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Information Technology Inside IR35 test development engineer

22 test development engineer jobs found

CL
Jun 26, 2026  
Application Software Engineer C
Application Software Engineer C++ JOB LOCATION: BRISTOL SECURITY CLEARANCE LEVEL: SC to Start DURATION: 12+ Months (Extension Possible) WORK PATTERN: Full Time ONSITE (Compressed Option Available) - Could be flex every now & then (work dependent). RATE: £ 65.00 Per hr on Umbrella (Inside IR35) TARGET INDUSTRIES AND COMPANIES. Is Defence a must? If not what industries can be considered Preferable for Defence/Aero; not essential if skill sets are apparent from others (Mathematics/algorithm background). ALTERNATIVE JOB TITLES IN OTHER COMPANIES OR INDUSTRIES - Essential Skillset & Tools * 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. Overview: * The team is implementing a demonstration system for a complex new Command and Control application, which...
IR35 Status:
Inside IR35

CV-Library Bristol, City of Bristol Contractor
CL
Jun 25, 2026  
Software Engineer
World Class Defence Organisation based in Bristol is currently looking to recruit 3x Software Engineer subcontractor on an initial 12 month contract, with very likely extension.  The role will be onsite 4 days per week.  A 4 day working week is OK (Monday to Thursday).   Rate: £65.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Bristol Hybrid / Remote working: The role will be onsite 4 days per week. A 4 day working week is OK (Monday to Thursday).  Possibility of some remote working (project dependant) 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: The role is within a team implementing a demonstration system for a complex new Command and Control capability, this extends existing concepts and logic. If the demonstration is successful, it may develop...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
Jun 25, 2026  
Application Software Engineer
Application Software Engineer 12-month contract Onsite in Bristol SC must be in place prior io starting £65ph, UMB, inside IR35 Our client, a leading organisation in the Defence & Security sector, is currently seeking an Application Software Engineer for a contract position in Bristol. This role involves participating in the development and testing of a Command and Control application system, with the potential for significant impact on future projects if the demonstration is successful. Key Responsibilities: Developing application-level software, including sophisticated business logic Collaborating with internal algorithm teams to integrate algorithms and test complex transformation logic Implementing and integrating interfaces with other subsystems and external simulators Building and extending components within an existing software application framework Deploying applications into a virtualised test environment Ensuring software solutions meet system requirements within...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
Jun 21, 2026  
Software Test Engineer
World Class Defence Organisation is currently looking to recruit a Software Test Engineer subcontractor on an initial 12 month contract. Rate: £65.00 per hour Location: Stevenage Hybrid / Remote working: 4 days a week likely onsite.  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: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella) Software Test Engineer Job Description: An exciting opportunity to work as a Software Testing Engineer within the Environment Simulators team based in our Stevenage office with our simulation developers.  The Simulation Software department is at the forefront of developing simulations for the Weapon System and sub-systems teams using the full development life cycle and agile methodologies.  Our simulations follow best practices and capability to ensure our products...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
May 23, 2026  
FPGA Design Engineer
World Class Defence Organisation is currently looking to recruit 3x FPGA Design Engineer Subcontractors on an initial 12 month contract.   Rate: £90.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage or Bristol depending on your preference Hybrid / Remote working: Hybrid working of 3 days per week onsite 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   FPGA Design Engineer Job Description:    For this role, we are seeking an experienced FPGA design and verification engineer (~4+ years), to support the development of our growing portfolio of complex FPGA projects. The current portfolio ranges from advanced signal processing systems (ImageRadio), core embedded processing systems, through to safety & security critical systems. Responsibilities: The role...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
May 23, 2026  
FPGA Design Engineer
World Class Defence Organisation is currently looking to recruit 3x FPGA Design Engineer Subcontractors on an initial 12 month contract.   Rate: £90.00 per hour Overtime Rate: Hours worked over the standard 37 hours per week, will be paid at ‘time and a quarter’ Location: Stevenage or Bristol depending on your preference Hybrid / Remote working: Hybrid working of 3 days per week onsite 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   FPGA Design Engineer Job Description:    For this role, we are seeking an experienced FPGA design and verification engineer (~4+ years), to support the development of our growing portfolio of complex FPGA projects. The current portfolio ranges from advanced signal processing systems (ImageRadio), core embedded processing systems, through to safety & security critical systems. Responsibilities: The role...
IR35 Status:
Inside IR35

CV-Library Bristol, UK 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
CL
Apr 18, 2026  
Embedded Software Engineer
World Class Defence Organisation is currently looking to recruit 2x Embedded Software Engineer subcontractors on an initial 6 month contract.     Rate: £68.00 per hour Location: Bristol Hybrid / Remote working: The role will be onsite – a compressed 4 day week (Monday to Thursday is fine) 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: One stage Video Interview Embedded Software Engineer Job Description: We are a world leader in missile and missile systems, seeking a highly capable and adaptable Embedded Software Engineer to join our Development Facility in Bristol. As part of our growing dynamic Software team, you will develop the latest...
IR35 Status:
Inside IR35

