Principal RF Engineer

Principal RF Engineer – High-Performance Radio Systems – Cambridge – HybridSalary: £65k – £80k + benefits

An established leader in mission-critical communications is seeking a Principal RF Engineer to drive the design and development of next-generation RF subsystems for advanced radio terminals.

This is a hands-on, technically focused role for an experienced RF Engineer who thrives on solving real-world signal challenges across frequencies. You'll work closely with cross-disciplinary teams to design, test, and optimise RF architectures that meet the stringent demands of secure and reliable communication systems.

Responsibilities:

• Lead RF design and development for radio terminal products (Tx/Rx, PA, antenna, and matching networks)

• Own complete RF subsystem delivery from specification to integration

• Collaborate with baseband, audio, and software teams to ensure end-to-end performance

• Create and review schematics, guide PCB layout, and support EMC/EMI compliance

• Conduct testing, validation, and optimisation using anechoic chambers and other RF lab environments

• Generate technical documentation (design specs, test plans, performance reports)

Requirements:

• Proven background in RF electronics design, ideally within comms or telecoms

• Solid experience in at least 3 key areas: RF Receivers, Transmitters, PAs, Frequency Generators, Matching Networks, or Antennas

• Hands-on with component-level work including rework/mods and sensitive PCB handling

• Comfortable working across frequency ranges

• Familiar with simulation tools (ADS, CST) and lab testing procedures

• Strong documentation, problem-solving, and communication skills

This is a chance to join an innovative engineering team building secure communications solutions used across critical sectors worldwide. If you're ready to make an impact in the RF space and want to work on challenging, high-performance designs – apply now