Senior Software Development Engineer Location: Malvern, Farnborough and Southampton/Portsmouth (Hybrid working available) Package: Competitive Salary + Benefits Hours: 37 hours per week Security Clearance: SC clearance (or eligibility) required About the Role We are seeking a Senior Software Development Engineer to join a highly capable engineering team delivering complex, mission-critical systems within the defence and national security domain. You will work on projects spanning the full technology lifecycle - from early proof-of-concept and demonstrators through to fully deployed production systems - across a range of advanced capability areas. This is an opportunity to work with cutting-edge technology alongside experienced engineers, scientists and customer stakeholders. What You’ll Be Doing Supporting the delivery of advanced software projects across multiple technology areas, including RF/Optical Communications, RADAR/Electronic Warfare, GNSS, Cyber/Crypto-Security and Joint Air, Land and Maritime domains Designing, developing and testing high-quality software in line with industry best practice Applying your expertise across the full software development lifecycle Contributing to and influencing systems architecture and technical design decisions Collaborating with multidisciplinary engineering teams and customer-facing delivery teams Championing modern development practices to enable efficient delivery and high-quality outcomes Building strong relationships within the customer community to support ongoing programmes and future growth Essential Experience Strong understanding of the software development lifecycle with experience delivering complex software systems Experience contributing to and influencing systems architecture and design Proficiency with Java , Spring , and React Experience with Test-Driven Development (TDD) Strong background in Agile software engineering practices (Scrum, CI/CD, BDD) Experience using Git , GitLab , and Jira to manage and drive development Location & Working Pattern This role is based in Malvern, Portsmouth or Farnborough with hybrid working available, depending on project and security requirements. Benefits Competitive salary Matched pension contribution with life assurance Generous holiday allowance, with the option to purchase additional days Private Medical Insurance, Dental Insurance and Health Cash Plan options Employee discount portal covering insurance, travel, leisure and retail Volunteering opportunities and support for the Armed Forces community Security Clearance Applicants must hold active SC clearance as a minimum. Existing clearance may be transferable. Due to the nature of the work, nationality or residency restrictions may apply. Reasonable Adjustments: Respect and equality are core values to us. We are proud of the diverse and inclusive community we have built, and we welcome applications from people of all backgrounds and perspectives. Our success is driven by our people, united by the spirit of partnership to deliver the best resourcing solutions for our clients. If you need any help or adjustments during the recruitment process for any reason , please let us know when you apply or talk to the recruiters directly so we can support you. TPBN1_UKTJ