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Contractor 44
Inside IR35 London mechanical engineer

44 mechanical engineer jobs found in London

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 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
Feb 05, 2026  
Technical Author
World Class Defence Organisation is currently looking to recruit a Technical Author subcontractor on an initial 12 month contract.  The role will be predominately working remotely from home.   Rate: £43.00 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 2 or 4 days per month in the office and the rest remote.  (some flexibility on this may be needed). Duration: 12 Months with very likely extension. Contracts are often ongoing and long-term thereafter.  IR35 status: Inside IR35 (Umbrella) Interview process: 2 Stage interview process. Initial Virtual or onsite – 2hrs. Author Test & meet the team - onsite for successful candidates.   Technical Author Job Description: To write technical documentation in Standard Generalised Mark-up Language (SGML), Extensible Mark-up Language (XML) and traditional formats for the Company's products in accordance with...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK 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 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
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 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
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
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 19, 2026  
RF Designer
We are recruiting for a RF Designer on contract for our client who is in the Defence industry. The role is based in their Stevenage office. The successful candidate will be the designer for specific RF electronics designs. Interfaces to various stakeholders, such as the Datalink 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 the business, 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 using the latest...
IR35 Status:
Inside IR35

CV-Library Stevenage, Hertfordshire Contractor
CL
Apr 19, 2026  
Head of Core Banking Platforms
Head of Core Banking Systems London 6 month contract Inside IR35 Head of Core Banking Systems needed for a leading financial organisation based in London for a 6 month contract, who are looking to employ an experienced Head of Core Banking systems to act as the expert on core banking systems with an in-depth knowledge of core banking platforms, ideally SBS/SOPRA to act as the expert on core banking systems with approximately 10 years+ experience in banking architecture, core banking engineering, or solution architecture. Some of the main duties of the Head of Core Banking Systems will include: * Review, challenge, and steer decisions relating to the core banking platform, with a primary focus on SOPRA/SBS. * Provide architectural and technical guidance for all core banking components and integrations. * Evaluate, critique, and challenge proposals from partners and suppliers (e.g., Sopra, Atos). * Configure and optimise the banking engine while maintaining strong understanding...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Apr 19, 2026  
Senior Analytics Engineer
Contract Role: Senior Analytics Engineer – Telecom | Central London (Hybrid) Location: Central London — 2 days per week onsite Contract: 6 months initially Day Rate: £450–£550 (Inside IR35) Start: ASAP We’re hiring an Analytics Engineer to support a major telecom client. This role sits between data engineering and analytics, building clean, scalable data models that fuel reliable insights across commercial, finance, and planning teams. What You’ll Do * Build scalable data models (marts, business layers, OBTs) that act as a single source of truth. * Lead end‑to‑end model development: requirements → build → testing → documentation → CI/CD deployment. * Uphold high coding standards in SQL and dbt; review and maintain clean, well‑structured analytics code. * Ensure data quality & PII protection using tests, validation, and secure handling practices. * Troubleshoot data issues across source → transformation → BI layers, owning fixes end‑to‑end. * Optimise...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Apr 18, 2026  
Java Full Stack Developer
Java Full Stack Developer Location: London - Hybrid – 3 days per week onsite Start Date: ASAP Contract Rate: TBC, likely in the region of £500 per day inside IR35 Duration: 6 months initially Role Overview Our client is seeking a Senior Java Full Stack Developer to help design, build, and support complex Java/Python applications within a distributed, microservices‑driven environment. You’ll work across global teams, contribute to an AI‑focused engineering roadmap, and provide critical L3 production support to ensure stability and performance. Key Responsibilities * Develop and maintain Java & Python applications, microservices, and distributed systems. * Work with global product, UX, and engineering teams to deliver high‑quality solutions. * Contribute across the full SDLC, ensuring scalable, secure, test‑driven delivery. * Support L3 production incident resolution, root‑cause analysis, and preventive fixes. * Perform code reviews, enforce best practices,...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Apr 18, 2026  
Senior ServiceNow Engineer
Job title: ServiceNow Developer Contract: 12 months Location: London/Hybrid Rate: £700 per day inside ir35 Job Opportunity: Join the team behind one of the world's most iconic gaming and digital entertainment platforms. You'll play a key role in the Partner Platform, enabling global content creators to deliver games, media, and immersive experiences to millions of users worldwide. This is a chance to work at the heart of a platform that powers one of the biggest names in interactive entertainment, collaborating with international teams and contributing to systems used at truly global scale. Responsibilities: Enhancing and optimising an existing ServiceNow-based licensing workflow Designing and building scalable platform improvements Delivering high-quality solutions in a fast-paced environment Working closely with technical teams to drive end-to-end delivery Building integrations and improving system performance Required skillset: Strong hands-on ServiceNow...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Apr 17, 2026  
Data centre Design Manager
Data Centre Design Manager Inside IR35 | Long-term Contract 50% Remote | 50% European/US Travel (Expensed) IT Services Provider We are seeking an experienced Data Centre Design Manager to join a major IT Services provider in a lead, design-assurance role supporting large-scale European data centre programmes. This is not a pure build role. You'll act as a technical authority, reviewing designs, shaping delivery plans, and overseeing implementation across complex, enterprise environments. Key Responsibilities Review and approve data centre designs (new build and expansion) Act as lead technical engineer / design authority Develop high-level delivery and implementation plans Provide technical governance throughout the project lifecycle Oversee implementation and resolve design or delivery risks Engage with internal teams, vendors, and customer stakeholders Support design sign-off and senior technical discussions Required Experience: Strong experience delivering large-scale...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Apr 17, 2026  
IDAM Back-end Java Developer - SC Cleared
IDAM Back-end Java Developer - SC Cleared Rate: £500 - £535 a day IR35: Inside IR35 Location: Remote within the UK Duration: Initially 6 months Clearance: Active SC Clearance required You will join a global IT consultancy who are delivering digital transformation to public sector body. They are looking for a back-end Java Developer with proven IDAM (Identity and Access Management) experience. You will be part of a continuous improvement squad delivering enhancements and new features alongside BAU work (i.e. incidents and support maintenance activities). In addition, you will be involved in helping our client transform their IDAM service, re-platforming to Azure Kubernetes Service. You will have a solid understanding of modern deployment pipelines and DevOps principles. The role will require providing out of hours support (i.e. Monday to Saturday once per month). As a Senior Software Engineer with a focus on back-end development, you will play a key role in designing,...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
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