Principal RF Engineer I

CesiumAstro; Denver (CO); On-site; USD 142,000 - 189,500; Full time

Benefits offered by this job

Full-time employment offers with stock options

Generous benefits package including health and retirement plans

Job summary

A leading aerospace technology firm located in Denver is looking for a Principal RF Engineer I to join its team. The ideal candidate will have extensive experience in RF electronics design and must demonstrate strong communication skills. This role involves developing RF systems for innovative aerospace applications. A bachelor's degree in Electrical Engineering is required, along with a minimum of nine years of industry experience. The position offers a competitive salary and a comprehensive benefits package.

Qualifications

• Minimum of 9 years of industry experience in RF electronics design.
• Expert-level proficiency in simulation and EDA tools.
• Extensive hands-on experience with lab instruments.

Responsibilities

• Responsible for RF circuits, modules, and systems development.
• Work on phased array communication systems.
• Lead design, analysis, and manufacturing processes.

Skills

RF electronics design

Communication skills

Simulation tools (CST, ADS)

Lab instruments usage

Education

Bachelor of Science degree in Electrical Engineering

Master of Science degree preferred

Tools

Vector network analyzers

Spectrum analyzers

Altium

Job description

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 actively seeking passionate, collaborative, energetic, and forward‑thinking individual to join our team as a Principal RF Engineer I. The ideal candidate has extensive experience in board‑level and system‑level RF electronics design.

If you enjoy working in a startup environment and are passionate about developing leading‑edge phased arrays for satellites, spacecraft, and aerospace systems, we would like to hear from you.

In this position, you will be responsible for RF circuits, modules, and systems through all phases of the development process.

The work will include many aspects of phased array communication systems, including RF front ends, frequency converters and synthesizers, filters, beamformers, power dividers, and phased array antennas.

As a principal hardware team member, you will be responsible for RF system and hardware designs from initial concept through requirements definition, architecture definition, part selection, detailed design, analysis, manufacturing, testing, qualification, and in‑orbit support of Cesium's products. Hardware design tasks will include block diagrams, detailed schematics, PCB layout and routing, simulations, and test design. Principal Engineers also serve as technical and professional mentors in their field and may be given the opportunity to lead company programs.

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.

Successful Candidates Will Require

• Bachelor of Science (BS)) degree in Electrical Engineering (EE) from an accredited university or institution. Master of Science (MS) desired.
• Minimum of 9 years of industry experience in design and analysis of RF electronics and systems.
• Expert‑level proficiency in professional simulation tools such as CST and ADS, as well as EDA tools such Altium.
• Extensive 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 Includes

• Python or other programming languages.
• Aerospace electronics design, development, and qualification.
• Worst‑case circuit analysis, failure method and criticality analyses, and reliability analysis.
• Antenna design.
• EMI/EMC design and mitigation techniques.

$142,000 - $189,500 a year

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.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.