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Information Technology 19 Engineering 7 Automotive 2 Media-Journalism 1
Inside IR35 Contractor software development engineer

32 software development engineer jobs found

CL
May 01, 2026  
Software Development Test Engineer - Automotive
Our premium brand Automotive client is currently recruiting for the following role: Software Development Test Engineer - Automotive - £58/hr (Inside IR35) - Manchester Centre (hybrid potential) - 12 Months (potential for yearly renewal) Duties: Developing software to test multiple types/categories of software including end-user applications and operating systems/utility software (which provides a platform for running end user applications for external customers). The work includes: - Developing and directing the preparation and execution of comprehensive test plans, quality assurance plans, procedures, and schedules - Planning and conducting software testing (including using programming languages to write code for use in testing the application/software code), performing analysis of test results, and tracking/reporting risk levels during test execution - Performing regression and ad-hoc testing of software and components potentially affected by system changes - Diagnosing...
IR35 Status:
Inside IR35

CV-Library Manchester, UK Contractor
CL
May 09, 2026  
Senior AWS Data engineer (LDW Data Warehouse Discovery)
Senior AWS Data engineer (LDW Data Warehouse Discovery) Max Supplier Rate: £483 Clearance Required: SC ACTIVE Duration: 6 months Location: Telford with 2 days/week in office IR35 Status: Inside The role falls within the Data Contract Delivery Area of the clients contract. The group provides a wide range of data and analytics solutions in support of our client's business priorities: maximise revenues, bear down on fraud, and cloud migration. This role involves migrating data from legacy on-premise systems (primarily Oracle and Informatica) to a new AWS cloud-native architecture. You will be part of an Agile software delivery team working closely with other engineers and supported by project managers, business analysts and architects. With additional client and key stakeholder interaction as required. We are looking for strong AWS Senior Data Engineers who can design and deliver cloud transformation projects. Your work will be to: As part of a cloud transformation team,...
IR35 Status:
Inside IR35

CV-Library Telford, Shropshire Contractor
CL
May 09, 2026  
Backend Software Engineer
Software Engineer - Active SC, Java, MicroservicesUp to £550 per day (Inside IR35)London / Remote6 months My client is an instantly recognisable consultancy who require a strong Software Engineer with Active Security Clearance (SC) and with deep expertise in Java (Spring Boot) to join a large-scale, business‑critical microservices programme. Key Requirements: Proven experience working as a Java Software Engineer on large microservice architectures Active Security Clearance (SC) Strong capability building scalable RESTful APIs and backend services in Java (Spring Boot): Postgres (or other relational SQL databases) with solid understanding of schema design and SQL Docker: Confident containerising and deploying applications Test‑Driven Development (JUnit & Mockito or similar testing frameworks) CI/CD: Hands‑on experience with Jenkins or similar automated pipeline tooling Flexibility working in agile teams and collaborating closely with engineers, product, and design colleagues...
IR35 Status:
Inside IR35

CV-Library City of London, London Contractor
CL
May 09, 2026  
Bare-Metal' Embedded Software Engineer - active SC required
Location: Southampton (20% onsite as required) Duration: 6 month contract Rate: £66ph UMB (Inside IR35) Active SC required. Role details: Our client, a leader in the Defence & Security sector, is currently seeking a 'Bare-Metal' Embedded Software Engineer to join their Integrated Sensors & Protection line of business in Southampton. This contract role is primarily remote with the expectation to be onsite 20% of the time as required and has a duration of 6 months. You will be involved in the next generation of Airborne Integrated Communication System for the Global Combat Air Programme (Tempest aircraft). Key Responsibilities: Development and coding of software solutions for Embedded, Real-Time and Safety Critical application software Engaging in the development of innovative software features and capabilities Collaborating with other engineers to continuously improve and create market-leading defence products Ensuring software solutions meet stringent safety and...
IR35 Status:
Inside IR35

