Date posted: 25 Nov 2021

Aerospace and defence equipment wouldn’t be able to operate if it wasn’t for avionic manufacturers like Chelton. We pride ourselves on working with customers and being attuned to industry trends to expand the possibilities of aerospace and defence and give our customers a helping hand in achieving mission success. Working in challenging environments, producing failsafe technology with smart thinking – it’s just what we do. But we couldn’t do it without the Chelton A-team.

That is why we are searching for a Principal Engineer to join our workforce.

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 Business Unit develops the next generation of Chelton’s cutting-edge direction finding and GPS protection devices.

These devices are an expanding market for Chelton and are required to meet the growing threat of intentional GPS interference, which causes severe issues for GPS reliant systems worldwide.

Key Responsibilities

  • 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.

Person Specification 

  • Prior experience as a Senior/ Principal/ Technical Lead engineer providing technical guidance in support of a project.
  • Experience of taking concept through to completion.
  • Design experience and/or appreciation of the following areas:
    • RF & Microwave antenna Systems.
    • Use of tools such as ADS (keysight/AWR microwave office), Altium & PSpice
    • Electronics technology and interfaces
    • RF Up/down conversion
    • wideband ADC DAC
    • RS232/422, UART, SPI, I2C
  • Experience with Laboratory test equipment: Spectrum Analyser, Signal Analyser, Signal Generator, and Oscilloscope.
  • Willing to apply a hands on approach

It would be advantageous if you had:

  • Experience of platform integration and design certification
  • Design experience and/or appreciation of the following areas:
    • Analogue, Digital and power supply Electronics design.

    • Embedded Software, Firmware and Digital Signal Processing.

    • Integration of hardware with software and firmware


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

This role will be based at Marlow. 

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.