← Back to jobs

Senior RF Test Engineer I
Posted 3 weeks ago• Electrical
Compensation
$120,000–$160,500/year
Job Description
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 looking to add a Senior RF Test Engineer I to our team. If you are great at what you do, enjoy working in a startup environment, and are passionate about developing critical test systems for leading-edge satellite, spacecraft, and aerospace communication systems, we would like to hear from you.
In this position, you are responsible for the design, analysis, and implementation of engineering test plans and procedures. The ideal candidate possesses a strong combination of hardware and software knowledge with proficiencies in RF measurements, test equipment (VSAs, VSGs, VNAs, etc.), test architectures, and automation. The successful candidate will work closely with multi-disciplinary teams to address company-wide hardware test needs. Experience with phased array testing is preferred.
Core day-to-day responsibilities include collaborating with design and test engineering teams to develop test requirements, mapping requirements to reusable test architectures and procedures, implementing test plans and procedures, and logging and presenting results to key stakeholders. Additional responsibilities include lab and equipment management and guiding key equipment purchase decisions.
Senior-level test engineers are distinguished by an ability to architect RF test systems, to draw insightful conclusions from test results, and to participate in “design for test” planning and review from the early stages of RF product development. Test engineers are core members of the Cesium technical team.
The successful candidate will 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.
JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS
PREFERRED 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.
Optimize Your Resume for This Job
Get a match score and see exactly which keywords you're missing
Ready to Apply?
This will take you to CesiumAstro's application page
Job Details
- Category
- Electrical
- Employment Type
- Contract
- Location
- Westminster, CO
- Posted
- Feb 6, 2026, 04:30 PM
- Listed
- Feb 6, 2026, 05:10 PM
- Compensation
- $120,000 - $160,500 per year
About CesiumAstro
Part of the growing space industry ecosystem pushing humanity toward interplanetary exploration.
More Roles at CesiumAstro

CesiumAstro
Electrical
Principal Electrical Engineer I - FlatSat Lead
Westminster, CO $151K - $182K Contract
3 hours ago
Electrical
3 hours ago
CesiumAstro
Software
Principal Ground Software Engineer I
Westminster, CO $142K - $190K Contract
3 hours ago
Software
3 hours ago
CesiumAstro
AvionicsGNC
Senior GNC Engineer I
Westminster, CO $133K - $160K Contract
4 hours ago
AvionicsGNC
4 hours ago
CesiumAstro
Electrical
Principal Electrical Engineer I - CDH
Westminster, CO $151K - $182K Contract
4 hours ago
Electrical
4 hours ago
CesiumAstro
AvionicsGNC
Principal GNC Engineer I
Westminster, CO $142K - $190K Contract
4 hours ago
AvionicsGNC
4 hours agoSimilar Electrical Roles

Thales Alenia Space
Electrical
Graduate Hardware Engineer
Bendigo, AU Full Time
22 hours ago
Electrical
22 hours ago
SpaceX
StarlinkElectrical
Sr. RF/Microwave Engineer (Silicon Engineering)
Redmond, WA $160K - $220K Full Time
1 day ago
StarlinkElectrical
1 day ago
SpaceX
StarlinkElectrical
RF/Microwave Engineer (Silicon Engineering)
Redmond, WA $123K - $145K Full Time
1 day ago
StarlinkElectrical
1 day agoFound this role interesting?