Salary: £45,000 - 80,000 per year Requirements: We require ISTQB Foundation level knowledge. We need a strong background in testing complex real-time embedded systems. We require proficiency in test automation frameworks and scripting languages such as Python, C++, or similar. We need a solid understanding of the software development lifecycle (SDLC) and Agile methodologies. Defence or Electronic Warfare domain experience is desirable. Experience working towards RTCA-DO178C is desirable. We need excellent analytical and problem-solving skills. You must hold or be eligible to obtain a high level of UKSV Security clearance. Responsibilities: We create test cases, test procedures, and automated test scripts for embedded systems. We perform integration, system, and regression testing on mission-critical software. We collaborate with developers and systems engineers to identify defects and drive resolution. We analyse test results, produce detailed reports, and provide recommendations for improvements. We ensure compliance with company standards and internal processes. Technologies: Embedded ISTQB Python Security ARM More: We are hiring a Software Test Engineer for a 12-month contract based in Luton, offering pay of up to £74 per hour inside IR35. Due to the nature of the work, the successful candidate must hold or be eligible to obtain a high level of UKSV Security clearance. We are a specialist talent acquisition and management consultancy supporting complex technical recruitment across critical industries. last updated 21 week of 2026