On‑Site RF Systems Engineer — Beamforming & Antennas

Quell; Cambridge; On-site; GBP 55,000 - 75,000; Full time

Job summary

Quell, a British defence and security AI start-up near Cambridge, is seeking exceptional RF Engineers at all levels to design, implement, and optimise high-frequency RF systems for sensing and communications. The role covers antennas, beamforming, SDRs, and RF front-end components in a multidisciplinary team.

Candidates with a strong foundation in RF theory, hands-on lab experience, and the ability to obtain security clearance are encouraged to apply.

Qualifications

• Bachelor’s or Master’s degree in Electrical Engineering or related discipline.
• 3–5 years RF design/testing experience (5+ for senior roles; entry-level considered with strong fundamentals)
• Hands-on experience with RF lab equipment (spectrum analysers, signal generators)
• Strong understanding of phased-array antennas and beamforming
• Experience with SDRs and tools such as GNURadio
• Solid knowledge of RF and microwave theory
• Experience with RF front-end components (LNAs, PAs, filters)
• Security clearance (or ability to obtain one)
• Linux experience and programming skills preferred

Responsibilities

• Designing and optimising RF systems and components (e.g., antennas, filters, amplifiers)
• Working on phased-array antenna design and beamforming technologies
• Testing and validating RF hardware for performance, reliability, and regulatory compliance
• Performing RF simulations using industry tools and modelling environments
• Collaborating with cross-functional teams to integrate RF components into larger systems
• Documenting test results, maintaining records, and ensuring compliance with relevant standards

Skills

RF design

Phased-array antennas

Beamforming

RF theory

Modulation standards

Education

Bachelor’s or Master’s degree in Electrical Engineering

Tools

GNU Radio

SDRs

Spectrum analyzers

Signal generators

Job description

Quell, a British defence and security AI start-up near Cambridge, is seeking exceptional RF Engineers at all levels to design, implement, and optimise high-frequency RF systems for sensing and communications. The role covers antennas, beamforming, SDRs, and RF front-end components in a multidisciplinary team.

Candidates with a strong foundation in RF theory, hands-on lab experience, and the ability to obtain security clearance are encouraged to apply.