CV-Library Bristol, UK Contractor
CL
Apr 17, 2026  
Embedded DSP SW Engineer – Software Defined Radio Datalink
World Class Defence Organisation based in Stevenage, Hertfordshire is currently looking to recruit an Embedded DSP Software Engineer – Software Defined Radio Datalink subcontractor on an initial 6 month contract.     This role would suit a candidate who comes from a mobile communications industry or from the aerospace / defence field. Other industries will be considered too.   Rate: £70 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 based onsite.  A compressed 4-Day week of Monday to Thursday is possible 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 process   Embedded DSP Software Engineer – Software Defined Radio Datalink Job Description:   Join our growing Software team in Stevenage, working as part of a dynamic team to...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Jun 26, 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
Jun 26, 2026  
Integration Engineer
Position Title: Integration Engineer Duration: Contract Location: Gaydon Based in West Midlands £35.80 per hour (Inside IR35) *Applicants MUST have proof of immediate, on-going and valid eligibility, to work full time, and travel within, the UK* Duties: This role is to lead the diagnosis of software and systems issues in the development phase of automotive vehicle platforms. The successful candidate will be part of the Central Systems Integration team. CSI have the key responsibility of planning and coordinating delivery of software from multiple ECUs which when combined deliver the features and systems of the vehicle under development. This particular role within CSI will focus on issues resolution, specifically understanding root cause and assisting with resolution of systems and software issues within the vehicle. They will engage directly with complex issues to aid with data gathering, defining the problem, analysing the data with the intent to understand which team...
IR35 Status:
Inside IR35

CV-Library Warwick, Warwickshire Contractor
CL
Jun 26, 2026  
Data Engineer Lead Role - Hybrid - Banking
Data Engineer Lead - Tier 1 Bank - London - 6 months Role - Data Engineer Lead Rate - £700 per day (Inside IR35) Duration - 6 months with very likely extension Location - Hybrid / Liverpool Street - 3 days per week in an office in Liverpool Street (London) Role The Data Engineer Lead is responsible for designing, building, and supporting modern data platform, with a particular focus on Databricks, cloud-based data engineering, and leading the migration of legacy Oracle systems into scalable, cloud-native environments. The role supports the organisation's data strategy especially on Finance and Regulatory domain by ensuring high-quality, reliable pipelines and data models that enable analytics, regulatory reporting, and data-driven decision-making. The post holder plays a key leadership role within the Data Engineering function, shaping architectural direction, ensuring engineering excellence, and partnering with Technology, Architecture, and Business teams across the...
IR35 Status:
Inside IR35

CV-Library City of London, London Contractor
CL
Jun 26, 2026  
Senior Data Engineer
Senior Data Engineer Hybrid: 3 days in office, Warwick Duration: 6-Month Contract Rate: £450/day (Inside IR35) A leading organization is seeking a Senior Data Engineer to join their cloud data platform team on a hybrid basis (3 days in office, Warwick). This is a 6-month contracting role offering competitive daily rates and the opportunity to contribute to a modern, cloud-native data platform. The Role You will be responsible for driving the design and implementation of scalable, high-performing data architectures and pipelines. Working with the Interconnectors Data Platform (ICDP), you will provide both technical leadership and hands-on development, supporting the transition to modern Azure-based ingestion patterns and Medallion Architecture. Key Responsibilities * Lead the design and implementation of scalable data architectures and layered models (Bronze/Silver/Gold). * Develop robust, secure, and observable ingestion and transformation pipelines using Azure-based...
IR35 Status:
Inside IR35

CV-Library CV34, Warwick, Warwickshire Contractor
CL
Jun 26, 2026  
Software Engineer
Full Stack .NET Developer (x3) Location: Leeds (1 day per month onsite) Rate: £500 per day Engagement: Contract IR35 Status: Inside IR35 Start Date: ASAP Duration: Initial 3 months Overview We're supporting a major NHS digital transformation programme and are looking for three experienced Full Stack .NET Developers. You'll be working on the development and enhancement of critical healthcare applications, helping deliver scalable, secure, cloud-native solutions that directly support NHS services and patient outcomes. This is an excellent opportunity for developers who enjoy working across the full stack, with a strong Microsoft technology background and modern front-end expertise. Key Responsibilities Design, develop and maintain enterprise-grade applications using .NET technologies Build and enhance responsive front-end applications using React and TypeScript Develop secure RESTful APIs and backend services Work within Azure-native environments, leveraging cloud-first...
IR35 Status:
Inside IR35

CV-Library Leeds, West Yorkshire Contractor
CL
Jun 25, 2026  
Software Engineer
Software Engineer 12 month contract Can be based in Newcastle or Guildford Offering £60ph Inside IR35 Do you have experience with Java? Do you have experience in cloud services development? Do you want to work with an industry-leading company? If your answer to these is yes, then this could be the role for you! As the Software 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. You will be involved in: Develop high-quality, readable, scalable, and easily maintained code, using Java and related technologies, meeting requirements and coding standards Develop reusable patterns and encourage innovation that will enhance team velocity Contribute to quality assurance by writing unit and automated tests Conduct design and code reviews to ensure code...
IR35 Status:
Inside IR35

