USD 142000–189500/yr

Principal RF Engineer I

United StatesWestminsterFull-timelead
OtherRf Engineer
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Overview

Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident,

Technical Tools
OtherRf Engineer
Please Note: To conform with the United States Government Space Technology Export Regulations, the applicant must be a U.S. citizen, lawful permanent resident of the U.S., conditional resident, asylee or refugee (protected individuals as defined by 8 U.S.C. 1324b(a)(3)), or eligible to obtain the required authorizations from the U.S. Department of State.

At CesiumAstro, we are developers and pioneers of out-of-the-box communication systems for satellites, UAVs, launch vehicles, and other space and airborne platforms. We take pride in our dynamic and cross-functional work environment, which allows us to learn, develop, and engage across our organization. If you are looking for hands-on, interactive, and autonomous work, CesiumAstro is the place for you. We are actively seeking passionate, collaborative, energetic, and forward-thinking individuals to join our team.

We are actively seeking passionate, collaborative, energetic, and forward-thinking individual to join our team as a Principal RF Engineer I. The ideal candidate has extensive experience in board-level and system-level RF electronics design. If you enjoy working in a startup environment and are passionate about developing leading-edge phased arrays for satellites, spacecraft, and aerospace systems, we would like to hear from you.
 
In this position, you will be responsible for RF circuits, modules, and systems through all phases of the development process. The ideal candidate will be proficient in board-level schematic design and PCB layout of RF circuits, system-level communications concepts such as link budgets and modulation schemes, and end-to-end RF product development. The work will include many aspects of phased array communication systems, including RF front ends, frequency converters and synthesizers, filters, beamformers, power dividers, and phased array antennas.
 
As a principal hardware team member, you will be responsible for RF system and hardware designs from initial concept through requirements definition, architecture definition, part selection, detailed design, analysis, manufacturing, testing, qualification, and in-orbit support of Cesium's products. Hardware design tasks will include block diagrams, detailed schematics, PCB layout and routing, simulations, and test design. Principal Engineers also serve as technical and professional mentors in their field and may be given the opportunity to lead company programs.
 
The successful candidate will also present engineering design review materials to our customers and executive team, as well as participate in proposal-writing efforts. As such, excellent written and verbal communication skills are required.
  • Bachelor of Science (BS)) degree in Electrical Engineering (EE) from an accredited university or institution.  Master of Science (MS) desired.
  • Minimum of 9 years of industry experience in design and analysis of RF electronics and systems.
  • Expert-level proficiency in professional simulation tools such as CST and ADS, as well as EDA tools such Altium.
  • Extensive hands-on experience with lab instruments such as vector network analyzers, spectrum analyzers, signal generators, and oscilloscopes.
  • Excellent written and verbal communication skills.
  • 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.
  • Listing Details

    Posted
    March 6, 2026
    First seen
    March 26, 2026
    Last seen
    April 22, 2026

    Posting Health

    Days active
    27
    Repost count
    0
    Trust Level
    41%
    Scored at
    April 23, 2026

    Signal breakdown

    freshnesssource trustcontent trustemployer trust
    Cesiumastro
    Employees
    350
    Founded
    2017
    View company profile
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    CesiumastroPrincipal RF Engineer IUSD 142000–189500