Antenna Engineer

Principal Phased Array Antenna Engineer - Radar Payloads

Location: Seattle, WA

Salary: up to $275,000 Gross Per Annum + Stocks/Shares + Brilliant benefits package

You'll join a venture-backed space technology company building the flight-ready electronically scanned antenna arrays at the heart of next-generation spaceborne radar missions.

Our state-of-art antennas need to deliver the gain, efficiency, bandwidth, scan performance, sidelobe control, polarization purity, and calibration accuracy that advanced SAR and target-tracking payloads demand and we're looking for the engineer who can own that problem end to end.

As Principal Antenna Engineer, you'll have ownership of the antenna end to end: requirements and architecture (including interfaces to adjacent systems), EM design, prototype build, measurement, calibration, and qualification.

You'll be the technical owner translating radar performance needs into flight-ready hardware, with a direct line to payload integration and launch.

Day to day, you'll:

• Own phased-array antenna design and EM modeling, from requirements through architecture and trade studies
• Build and measure prototypes, correlating EM models to test data
• Optimize and calibrate array performance across frequency and scan angle
• Develop beam-steering and alignment methods, working closely with RF, FPGA/DSP, and software teams
• Support spacecraft integration and environmental qualification
• Mature antenna hardware from prototype to a flight-ready, repeatable product

You'll bring:

• Expert-level design experience with phased-array / electronically scanned antennas — array theory, impedance and mutual coupling, scan behavior, and polarization
• Hands-on experience with beamforming and array calibration
• High-frequency PCB, feed, and passive RF component design
• Proficiency with EM simulation tools such as HFSS, CST, or FEKO
• Programming/scripting skill in Python or MATLAB for modeling and data analysis
• Experience with VNA and near-/far-field antenna measurement
• Experience carrying RF hardware through space qualification

You'll also need to be hands-on, rigorous, self-driven, and take full ownership of outcomes, with strong first-principles EM judgment, discipline about correlating models to test data, and comfort operating with ambiguity and evolving requirements; while collaborating closely across RF, digital, mechanical, thermal, and software disciplines.

This role may require access to U.S. export-controlled information and may require the ability to obtain a U.S. government security clearance. Candidates must be a U.S. citizen to be eligible.