CV-Library Newcastle upon Tyne, Tyne and Wear Contractor
CL
Jun 25, 2026  
SC Cleared Mid-Senior Frontend Developer | £350–£450 | Inside IR35 | 12 Months | Hybrid Remote
SC Cleared Mid-Senior Frontend Developer | £350–£475 | Inside IR35 | 12 Months | Hybrid Remote   We’re currently recruiting multiple SC Cleared Frontend Developers (Mid to Senior level) to support a major transformation programme.   You’ll be embedded within a multi-disciplinary Agile team, working closely with designers, backend engineers and stakeholders to deliver high-quality, accessible user interfaces, built from existing prototypes and evolving user needs.   These roles are determined as Inside IR35, offered on a hybrid basis with up to 3 days onsite per week in Birmingham, Manchester, Leeds or Newcastle.   These positions require current and active SC Clearance, lapsed or previously held clearances will not be suitable for these engagements.   Key Requirements: Current and Active SC Clearance is essential for these roles Willingness to travel up to 3 days per week to the office closest to you JavaScript, HTML, CSS, Node  Senior Role Drive development of...
IR35 Status:
Inside IR35

CV-Library Birmingham, UK Contractor
CL
Jun 25, 2026  
Cloud Engineer
Cloud Engineer - x 4 Defence 6 months £365 per day - Inside IR35 Mostly remote - 1-2 days per month in Preston (Flexible) "Successful applicants must be eligible for SC clearance." The Azure Engineer is responsible for building, operating, and optimising cloud infrastructure and platform services within Microsoft Azure. This role provides hands‑on engineering, operational support, and continuous improvement of Azure services to ensure secure, scalable, and resilient cloud delivery. The engineer works closely with architects, security teams, and application owners to implement solutions that follow best practice, automation standards, and governance controls Deploy, configure, and maintain Azure infrastructure across compute, network, storage, and platform services. Implement Infrastructure‑as‑Code (IaC) for consistent and automated environment provisioning. Apply Azure security and governance controls including RBAC, Policy, and network security rulesets. Support the build...
IR35 Status:
Inside IR35

CV-Library United Kingdom Contractor
CL
Jun 21, 2026  
Data Engineer
Data Engineer Telford / Hybrid - 2 days per month onsite £450 per day inside ir35 6 months duration Active SC clearance Are you an experienced Data Engineer looking to work on large-scale, impactful data platforms? We're seeking skilled Data Engineers to join a growing team delivering secure, scalable and innovative data solutions that enable better decision-making, support digital transformation, and accelerate the adoption of AI and Generative AI technologies. You'll play a key role in designing, building and optimising data pipelines and integration solutions within a modern cloud-based environment, working alongside talented engineers, architects and business stakeholders. What You'll Be Doing Building and maintaining robust data pipelines for ingestion, transformation and curation of data. Designing secure, reliable and high-performance data integration solutions. Developing and supporting enterprise-scale data platforms and services. Working closely with stakeholders to...
IR35 Status:
Inside IR35

CV-Library Telford, Shropshire Contractor
CL
Jun 20, 2026  
Technical Architect
MERITUS are recruiting for an SC Cleared Technical Architect / Solution Architect to join our client delivering secure, large-scale technology programmes within the Defence and Central Government sector. TECHNICAL ARCHITECT - 12 MONTH CONTRACT - UP TO £800 PER DAY - INSIDE IR35 - READING (2 DAYS ON-SITE) - SECTOR: DEFENCE / GOVERNMENT As a Technical Architect, you will lead the design and assurance of complex, secure systems across major government programmes. You will ensure architectural integrity across the full delivery lifecycle, working closely with engineering, delivery, and security teams to design scalable, compliant, cloud-based solutions. Lead technical design of large-scale, complex systems Define and govern solution architecture and technical designs Ensure alignment with security, performance, scalability, and compliance standards Work closely with engineering, delivery, and business stakeholders Provide technical governance, assurance, and risk evaluation Design...
IR35 Status:
Inside IR35

CV-Library Reading, Berkshire Contractor
CL
Jun 18, 2026  
AI Application/Big Data Engineer
AI Application/Big Data Engineer 6-Month contract - Inside IR35 - market rate London based - hybrid working - up to 3 days a week onsite Finance sector - must have previous experience Role Overview Senior AI / Data Engineer responsible for designing, building, and optimizing AI-driven data pipelines and integrations to enable a QAS-powered response suggestion capability embedded in Salesforce Service Cloud. The role focuses on scalable data processing, LLM integration, and continuous model improvement using production telemetry. Responsibilities Design and implement Salesforce ↔ QAS integration architecture Build and optimize data pipelines supporting AI inference and feedback loops Develop backend services / APIs enabling response suggestion workflows Integrate LLM capabilities (Amazon Bedrock) for response generation and embeddings Enable continuous model tuning via: telemetry data quality scoring usage analytics Work with structured and unstructured data sources:...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
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