We are recruiting multiple experienced Contract Software Engineers to support current and future programmes within a leading defence and Electronic Warfare organisation. These roles sit within a mature engineering environment, delivering mission-critical software across advanced platforms. This advert covers two separate contract roles, each with its own focus, responsibilities, and skill requirements. Role 1: Contract Software Engineer C# .NET Location: Luton (Hybrid 4 days onsite, 1 day remote) Security Clearance: Full UK SC required (sole UK nationality essential) Role Summary We are seeking experienced C# .NET Software Engineers who can work with minimal supervision to deliver robust, high-quality software for current and future Electronic Warfare programmes. The role offers the opportunity to work within a mature development environment on cutting-edge defence technology. Key Responsibilities Develop robust applications using C# .NET within a Windows environment Take ownership of complex tasks across the full software lifecycle (requirements through to delivery) Apply object-oriented design principles and verification/validation techniques Work collaboratively within skilled Agile teams while maintaining independence Contribute to CI/CD pipelines and modern development practices Essential Skills and Experience Strong commercial experience with C# .NET, including web-based applications Solid understanding of object-oriented design and software development methodolo