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Contractor 9
Engineering Inside IR35 software test engineer

9 software test engineer jobs found

CL
Mar 12, 2026  
Senior Software Engineer in Test
Job Title: Senior Software Engineer in Test Type: Inside IR35 Contract Rate: £600-£650 per day Duration: 6 months minimum (likely to extend) Location: London - 3 days on site (Canary Wharf)  A large fintech business are looking for a senior-level quality engineer with a strong software engineering mindset to help shape and safeguard new UI and platform capabilities across complex workflow-driven systems on a contract-basis. This role sits embedded within product engineering, operating in a shared ownership model alongside Java and React developers, with a heavy emphasis on automation. What you’ll be doing Building and maintaining automated coverage across the stack, from APIs through to user journeys, using established internal tooling and frameworks. Evolving existing test frameworks where required, while staying aligned with core engineering standards. Working closely with frontend and backend engineers to ensure critical paths are well understood, well tested, and...
IR35 Status:
Inside IR35

CV-Library London, UK Contractor
CL
Mar 17, 2026  
HIL Test Engineer - Steering Systems
Our premium brand Automotive client is currently recruiting for the following role: HIL Test Engineer - Steering Systems - £27.21/hr (Inside IR35) - Warwickshire - 8 Months (potential for yearly renewal) Duties: - Develop test cases to be executed within the Steering System HIL. - Implement existing JLR Vehicle test procedures in Steering HIL environment. - Operate the Steering System HIL rig. - Develop analysis methods and metrics to judge test case results. - Liaise with internal customers to satisfy test requests. - Characterise and compare different steering systems and generate reports. - Correlate Virtual models with Steering System HIL data and vehicle data. Skills: - Extensive experience in HIL testing: DSPACE, XPACK4 or similar. - Good knowledge of Vehicle Dynamics principles. - Significant experience in mechatronic systems validation and verification. - Experienced in vehicle simulation software packages such as Matlab/Simulink, IPG Carmaker or similar. - Experience in...
IR35 Status:
Inside IR35

CV-Library Warwick, UK Contractor
CL
Mar 15, 2026  
Embedded Systems Engineer
Copello are seeking an experienced Embedded Systems Engineer for a 3–6 month contract with a leading defence organisation based in Buckinghamshire. This is a technically challenging role within a highly regulated environment, supporting the development of advanced systems, ideally within an avionics or wider defence context. The successful candidate will combine strong hands-on embedded development expertise with the ability to lead and coordinate a small engineering team. This role is inside IR35 and requires candidates to be eligible for SC clearance. Key Responsibilities * Lead and manage a small embedded systems engineering team, providing technical direction and oversight * Design, develop and debug embedded software for ARM-based SoCs * Develop and maintain secure boot chains and low-level board support packages * Work across bare-metal and RTOS environments * Support integration, verification and validation activities within a defence framework * Perform...
IR35 Status:
Inside IR35

CV-Library High Wycombe, Buckinghamshire Contractor
CL
Mar 13, 2026  
Senior Engine Control Software Engineer
Senior Engine Control Software Engineer Location: Hethel, UK Contract: Inside IR35 | 3 Month Contract Role Summary The Senior Engine Control Software Engineer will play a pivotal role within a high-performance powertrain environment, leading the design and delivery of embedded control software for next-generation V6 and V8 turbocharged engines and transmission platforms. This Senior Engine Control Software Engineer position focuses on robust, production-level ECU software, ensuring quality, compliance, and performance across demanding operating conditions. Role & Responsibilities Lead development of embedded engine control software for advanced propulsion systems Implement control and diagnostic software for new engine and transmission features using C/C++ Collaborate with Controls Design Engineers, Systems Engineers, and Architects to define and align software and functional architectures Develop, test, and maintain production-level ECU software ensuring MISRA compliance...
IR35 Status:
Inside IR35

CV-Library Norwich, 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
Mar 11, 2026  
Structural Engineer (Assistant to Lead): Buildings
Structural Engineer - Contract (Inside IR35) Duration: 12 months This role combines responsibilities across Assistant, Senior, and Lead Structural Engineering levels. Overview An opportunity is available for Structural Engineers at varying experience levels to support and deliver building structures projects. The role involves contributing to high-quality engineering design, governance, and performance across a diverse project portfolio. Key Responsibilities Core Responsibilities (All Levels) Produce engineering deliverables including calculations, reports, drawings, and documentation. Apply structural engineering principles and relevant standards, including Eurocodes and Building Regulations. Use design and analysis software such as 3D CAD tools, Tekla Structural Designer, and Tekla Tedds. Support compliance with technical governance, safety legislation (including CDM 2015), and quality processes. Communicate effectively within project teams and with stakeholders....
IR35 Status:
Inside IR35

CV-Library United Kingdom Contractor
CL
Mar 07, 2026  
Lead Electrical Protection Engineer
Contract Details & Working Arrangement * Rate: £440 per day * Inside IR35 * 6-month contract with potential for extension * Hybrid working: 3 days on site and 2 days remote per week * Tuesday and Wednesday are mandatory on-site days (Third on-site day is flexible) * No travel required About the job Vickerstock are proud to be working in partnership with a leading global energy and grid solutions provider to recruit a Lead Electrical Protection Engineer on a contract basis. This is a high-impact role offering exposure to complex grid automation and substation protection projects, with responsibility spanning design, testing, and commissioning. The Role As Lead Electrical Protection Engineer, you will take technical ownership of protection system design and delivery, acting as the key technical interface between customers and the wider engineering community. Reporting directly to the Engineering Team Leader, you will lead engineering activities from initial design...
IR35 Status:
Inside IR35

CV-Library Stafford, Staffordshire Contractor
CL
Dec 28, 2025  
Electronics Design Engineer
World Class Defence Organisation based in Stevenage (the role can be a split of working Onsite and Working From Home) is currently looking to recruit a number of Electronics Design Engineer subcontractors on an initial 12 month contract.    Electronic Design Engineers with excellent skills in Analogue Design or Digital Design or Power Design or FPGA are sought after.    Job Title: Electronics Design Engineer Rate: £58 per hour Overtime Rate: Hours worked over 37 hours per week will be calculated at ‘time and a quarter’ Location: Stevenage Hybrid / Remote working: This role will involve some remote working opportunities Contract: 37 Hours per week Duration: 12 Months (initially and then ongoing and long-term thereafter) IR35 status: Inside IR35 (Umbrella)   Electronics Design Engineer Job Description: The Electronic Engineering function is a friendly and supportive environment. Within the function, you will be working with other engineers who have a collective wealth of...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
CL
Dec 27, 2025  
Safety Engineer
World Class Defence Organisation based in Stevenage is currently looking to recruit a Safety Engineer Subcontractor on an initial 12 month contract.  (The role will be split of working Onsite and Working From Home).    Contract Duration: 12 Months (initially and then ongoing thereafter) Hourly Rate: £80ph (Umbrella) 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 2-3 days per week onsite and 2-3 days working from home. 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.   Safety Engineer Job Description: An opportunity has arisen for an engineer to exploit their safety engineering skills to influence the safety aspects of one of our technically complex products. While exploring the boundaries of best practice, this will involve...
IR35 Status:
Inside IR35

CV-Library Stevenage, UK Contractor
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