CV-Library Southampton, Hampshire Contractor
CL
May 09, 2026  
Embedded Software Engineer (SC Cleared)
Bare Metal Embedded Software Engineer (SC Cleared) 6 Months Hybrid - 1-2 Days per week on site in Southampton £488 per day (Inside IR35) ***Please note - To be considered for this role, you need to hold active SC Clearance and be a Sole British National*** Overview We're working with a leading organisation in the defence and aerospace sector, seeking an experienced Embedded Software Engineer to support the development of next-generation airborne communication systems as part of a major UK programme. This is an opportunity to join a highly skilled engineering team working on cutting-edge, safety-critical technology. The Role You'll be involved in the development of software solutions for embedded, real-time, and safety-critical systems, contributing across the full software lifecycle. Key Responsibilities Develop software for embedded, real-time, and safety-critical applications Write and maintain high-quality, efficient code Contribute to system design and...
IR35 Status:
Inside IR35

CV-Library Southampton, Hampshire Contractor
CL
May 08, 2026  
Principal Software Quality Engineer
Principal Engineer - Software Assurance £65.98 p/hr - Inside IR35 12 months Defence 1-2 days a month on site, Coventry, Barrow, Frimley or Weymouth Our complex platforms are increasingly driven by Software, assuring the quality of this and the proper integration is critical to our success. Software assurance is the ongoing process to ensure that software products meet and comply with software engineering, quality and safety standards. It is a systems engineering activity that that supports the achievement of functional and multiple non-functional requirements and is applicable to the whole engineering lifecycle from concept design to in service support. This is a growing role within our business and industry with significant potential for development and further growth. We expect the candidate to quickly develop an understanding of the development, use and control of software in our complex and unique application. Being actively involved in the decision making and problem...
IR35 Status:
Inside IR35

CV-Library United Kingdom Contractor
CL
May 08, 2026  
Senior Test Engineer - Lead
I am recruiting for a Senior Test Engineer to be based in Leeds, Birmingham, Manchester or Newcastle-Upon-Tyne 3 days per week, 2 days remote. Candidates must live close to one of the above sites. The role falls inside IR35 so you will have to work through an umbrella company for the duration of the contract. The Senior Test Engineer will have extensive Typescript and automation (functioning) experience. The candidates must have demonstrable leadership skills in driving change and will have managed/led a team. Your team leading experience must be clearly visible on your profile. Candidates will also have experience of non-functioning testing - either performance or accessibility. You will have a number of years of experience in software testing, with a focus on manual testing and test automation. You must be proficient in Java, Typescript and Javascript, with the ability to write and maintain test automation scripts. This experience must have been used in your most recent...
IR35 Status:
Inside IR35

CV-Library Leeds, West Yorkshire Contractor
CL
May 08, 2026  
Embedded Software Engineer
Embedded Software Engineer Whiteley (Hybrid) – SC Required – Initial 6 month contract (Inside IR35) About the Opportunity We are recruiting on behalf of a technology organisation that specialises in the research, design, and development of advanced wireless and critical RF communication systems used in mission-critical environments including defence, uncrewed and autonomous systems, government, and broadcast. They are seeking an Embedded Software Engineer to join their team working on a varied pipeline of technically challenging projects. The successful candidate will develop software for sophisticated communication products that deliver secure, reliable, long-range data transmission, collaborating closely with hardware, RF, and systems engineers and contributing across the full product lifecycle. Key Responsibilities * Design, develop, and maintain embedded software for advanced wireless communication products. * Program primarily in C++ for embedded applications. *...
IR35 Status:
Inside IR35

CV-Library Whiteley, Hampshire Contractor
CL
May 08, 2026  
Senior Mechanical Engineer (contract)
Senior Mechanical Engineer Basildon, Essex (1 day/week on site) £53ph (Inside IR35) Initial 6 month contract **Please note we can only consider sole UK Nationals for this role** We are 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. What you'll do as a Senior Mechanical Engineer: 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...
IR35 Status:
Inside IR35

CV-Library Basildon, Essex Contractor
CL
May 07, 2026  
Embedded Software Engineer
Rullion are looking to recruit for the following role: Embedded Software Engineer Location @: Oxford ,Eyensham UK ASAP Start Duration : 12 months 37 hours per week Monday To Friday Inside IR35 £35++++ Per hour Hybrid Key Requirements Extensive experience in embedded C development on STM32 (ARM Cortex) using Keil IDE. Strong expertise in multithreaded RTOS systems, including thread synchronization, and debugging. Proven ability to analyse, maintain, and optimise existing codebases, with focus on performance and resource efficiency. Solid understanding of embedded file systems and data transfer. Experience of conducting code reviews and contributing to design improvements and practical optimisations. Comfortable working independently, self-directed, and able to demonstrate clear progress. Desirable Skills Experience with CAN, SPI, RS232 communication protocols. Familiarity with software V&V, Git-based workflows, and Agile/DevOps environments. Python for tooling or test...
IR35 Status:
Inside IR35

