Date posted: 23 Mar 2022

An excellent opportunity has arisen to join the newly formed Chelton Avionics Business Unit as a Principal Engineer. This Business Unit develops the next generation of Chelton’s cutting-edge direction finding and GPS protection devices.

As a Principal Engineer, you will help drive the introduction of new products and assist in developing a range of novel processing techniques in support of anti-jamming, direction finding, and beam-forming applications. Your role will involve a range of research, data analysis and market-driven product development activities.

You will be working in the Avionics Business Unit alongside a multi-discipline team of Engineers, in an Agile based engineering approach. 

This role will be based at our Head Office in Marlow, Buckinghamshire. 


  • Design novel electronic communication equipment for the aviation and military industries.
  • Simulation and modelling of RF systems using latest toolsets
  • Collaborating with cross functional teams to create high performance products
  • Requirements capture, allocation, derivation, validation and verification.
  • Contribute to the design of system, sub-system and equipment architecture definition, design and analysis
  • Preparation of technical specification and other project documentation.
  • Preparation and presentation of technical design reviews.
  • Support preparation of technical estimates for non-recurring costs and manpower requirements.

Skills & Qualifications

  • Prior experience as a Senior/ Principal/ Technical Lead engineer providing technical guidance in support of a projects
  • Experience of taking concept through to completion.
  • Willing to apply a hands on approach
  • Experience with Laboratory test equipment: Spectrum Analyser, Signal Analyser, Signal Generator, and Oscilloscope.
  • Design experience and/or appreciation of the following areas:
    • RF & Microwave design e.g. low noise front-end receivers
    • Use of tools such as Keysight ADS/AWR Microwave Office/CST, Altium & PSpice
    • RF Up/down conversion
    • RF sampling ADC / DAC
    • Interfaces such as RS232/422, UART, SPI, I2C, JESD204B


  • Competitive salary
  • Bonus
  • Private medical insurance
  • 25 days holiday, plus bank holidays, with the opportunity to buy and sell leave
  • Hybrid working
  • Pension contribution matched up to 8%
  • Employee Assistance Programme
  • Flexible benefits scheme 

About Chelton

Chelton design and manufacture avionic antennas and electronic control systems for military and civil communications, navigation and search and rescue applications. We pioneered frequency agile VHF tuneable antennas and continue to be a key supplier to major avionics companies. Our GPS anti-jam technology utilises state of the art DSP algorithms with an active antenna to eliminate both narrow-band and wide-band jamming signals. We have world leading technology in Ground Penetrating Radar and RF interference mitigation. Both military and civil users rely on our direction finding systems for search and rescue operations.

No two days are ever the same at Chelton, you’ll constantly be faced with new challenges to overcome. From the very beginning, you will be able to take full ownership and accountability to see products through to success. After all, where would we be if it wasn’t for the people behind the products?

If you’re looking to leave your mark on the world, why not choose the exhilarating world of aerospace and defence and better yet, join Chelton for your chance to innovate, create and excite.