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CesiumAstro creates out-of-the-box communication systems for space and airborne platforms.
The Role
Plan, set up, and execute antenna and RF measurement campaigns in anechoic chambers (near- and far-field), perform VNA calibration, spectrum analysis, DUT alignment, develop and document test procedures and analysis scripts, troubleshoot with design teams, and maintain chamber instrumentation.
Summary Generated by Built In
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’re seeking a Senior Antenna Test Engineer I with experience in RF anechoic chamber measurements and Antenna characterization to join our Test Engineering team. You’ll work closely with RF, antennas, and systems engineers to define, execute, and analyze antenna measurement campaigns — including radiation patterns, gain, efficiency, polarization, and over-the-air performance — using state-of-the-art chamber setups.
JOB DUTIES AND RESPONSIBILITIES
- Plan, setup, and execute antenna and RF measurement campaigns in anechoic chambers, including Near-Field and far-field radiation patterns, gain, efficiency, and polarization characterization.
- Perform VNA calibration and measurement, spectrum analysis, and signal generation.
- Align, position, and configure devices under test (DUTs), reference antennas, and positioners to maximize measurement fidelity.
- Develop, refine, and document test procedures, setups, and data and test analysis scripts.
- Collaborate with design and systems teams to troubleshoot anomalies and product development.
- Manage and maintain chamber instrumentation, cables, and ancillary RF equipment.
- Develop custom test code, to enhance test performance and reduce test time.
JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS
- Bachelor of Science (BS) or higher in Electrical Engineering, Physics, or a related field.
- 4+ years of experience in RF testing, with significant hands-on experience in anechoic chamber antenna measurements.
- Proficient with Vector Network Analyzers (VNA), spectrum analyzers, signal generators, and associated RF instrumentation.
- Demonstrated ability to perform pattern measurements, gain and efficiency extraction, and polarization characterization.
- Strong understanding of RF fundamentals: matching, S-parameters, near field and far-field measurements, and chamber effects.
- Experience with automated test procedures and data processing (Python and C#).
- Excellent written and verbal communication skills, with attention to detail in documentation and reporting.
PREFERRED EXPERIENCE
- Experience with phased array testing, antenna and phased array troubleshooting, and OTA testing.
- Antenna design experience.
- Familiarity with NSI control software and positioner automation.
- Prior aerospace or satellite RF test experience.
CesiumAstro considers several factors when extending an offer, including but not limited to, the role and associated responsibilities, a candidate’s work experience, education/training, and key skills. Full-time employment offers include company stock options and a generous benefits package including health, dental, vision, HSA, FSA, life, disability and retirement plans.
CesiumAstro is an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, disability, protected Veteran Status, or any other characteristic protected by applicable federal, state, or local law.
Please note: CesiumAstro does not accept unsolicited resumes from contract agencies or search firms. Any unsolicited resumes submitted to our website or to CesiumAstro team members will be considered property of CesiumAstro, and we will not be obligated to pay any referral fees.
Skills Required
- Bachelor of Science in Electrical Engineering, Physics, or related field
- 4+ years of experience in RF testing with hands-on anechoic chamber antenna measurements
- Proficient with Vector Network Analyzers (VNA), spectrum analyzers, and signal generators
- Ability to perform pattern measurements, gain and efficiency extraction, and polarization characterization
- Strong understanding of RF fundamentals: matching, S-parameters, near-field and far-field measurements, and chamber effects
- Experience with automated test procedures and data processing (Python and C#)
- Excellent written and verbal communication skills and attention to documentation
- Experience with phased array testing, antenna design, NSI control software, and OTA testing
- Prior aerospace or satellite RF test experience
CesiumAstro Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about CesiumAstro and has not been reviewed or approved by CesiumAstro.
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Healthcare Strength — Health coverage includes medical, dental, vision, life and disability insurance, plus FSAs and mental health benefits. Feedback suggests the health package is comprehensive for a growth-stage aerospace firm.
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Retirement Support — Offerings include a 401(k) with company matching and other retirement-plan elements. Feedback suggests core retirement mechanisms are in place alongside standard financial benefits.
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Leave & Time Off Breadth — Generous PTO, paid holidays, paid sick days, and bereavement leave are included. Feedback suggests time-off options are broad on paper across multiple leave types.
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The Company
What We Do
We build high-throughput, plug-and-play phased array communication payloads for space and airborne platforms. CesiumAstro’s full-stack, multi-mission hardware and software products enable a diverse range of commercial and defense objectives. Full-system engineering design is at the heart of every CesiumAstro product. We deliver high-performance solutions under rapid development timelines.
Why Work With Us
At CesiumAstro, we’re a team. We’re passionate, respectful, and determined colleagues ready to help at a moment’s notice. We’re mentors excited to enable our peers with the knowledge they need to succeed. Together, we’re visionaries committing to building memories that will last a lifetime.
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