CV-Library Oxford, Oxfordshire Contractor
CL
May 07, 2026  
Cloud Infrastructure Engineer
SC Cleared Cloud Infrastructure Engineer Location: London (Hybrid) Start Date: ASAP Duration: 7 - 12 months IR35: Inside (via Umbrella Company) Key tasks for the Cloud Infrastructure Engineer to include: Leading financial house are seeking a seasoned SC Cleared Cloud Infrastructure Engineer to join an existing team where you will with the ongoing improvement of their technology stack, ranging from complex cloud-hosted applications utilizing IaC and full CI/CD automation, to more traditional VM-based on-premise systems. Cloud Infrastructure Engineer Technical Skills: • SC Clearance / Security Clearance (ideally valid & transferrable) • Proven experience in AZURE Terraform code • Demonstrable experience in GitHub Actions • Experience of working in a controlled environment with strict change control • Good understanding and practical implementation of both CI and CD • Good working knowledge of the installation and configuration of Windows based systems. • Excellent...
IR35 Status:
Inside IR35

CV-Library Central London, London WC2N 5DU, UK Contractor
CL
May 07, 2026  
Senior Mechanical Engineer
6 month contract (initially) Up to £55.56 per hour umbrella (Inside IR35) Hybrid working (circa 1 day per week on site with a need to be flexible where required) Job Role: 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. The successful candidate will be experienced in the Aerospace and/or Defence Industry and preferably hold SC Security status. The Mechanical Engineer role offers hybrid working, with the option of on-site working at our Basildon office. The frequency of on-site visits shall be agreed with the project team to ensure that key Milestones and Deliverables are met on time, to budget and to the desired quality. Key Responsibilities: Support senior members of staff in the delivery of technical solutions on critical Business Programmes. Generation of mechanical solutions to relevant company and international...
IR35 Status:
Inside IR35

CV-Library Basildon, UK Contractor
CL
May 02, 2026  
Senior Mechanical Engineer
Senior Mechanical Engineer Basildon 6-Month Contract Paying up to £55p/h (Inside IR35 Key Responsibilities 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 business and industry standards. Deliver design solutions against Technical Requirements, within budget and timescales. Essential Skills & Experience Mechanical or Science degree qualified, or equivalent, with experience....
IR35 Status:
Inside IR35

CV-Library Basildon, Essex Contractor
CL
May 02, 2026  
Interim Electronic Test Engineer
The Interim Electronic Test Engineer will support and lead all validation programs for electronic components/products, validating to key product specifications, supporting customers in the areas of research and development, new product introduction and VA/VE programs. Client Details The organisation is a well-established entity within the industrial and manufacturing sector, offering innovative engineering solutions. As a mid-sized company, they are committed to maintaining high standards and delivering excellence in their field. Description The interim Electronic Test Engineer responsibilities will include: Support preparation & selection of validation plans for electronic components based on the product specification. Execute multiple, complex, long duration tests designed to stress micro-electronic circuitry both thermally and mechanically. Support root cause analysis when failure mode is detected. Responsible for maintaining and setting up Laboratory tests to company...
IR35 Status:
Inside IR35

CV-Library Dewsbury, West Yorkshire Contractor
CL
May 02, 2026  
Software Asset Management Consultant
Contract – Inside IR35, Remote Software Licensing Specialist (Developer Background) – Financial Services Client Excellent opportunity with a leading financial services client who are looking for a Software Asset Management Consultant to join the business. We’re specifically looking for someone with a strong background in software development or programming, to support governance, processes, and controls around the use and contribution of Free and Open Source Software (FOSS). The role is ideally suited to someone who has previously built or maintained software and has developed a strong understanding of software licensing from a developer’s perspective—including how licensing impacts code usage, distribution, and integration. Key Responsibilities * Provide practical, developer-focused guidance to engineering teams on the implications of FOSS licensing within their applications and codebases. * Analyse licensing and copyright considerations for new open-source software requests,...
IR35 Status:
Inside IR35

