RF & Communications Engineer – Defence Systems – SC Cleared SR2 is supporting advanced R&D and systems delivery within the UK Defence sector. We’re looking for skilled RF and Communications Engineers to design, integrate, and optimise cutting-edge systems supporting operations across Land, Sea, Air, and Space domains. Responsibilities: Design and develop RF systems across VHF to millimetre wave bands. Implement digital signal processing solutions using MATLAB, C/C++, or Python. Work on waveform design, testing, and performance analysis. Support secure communication architectures (Radio, Tactical Data Links, Satellite). Contribute to system integration and validation activities.Experience Required: Background in Defence, MOD, or secure communications environments. Hands-on experience with RF hardware, DSP, or embedded systems (FPGA desirable). Understanding of secure communications, encryption, and accreditation standards. Familiarity with systems engineering principles and testing processes. SC or DV clearance (essential).Join a team working on some of the most advanced Defence communications systems in the UK — delivering secure connectivity from seabed to satellite