Design, simulate, build, and test high-frequency PCB antennas and phased array systems from concept through qualification. Perform EM simulation, hardware optimization, manufacturing handoff, lab measurements, and in-orbit support. Prepare design reviews, contribute to proposals, and communicate results to customers and leadership.
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 Principal Antenna Design Engineer I 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 Cesium 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 Cesium'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 9 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.
CesiumAstro Broomfield, Colorado, USA Office
105 Edgeview Drive, Broomfield, CO, United States, 80021
Similar Jobs
AdTech • Digital Media • Marketing Tech
Lead design and optimization of high-throughput data ingestion pipelines and Python-based microservices. Drive architectural decisions, performance tuning, observability, and scalability across distributed systems. Partner with platform, data, and product teams to standardize ingestion frameworks and enable analytics-ready data in Snowflake for reporting and downstream systems.
Top Skills:
AWSCi/CdDatabricksKubernetesMicroservicesPythonSnowflakeSnowparkSparkSQLTerraform
Consumer Web • eCommerce • Machine Learning • Software • Sports • Analytics
Lead design and implementation of the PSA Liquidity Platform connecting buyers and sellers. Build buyer tooling, matching/ranking engines, and seller experiences. Architect and operate microservices and Kafka-driven systems on Kubernetes/AWS, instrument observability, apply AI tooling across the SDLC, and drive cross-functional delivery from 0-to-1 while owning end-to-end outcomes.
Top Skills:
AWSDatadogJavaKafkaKubernetesNew RelicOpentelemetryReactSpring BootSvelte
Information Technology • Insurance • Software
Generate and qualify sales pipeline by prospecting insurance agencies, executing lead and opportunity management, collaborating with Marketing and Sales, using CRM tools (Salesforce) and Vertafore methodologies to drive bookings and recurring revenue. Prepare qualified opportunities for sales reps and support campaign execution and reporting.
Top Skills:
CRMSalesforceVertafore
What you need to know about the Colorado Tech Scene
With a business-friendly climate and research universities like CU Boulder and Colorado State, Colorado has made a name for itself as a startup ecosystem. The state boasts a skilled workforce and high quality of life thanks to its affordable housing, vibrant cultural scene and unparalleled opportunities for outdoor recreation. Colorado is also home to the National Renewable Energy Laboratory, helping cement its status as a hub for renewable energy innovation.
Key Facts About Colorado Tech
- Number of Tech Workers: 260,000; 8.5% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Lockheed Martin, Century Link, Comcast, BAE Systems, Level 3
- Key Industries: Software, artificial intelligence, aerospace, e-commerce, fintech, healthtech
- Funding Landscape: $4.9 billion in VC funding in 2024 (Pitchbook)
- Notable Investors: Access Venture Partners, Ridgeline Ventures, Techstars, Blackhorn Ventures
- Research Centers and Universities: Colorado School of Mines, University of Colorado Boulder, University of Denver, Colorado State University, Mesa Laboratory, Space Science Institute, National Center for Atmospheric Research, National Renewable Energy Laboratory, Gottlieb Institute


.png)
