Soma Capital Portfolio Jobs

Antenna Test Engineer



Quality Assurance
San Francisco, CA, USA
Posted on Sunday, September 10, 2023
Astranis is connecting the four billion people in the world who do not currently have access to the internet. We are building the next generation of smaller, lower-cost spacecraft to bring the world online.
We are well-funded by some of the best investors in the business and have raised over $400 million to date. We have a world-class team that is passionate about building amazing technology. And we have a fun and collaborative work environment where you will learn a lot and make a huge impact no matter where you are in your career.
Our team is growing fast. Apply now!

As an RF and antenna test engineer at Astranis, you will be responsible for developing and conducting tests of diverse antenna systems, and analyzing and documenting that data. Astranis GEO communication satellites rely on a wide array of antenna systems and RF components to fulfill their missions, and so the successful candidate must be proficient in test and analysis of many RF/antenna systems including reflector antennas, aperture and horn antennas, waveguides and waveguide-based ortho-mode transducers (OMT’s), polarizers, filters and diplexers, RF PCB’s, and more. You’ll measure antenna patterns, polarization purity, isolation, passive intermodulation (PIM), insertion and return loss, and sometimes EMI/EMC. Ultimately you'll prove that our designs work across environments to guarantee success on orbit.

In an ongoing effort to improve and standardize our test methods and infrastructure, you’ll procure and operate test hardware, work with mechanical engineers to design test fixtures, write test automation and analysis scripts, interface with various test and subsystem stakeholders, as well as with external test and hardware vendors. Familiarity with nearfield and farfield antenna test ranges, vector network and spectrum analyzers, calibration procedures, power supplies, and amplifiers and filters is required. Occasional travel to offsite test facilities is required.

Finally, strong verbal and written communication skills are invaluable in this role as the antenna team collaborates with other engineering disciplines to design and test hardware and eventually provide functioning systems to production. Astranis is developing multiple programs in parallel so an ability to multi-task and support simultaneous test campaigns is needed in this role.

This is an onsite role located at a world-class satellite design and integration facility in San Francisco, California.


  • Operate and maintain farfield antenna test range, EMI/EMC range and RF bench test instruments including VNA’s and Spectrum Analyzers.
  • Design, develop and implement the RF test hardware, calibration and test procedures, fixtures and test automation.
  • Analyze measured data based on an understanding of theoretical and expected performance. Document and share results.
  • Assist in recruiting, interviewing, and hiring additional teammates to our rapidly-growing team.

Skills and Experience

  • Experience in antenna and RF fundamentals and electromagnetics theory. Beneficial to have experience testing and measuring mmW devices.
  • Firm understanding of RF measurement theory and practice, including error budgets for measurements.
  • Proficient user of vector network analyzer (VNA), Spectrum/Signal analyzers, power meters, and calibration methods for waveguide and coaxial transmission lines.
  • Some familiarity with electromagnetic modeling tools such as Ansys HFSS or CST.
  • Demonstrated programming experience in Python or Matlab. This role entails generating and modifying analysis and test scripts.
  • Experience working in anechoic chambers and designing RF test solutions and fixtures.


  • Degree in EE or related field, preferably specializing in RF.
  • 2+ years of experience working in a hardware environment.
All our positions offer a compensation package that includes equity, robust benefits, and bonuses.

What we offer:
Base pay is a single component of Astranis's total rewards package, which may also include equity in the form of incentive stock options, performance bonuses, high quality company-subsidized healthcare, disability and life insurance benefits, flexible PTO, 401(K) retirement, and free on-site catered meals.
Astranis pay ranges are informed and defined through professional-grade salary surveys and compensation data sources. The actual base salary offered to a successful candidate will additionally be influenced by a variety of factors including experience, credentials & certifications, educational attainment, skill level requirements, and the level and scope of the position.
Base Salary
$115,000$150,000 USD
U.S. Citizenship, Lawful Permanent Residency, or Refugee/Asylee Status Required
(To comply with U.S. Government space technology export regulations, applicant must be a U.S. citizen, lawful permanent resident of the United States, or other protected individual as defined by 8 U.S.C. 1324b(a)(3))
Our mission and our products are meant to connect the world and everyone in it, regardless of gender, race, creed, or any other distinction. We believe in a diverse and inclusive workplace, and we encourage all people to join our team and bring their unique perspective to help make us stronger.
All employees of Astranis are required to be vaccinated by the start of their employment. Mandatory vaccinations support our commitment to making our workplace and public facilities as safe and welcoming as possible. Reasonable accommodations will be made for individuals who are not able to get the vaccine due to qualifying medical or religious reasons.