Senior Software Engineer (C# / JavaScript)

Senior Software Engineer Surrey We are currently partnering with a specialist engineering organisation operating within the Defence sector who are looking for a Senior Software Engineer to join their established engineering team. The company delivers complex, high-integrity systems within an R&D-led environment, offering the opportunity to work across the full development lifecycle on technically challenging projects. This is a key role within the software function, combining hands-on development with technical leadership. You will take ownership of software design and delivery, support project execution, and mentor engineers within a collaborative team environment. Lead architectural and detailed software design activities Develop and test software solutions in C++ to industry standards Translate system requirements into robust software designs Work closely with electronics, firmware, and systems engineering teams Ensure software compliance with project and organisational standards Support estimation, planning, and delivery against project timelines Mentor and supervise software engineers within the team Degree in Engineering, Mathematics, Science, or related field Strong experience in software architecture and design Proficiency in C++ development within Linux and/or Windows environments Proven experience in software verification and validation Experience leading or mentoring software engineers Ability to obtain SC or DV UK security clearance Full UK driving licence Willingness to travel between sites as required