CV-Library E14, Canary Wharf, Greater London Contractor
CL
May 02, 2026  
Java Developers x 2 - SC Cleared
Java Developer - Cloud Services + 12 month initial contract + Hybrid working out of Newcastle + SC Cleared role + £70 p/h - Inside IR35 Key Skills: + Java Developer + Cloud Services + RedHat/Kubernetes Role Overview - The Software Engineer will join our collaborative, forward-thinking Agile Scrum team, working on innovative Geospatial software, using the latest cloud-based technologies. The engineer will be involved in every stage of the software development lifecycle, from initial design through development, testing, and deployment, delivering robust, scalable cloud-based services. The role is based at our Newcastle office. Flexible working arrangements are in place for the team. The successful candidate is expected to be in the office 3 days a week, with the opportunity to work 2 days from home. Responsibilities Develop high-quality, readable, scalable and easily maintained code, using Java and related technologies, meeting requirements and coding standards. Develop...
IR35 Status:
Inside IR35

CV-Library Newcastle upon Tyne, Tyne and Wear Contractor
CL
May 01, 2026  
Software Architect Engineer
Software Architect Engineer - (phone number removed) - £33.99/hr (Umbrella Rate - Inside IR35) Step into an exciting opportunity to shape the future of software engineering as a Software Architect Engineer. This role offers you the chance to work on cutting-edge projects, contributing to the development of innovative technologies in the automotive sector. If you're passionate about software architecture and thrive in a dynamic, forward-thinking environment, this is your chance to make a real impact. What You Will Do: - Define and design complex software processes, converting stakeholder needs into effective software solutions. - Create and specify the overall software structure, ensuring seamless integration of requirements, constraints, and dependencies. - Develop architectural guidelines, technical standards, and coding protocols to support current and future technological advancements. - Communicate software architecture designs effectively to stakeholders, ensuring...
IR35 Status:
Inside IR35

CV-Library Warwick, UK Contractor
CL
May 01, 2026  
Software Architect Engineer
Software Architect Engineer - (phone number removed) - £27.30/hr (Umbrella Rate - Inside IR35) Step into an exciting opportunity to shape the future of software engineering as a Software Architect Engineer. This role offers you the chance to work on cutting-edge projects, contributing to the development of innovative technologies in the automotive sector. If you're passionate about software architecture and thrive in a dynamic, forward-thinking environment, this is your chance to make a real impact. What You Will Do: - Define and design complex software processes, converting stakeholder needs into effective software solutions. - Create and specify the overall software structure, ensuring seamless integration of requirements, constraints, and dependencies. - Develop architectural guidelines, technical standards, and coding protocols to support current and future technological advancements. - Communicate software architecture designs effectively to stakeholders, ensuring...
IR35 Status:
Inside IR35

CV-Library Warwick, UK Contractor
CL
Apr 30, 2026  
Lead Technical Architect (SC Clearance Preferred)
Contract | Inside IR35 | 6 months Location: Manchester preferred (hybrid, flexibility offered) Security clearance SC clearance is required Active SC is preferred, though candidates with lapsed but transferable SC may be consideredThe opportunity We're looking for a hands‑on Lead Technical Architect with a strong engineering background to help design, build and evolve cloud‑native platforms used by other developers. This is not a strategy‑only architecture role. You'll work closely with engineers, contribute to codebases, and lead architectural decisions by building and delivering real systems. If you're an engineer at heart who's progressed into architecture - or a technical architect who still codes - this role is likely to suit you well. What you'll be doing Designing and building scalable, secure, cloud‑native platforms on AWS Working directly alongside engineers, writing and reviewing production code Defining and implementing serverless architectures in large,...
IR35 Status:
Inside IR35

CV-Library Manchester, Greater Manchester Contractor
CL
Apr 18, 2026  
C++ Application Software Engineer
World Class Defence Organisation is currently looking to recruit 3x C++ Application Software Engineer subcontractors on an initial 12 month contract.     This role requires: Strong experience in C++ application development. A strong background in software engineering, its realisation and system wide impact. Experience in CI/CD pipelines, GitLab, Docker. Experience of developing software for virtual environments.  Rate: £65.00 per hour Location: Bristol Hybrid / Remote working: The role will likely be onsite – a compressed 4 day week (Monday to Thursday is fine).  There may be some scope for hybrid working (project dependent). 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)...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
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