stages through to series production, your expertise will drive the processes, standards, and innovations that define how a world-class supercar is built. You’ll work across multiple projects, collaborating closely with concept design and engineering teams, gaining exposure to all aspects of the business and influencing projects from start to finish. Variety, challenge, and innovation are at the heart of this role. Key Responsibilities Lead the creation and...
IR35 Status:
Inside IR35

CV-Library Woking, UK Contractor
CL
Apr 16, 2026  
Manufacturing Engineer - New Model Introduction
Manufacturing Engineer – New Model Introduction Location: Woking Contract: 14 months Inside IR35 What to Expect As part of our growing Manufacturing Engineering team, this Manufacturing Engineer – New Model Introduction role offers the opportunity to support the introduction of new models, shaping the processes that define how we build each of them. This position is essential for ensuring the successful transition of vehicle models from concept to prototype and eventually into series production. You will work closely with cross-functional teams, including design, engineering, and operations, to influence and deliver new models. Role of the Manufacturing Engineer – New Model Introduction Create and develop deliverables for new model introductions, including vehicle assembly concepts, process sequencing, and documentation. Support the transition of new models from the virtual environment to physical validation and delivery. Develop and implement process traceability...
IR35 Status:
Inside IR35

CV-Library Woking, UK Contractor
CL
Apr 16, 2026  
Senior Mechanical Engineer
Up to £64.81 per hour umbrella (Inside IR35) Up to 4 days per week on site 6 Month contract (initially) Our client is currently looking for a Senior Mechanical Engineer to join the Precision Guidance Integrated Project Team (IPT), working on equipment for the next generation of Missile Seeker Programmes.  Key Responsibility Areas: Support senior members of staff in the delivery of technical solutions on critical Business Programmes. Generation of mechanical solutions to relevant company and international standards. Design of engineering solutions taking into account all requirements including product quality, safety, reliability, testability, sustainability, etc. Mechanical engineering detailed design, including numerical calculations, tolerance studies, etc. Produce Manufacturing Data Packs in line with BS8888 including appropriate application of GD&T. Generate BoM within approve PLM system (Teamcenter). Contribute to reviews of Mechanical designs in accordance with...
IR35 Status:
Inside IR35

CV-Library Basildon, UK Contractor
CL
Apr 15, 2026  
Systems Safety Engineer
Location: Brighton (4-5 days per week onsite) Duration: 6 month contract Inside IR35 Role details: Our client, a prominent player in the Defence & Security and Aerospace sectors, is currently seeking a Systems Safety Engineer to join their team in Brighton. You will be required to work onsite 4 days per week, with an initial period of 5 days per week for the first 4 weeks. Core Responsibilities: Support the development and management of system requirements, ensuring traceability from customer needs through to verification. Support the development of system safety artefacts in accordance with aerospace and defence standards. Assist in defining system architecture and interfaces across mechanical, electrical, and software elements. Participate in design reviews including SRR, PDR, CDR, and test readiness reviews. Support the development of system safety artefacts in accordance with aerospace and defence standards. Assist in performing hazard identification and analysis...
IR35 Status:
Inside IR35

CV-Library Brighton, East Sussex Contractor
CL
Apr 15, 2026  
Project Engineer
Project Engineer Location: Kent (full-time on site) Near Lydd Contract Length: 24 months Start Date: April 2026 Working Pattern: 4-day week on site IR35 Status: Inside IR35Rate: £51.89 per hour (Umbrella) Notice Period: 4 weeksOverview We are seeking an experienced Project Engineer to join a major infrastructure programme on a full-time, site-based basis in Kent. This is a long-term contract opportunity within a highly regulated environment, supporting complex engineering projects from concept through to completion. Due to the nature of the work, UK citizenship is required. Key Responsibilities Lead and support end-to-end project engineering activities across complex programmes Identify project requirements and stakeholder needs Contribute to Project Execution Plans, including design, safety case, and commissioning strategies Support optioneering and concept design development Produce and approve technical specifications and engineering documentation Manage and oversee...
IR35 Status:
Inside IR35

CV-Library Hythe, Kent Contractor
CL
Mar 25, 2026  
Manufacturing Engineer
Manufacturing Engineer Rate: £35.00 per hour Location: Bolton 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)   Manufacturing Engineer Job Description: As a Manufacturing Engineer within the unit & missile assembly manufacturing facility your focus will be to ensure that our products are built efficiently and to budget. A key member of the Manufacturing Engineering team, you will carry out activities in support of multi-project manufacturing. Compilation and update of Manufacturing Instructions. Design, Commissioning and proving of associated tooling. Support the industrial validation process through the use of FMEA’s, FAI’s etc. Resolution of technical problems that may arise during the manufacturing process. Route card changes as a result or rework activities. Management of Configuration Control by...
IR35 Status:
Inside IR35

CV-Library Bolton, 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
Feb 12, 2026  
Manufacturing Engineer
World Class Defence Organisation based in Bolton is currently looking to recruit 2x Manufacturing Engineers. Rate: £35.00 per hour Location: Bolton 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)   Manufacturing Engineer Job Description: As a Manufacturing Engineer within the unit & missile assembly manufacturing facility your focus will be to ensure that our products are built efficiently and to budget. A key member of the Manufacturing Engineering team, you will carry out activities in support of multi-project manufacturing. Compilation and update of Manufacturing Instructions. Design, Commissioning and proving of associated tooling. Support the industrial validation process through the use of FMEA’s, FAI’s etc. Resolution of technical problems that may arise during the manufacturing process....
IR35 Status:
Inside IR35

CV-Library Bolton, 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
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 Bristol, 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
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