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Salary
≈ $85k – $170k per year (Estimated)
Location
In office (Melbourne)
Seniority
Middle · 2+ years exp
Employment
Full-Time

Confirmed on the employer's own hiring board on Sep 26, 2026. First seen by Alion on Sep 23, 2026. CesiumAstro scores B on the Alion truth index.

Overview
Company
Impact
Profile match
CesiumAstro is an American company founded in Austin in 2017 that builds active phased array communications payloads for satellites, aircraft and defence platforms. Its systems are software-defined and electronically steered, which lets a moving platform track several links at once without mechanical antennas, and the company manufactures them in house rather than integrating third-party subsystems. It sells mainly to defence customers and satellite operators, has raised venture funding from investors including Airbus Ventures and Lightspeed, and operates facilities in Austin, Colorado and the United Kingdom.

We are looking to add an RF Engineer II to our team. The ideal candidate has experience in board-level RF electronics design. If you enjoy working in a startup environment and are passionate about developing leading-edge RF hardware for satellites, spacecraft, and aerospace systems, we would like to hear from you.

In this position, you will assist with the design, analysis, development, integration, and testing of radio frequency (RF) systems supporting products and platforms. This role contributes to product development by performing RF analyses, evaluating system performance, and resolving routine RF engineering challenges to ensure products satisfy RF performance, reliability, quality, and mission requirements.

Working cross-functionally with RF, antenna, electrical, mechanical, manufacturing, quality, and systems engineering teams, this role supports RF engineering activities from concept development through product qualification.

JOB DUTIES AND RESPONSIBILITIES

  • Assist with the design and development of RF circuits, transceivers, receivers, transmitters, amplifiers, filters, and microwave components.
  • Perform RF analyses, circuit simulations, link budget calculations, impedance matching, frequency planning, and performance evaluations.
  • Review engineering requirements, RF specifications, simulation results, and technical documentation supporting RF design readiness.
  • Perform RF verification, qualification, validation, and troubleshooting activities.
  • Analyze RF measurements, simulation data, laboratory results, and engineering observations to identify trends and recommend solutions.
  • Support root cause investigations, engineering changes, corrective actions, and RF performance improvements.
  • Collaborate with RF, antenna, electrical, mechanical, manufacturing, quality, and systems engineering teams supporting RF product development.
  • Develop engineering reports, simulation documentation, RF measurement reports, and engineering change documentation.
  • Participate in design reviews, engineering investigations, product integration, and qualification activities.
  • Review RF engineering methods, simulation practices, and development processes to identify opportunities for improvement.
  • Apply RF engineering methodologies, industry standards, company procedures, and customer requirements throughout product development.
  • Contribute to continuous improvement initiatives that enhance RF performance, engineering efficiency, reliability, and quality.

JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS

  • A Bachelor of Science (BS) or Master of Science (MS) degree in Electrical Engineering (EE) from an accredited university or institution.
  • 2+ years of industry experience in design and analysis of RF electronics design, analysis, test, and troubleshooting.
  • Experience with professional simulation tools such as CST and ADS, as well as EDA tools such Altium.
  • Hands-on experience with lab instruments such as vector network analyzers, spectrum analyzers, signal generators, and oscilloscopes.
  • Excellent written and verbal communication skills.

PREFERRED EXPERIENCE

  • Experience with MATLAB or other programming languages.
  • Experience in aerospace electronics design, development, and qualification.
  • Knowledge of worst-case circuit analysis, failure method and criticality analyses, and reliability analysis.
  • Experience with antenna design.
  • Knowledge of EMI/EMC design and mitigation techniques.
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