Want to join a company that is a recognised innovation and technology leader, tackling highly complex challenges across multiple defence and aerospace domains? Join a business who deliver advanced systems and services to customers worldwide and is widely regarded as a trusted, high-performing organisation within its market! Important: All applicants must be able to obtain Security Clearance *minimum 5 years UK residency* Working: On site Company Highlights: Join a globally recognised technology and defence leader, repeatedly awarded for innovation, patents and engineering excellence across aerospace, defence, space and cyber. A organisation trusted by governments worldwide, delivering mission-critical systems and recognised with Gold status by the UK Ministry of Defence for its support of the armed forces community. Be part of a business consistently ranked among the top innovators in the aerospace and defence sector, combining cutting-edge technology with long term programme stability, including high-profile contracts with government and allied partners worldwide. Explore the chance to work on cutting-edge, nationally significant projects with real-world impact, not theoretical R&D. A business, known for a strong culture of innovation, inclusion and long term career development, backed by the scale and stability of a global industry leader. Senior Test Development Engineer This is an excellent opportunity for an experienced engineer looking to further develop their technical expertise within a strong R&D environment. As the team continues to grow, there will also be clear opportunities for progression into more senior roles. In this position, you will be responsible for the design, manufacture, verification, validation, and lifecycle support of test equipment at board, sub-system, and system level. You will contribute to advanced technologies supporting Control Actuation Systems, Guidance Electronics, and GPS Anti-Jamming capabilities across land, sea, air, and space domains. Key Responsibilities Design and develop functional test equipment for electronic systems Lead and support hardware and software integration, including troubleshooting activities Provide lifecycle and production support, including issue resolution and obsolescence management Collaborate with cross-functional engineering teams to deliver robust and scalable test solutions Lead design reviews and produce high-quality technical documentation Mentor and support the development of junior engineersEssential Skills & Experience Test development hardware design Creation of wiring schedules System interface design Working knowledge of NI LabVIEW and/or TestStand Strong technical documentation skills Experience handing over designs into production environments Excellent hardware troubleshooting capability Experience supporting and debugging system integration Eligibility for UK Security Clearance (minimum BPSS)Desirable Experience Significant industry experience in test development Knowledge of PXI/LXI test architectures Understanding of measurement uncertainty and its application Experience with LabVIEW, CVI, TestStand, and C# Even If you feel like you don't meet every requirement, we encourage you to reach out and apply