Senior Software Engineer Stevenage, UK £55,000 £75,000 DOE Hybrid (35 Days Onsite Weekly) Were recruiting a Senior Software Engineer to join a cutting-edge technology team supporting complex defence and security systems. This is an opportunity to work on high-impact, mission-critical software projects in a collaborative, agile environment with a multi-disciplinary team. The ideal Senior Software Engineer will have experience developing test software and a strong foundation in programming languages such as C, C++, or ADA. Youll play a key role in supporting software solutions that interface with test equipment to verify and validate advanced systems across their lifecycle from development through production and field deployment. What were looking for: Strong programming ability in C, C++, or ADA Experience in test software or electronics engineering with a willingness to specialise in software Excellent problem-solving skills and a collaborative, solution-focused mindset Clear communication and the ability to work with technical teams across multiple domains Eligibility to work in the UK and obtain security clearance Key responsibilities of the Senior Software Engineer include: Designing and developing software that drives test equipment for complex product verification Collaborating with stakeholders in Systems, Electronics, and Validation teams to deliver robust software solutions Supporting product certification, manufacturing, and field testing through innovative test systems Working across software, hardware, and simulation disciplines to ensure full functional coverage Applying analytical and design thinking to solve technical problems beyond traditional software boundaries Benefits include: Annual bonus (up to £2,500) Up to 14% pension contribution Paid overtime options Flexi leave (up to 15 additional days annually) Enhanced parental and family leave Subsidised meals, free parking, and excellent site facilities If youre ready to take your career as a Senior Software Engineer into new territory and work at the forefront of innovation, get in touch. Linked In: Ciaran Cleland Reference: AMC/CCL/SSE