Antenna Engineer

Principal Phased Array Antenna Engineer - Radar Payloads

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Location: Seattle, WA

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

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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.

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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.

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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.

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

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Day to day, you'll:

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

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

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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.