Date posted: 09 Mar 2022

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. 

Chelton are looking for a Firmware Engineer to join the team responsible for the design, development, and verification of embedded products. The development activities will range from low level research to market driven product developments.

As the Firmware Engineer working on product development your range of responsibilities will include adherence to development process, creation of requirements, development of architecture, and design and integration of modules.

Typical products with which this role would come into contact include digital beam forming applications, radio, direction finding and logic translators for the control of antenna systems.

This role will be based at our headquarters in Marlow, Buckinghamshire. Hybrid working is available.

Candidates must have the right to live and work in the UK. 


  • Development of architecture to fulfil system requirements
  • Creation of design and test requirements
  • Firmware design and code to implement requirements
  • Documentation of design
  • Working across a multidisciplinary team to ensure successful product integration
  • Hardware verification through test, measurement and debug
  • Technology studies
  • Work package estimation
  • Deliver on time and to budget

Experience and Qualifications 

  • Digital hardware design
  • Firmware lifecycle development
  • RTL design using VHDL
  • Verification through test bench and BFM design using VHDL/Verilog
  • Timing closure
  • Requirements capture
  • Good communication skills 

The ideal candidate will:

  • Impart knowledge and best practice
  • Have a background in DSP design and verification
  • Be familiar with all major FPGA families and microprocessors
  • Have an understanding of software and systems engineering principles
  • Work to design and coding standards
  • Work to configuration standards


  • 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 active and passive avionics 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.