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RF & Payloads

Staff Antenna Design Engineer

CesiumAstro logoCesiumAstro$158,000–$189,000/yrWestminster, CO, United StatesFull-timePosted 2mo ago
  • US citizenship

How this pay compares

This posting states $158k–$189k a year. Open RF engineer jobs in Colorado post a median of $158k a year, the middle half $131k–$204k, across 49 jobs that state their pay, so this one is within the middle half of what they post.

RF and communications engineers in Colorado: pay by town and employer

About the job

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. The Skylark product line is focused on the rapid design, build, and test of cutting-edge active phased array antennas (AESA) for terrestrial and airborne applications.

Current programs span high-power, large-scale ground terminals for missile defense to commercial airline and helicopter connectivity solutions. We are looking to add a Staff Antenna Design Engineer to our team. The ideal candidate has experience in designing, simulating, building, and testing high-frequency antennas made in printed circuit board (PCB) processes.

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.

As a CesiumAstro hardware team member, you will be responsible for antenna designs from initial concept through requirements definition, topology selection, detailed design, analysis, optimization, manufacturing, testing, qualification, and in-orbit support of CesiumAstro's products.

The work will include many aspects of phased array communication systems, including RF front-ends, beamformers, power dividers, and phased array antennas. 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. ## JOB REQUIREMENTS AND MINIMUM QUALIFICATIONS - Bachelor of Science (BS) degree or higher in Electrical Engineering or Physics from an accredited university or institution. - Minimum of 8 years of industry or university research experience in antenna design, analysis, optimization, fabrication, and test. - Phased array design and development. - Expert-level proficiency in 3D electromagnetic simulation tools such as CST or HFSS. - Strong experience with EDA tools such as 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 - Antenna design in frequency bands above 20 GHz. - Aerospace electronics design, development, and qualification. - EMI/EMC design and mitigation techniques.

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.

From CesiumAstro's job posting, checked 7 Nov 2026. The employer's own page is the final word on requirements and availability.

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About CesiumAstro

Software-defined radios, phased-array payloads and satcom terminals for space and defense.

Pay on its listings: 55.5% of its open jobs state an hourly rate

How it pays: Paid as an employee on CesiumAstro's own payroll (salaried or hourly, as each posting states).

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