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Principal RF Engineer I Verified today

CesiumAstro · Cambridge, United Kingdom · RF & Comms · first seen 2026-07-22

CesiumAstro develops communication systems for satellites, UAVs, launch vehicles and airborne platforms. We are seeking a Principal RF Engineer I to join our Cambridge team.

Your responsibilities

You will be responsible for RF circuits, modules and systems through all phases of development, from initial concept through in-orbit support. Your work will include:

  • Block diagrams, detailed schematics, PCB layout and routing for RF circuits and systems
  • System-level design of phased array communication systems including RF front ends, frequency converters and synthesizers, filters, beamformers, power dividers and phased array antennas
  • Requirements definition, architecture definition and part selection
  • Analysis, simulations and test design
  • Manufacturing support, testing and qualification
  • Presenting engineering design review materials to customers and executive team
  • Participating in proposal-writing efforts
  • Technical and professional mentorship of team members

What you need

  • Bachelor of Science degree in Electrical Engineering from an accredited university; Master of Science desired
  • Minimum 9 years industry experience in RF electronics and systems design and analysis
  • Expert-level proficiency in CST and ADS simulation tools, and Altium EDA tools
  • Extensive hands-on experience with vector network analyzers, spectrum analyzers, signal generators and oscilloscopes
  • Excellent written and verbal communication skills

Preferred experience

  • Python or other programming languages
  • Aerospace electronics design, development and qualification
  • Worst-case circuit analysis, failure method and criticality analyses, and reliability analysis
  • Antenna design
  • EMI/EMC design and mitigation techniques

This role is subject to security and export control restrictions. Factors including nationality, previous or dual nationalities, place of birth and country of residence may limit eligibility.

Principal RF Engineer I at CesiumAstro | Flight Proven Space