Principal RF Payload Engineer

About Capella Space

Capella Space is a pioneer in Synthetic Aperture Radar (SAR) satellite technology and space-based signal intelligence. We empower government commercial and research organizations around the world with high-resolution timely Earth insights that drive better decisions - across defense and intelligence disaster response infrastructure monitoring environmental protection energy and more.

As a U.S.-based company Capella designs builds and operates an advanced constellation of commercial SAR satellites in orbit today. Our satellites are backed by a fully automated tasking collection and delivery platform delivering fast reliable insights when and where our customers need them most. As a subsidiary of IonQ a global leader in quantum computing Capella is charting the future of Earth observation. Together were on a mission to bring quantum computing to space - unlocking ultra-secure encrypted uplink and downlink capabilities reducing latency and enabling powerful on-orbit analytics. This visionary integration of advanced remote sensing and quantum technology will support customers with the highest level of data fidelity security and speed.

Capella was named one ofFast Companys 10 Most Innovative Companies in Space in 2023and is a trusted partner of the U.S. Space Force U.S. Air Force U.S. Navy NASA the National Reconnaissance Office and allied government agencies worldwide. Built In recognized IonQ on three of its 2025 Best Places to Worklists.

What Makes Capella Unique

At Capella we dont just imagine whats possible - we build it. Were a mission-driven team fueled by curiosity grit and a shared commitment to redefining the limits of space innovation. Our environment is fast paced rooted in humble collaboration. Every team member plays a critical role in shaping the future of our technology and our industry. If youre ready to roll up your sleeves and help solve problems that others call impossiblewere the place for you. We believe great ideas can come from anywhere and we thrive on diverse perspectives that help us move faster think deeper and push the boundaries of innovation. Whether youre new to the space industry or a seasoned expert youll find a team that values creativity integrity and bold thinking. Join us as we build the future of SARand take quantum to space.

About the Role

We are seeking a highly experienced PrincipleRFPayload Engineer to join ourRFSystems this role you willbe responsible forthe technical direction of satelliteRFsystem architectures and subsystem design. As an integral part of our growing engineering team you will be collaborating cross-functionally with electrical software thermal mechanical and spacecraft operations teams.

Responsibilities:

• Lead detailedRFsystem modeling &EMsimulation efforts
• Develop system level budgets maintaining technical oversight of system performance throughout product lifecycle
• DirectRFsystem architecture trade studies
• High-level direction of design validation & qualification campaigns
• Act as subject matter expert in new program proposal development
• Manage the development of outsourced components and interface with external vendors
• Provide guidance and mentorship for junior engineers

Requirements:

• BSEE/Physics 13 years related experience or MSEE/Physics 11 years related experience
• Experience developingRFsystem/payload budgets to assess margin to performance requirements
• Expert knowledge ofEMsimulation tools for waveguide antenna and/or planar component design (MWO ADS HFSS)
• Expert knowledge in at least two of the following areas:
• Space-based antenna systems (single- and multi-aperture passive and active)
• Space-based high-powerPAdesign
• Satellite communications transponder system design
• Software defined radios and digital signal processing
• Ultra-stable oscillator / frequency synthesizer design
• Expert knowledge ofRFtest & measurement methods
• Deep hands-on experience working with and troubleshootingRFcircuits and/or systems
• Familiarity with spacecraft architectures and cross-functional engineering stakeholders
• Experience leading teams and mentoring junior engineers
• Exceptional communication and presentation skills
• To conform to U.S. Government space technology export regulations including the International Traffic in Arms Regulations (ITAR) Capella Employees must be a U.S. citizen lawful U.S. permanent resident (i.e. current Green Card holder) or lawfully admitted into the U.S. as a refugee or granted asylum or be eligible to obtain the required authorizations from the U.S. Department of State and/or the U.S. Department of Commerce as applicable. Learn more about ITARhere.

Preferred Qualifications:

• Proficiency withRF/communication system design tools (VSS SystemVue MATLAB)
• Familiarity with microwave component assembly and packaging techniques
• Knowledge of wireless communications standards protocols and link analysis
• Past experience with multilayer mixed signalPCBdesign (Altium preferred)
• Proficiencyin data analysis and signal processing tools (e.g. Python MATLAB)
• 3D CAD modeling experience
• Security clearance or eligibility to obtain clearance preferred

Compensation

The annual salary range for this role as it is posted is $203506 - $254383. The final job level and annual salary will be determined based on the education qualification knowledge skills ability and experience of the final candidate(s) specific office location and calibrated against relevant market data and internal team equity. Benefits listed in this posting may vary depending on the nature of your employment with Capella Space.

Benefits/Perks

In addition to an opportunity to take part in an innovative collaborative and fast-growing business with a highly motivated and skilled team we also take pride in taking care of our employees. Here are just a few ways that we show our appreciation:

• We provide extensive medical coverage including strong vision and dental plans flexible spending accounts and additional supplemental health options.
• Paid Flexible Time Off Policy
• 401K Plan to invest in your long-term retirement goals
• Parental Leave program
• Lifestyle Spending Account
• Commuter & Parking Benefits
• Mental Health Resources
• Monthly Phone Stipend
• Furry friends Weve got you covered with dog-friendly work environment & them with pet insurance options

Equal Opportunity Statement

Capella Space is an equal opportunity employer committed to creating a diverse and inclusive workplace and upholding equitable hiring practices.

All qualified applicants will receive consideration for employment without regard to race color religion sex sexual orientation gender identity national origin disability protected veteran status or any other characteristic under federal state or local law including those with a criminal history in a manner consistent with the requirements of applicable state and local laws including the CA Fair Chance Initiative for Hiring Ordinance. We actively encourage members of recognized minorities women Veterans and those with disabilities to apply and we work to create a welcoming and supportive environment for all applicants throughout the interview process. If you need assistance or require an accommodation during the job application process please notify

To learn more about us explore our site: and follow us on X and LinkedIn to see our SAR imagery!