<div class="content-intro"><p data-renderer-start-pos="41">K2 is building the largest and highest-power satellites ever flown, unlocking performance levels previously out of reach across every orbit. Backed by over $1 billion in total funding from leading investors including Altimeter Capital, ICONIQ, Kleiner Perkins, Lightspeed Venture Partners, Redpoint Ventures, and T. Rowe Price — and with over $1 billion in signed contracts across commercial and US government customers, we're mass-producing the highest-power satellite platforms ever built for missions from LEO to deep space.</p> <p data-renderer-start-pos="570">The rise of heavy-lift launch vehicles is shifting the industry from an era of mass constraint to one of mass abundance, and we believe this new era demands a fundamentally different class of spacecraft. Engineered to survive the harshest radiation environments and to fully capitalize on today's and tomorrow's massive rockets, K2 satellites deliver unmatched capability at constellation scale and across multiple orbits.</p> <p data-renderer-start-pos="994">With multiple launches in 2027 and plans to scale to 100 satellites a year, we're Building Bigger — helping develop the solar system and build toward a Kardashev Type II (K2) civilization. If you are a motivated individual who thrives in a fast-paced environment and you're excited about contributing to the success of a high-growth Series D-funded company, we'd love for you to apply.</p></div><p><strong><span data-contrast="auto">About the Role</span></strong> <br><span data-contrast="auto">We are looking for a hands-on Senior RF/mmWave Post-Silicon Validation Engineer to bring up and characterize highly integrated RF and mmWave SoCs from first silicon through product integration.</span></p> <p><span data-contrast="auto">You will work closely with RFIC designers, systems/DSP, mixed-signal, firmware, hardware, and validation teams to characterize RF performance, validate calibration algorithms, debug complex silicon issues, and build our RF test and validation capability from the ground up.</span></p> <p><strong><span data-contrast="auto">Responsibilities</span></strong><span data-ccp-props="{}"> </span></p> <ul> <li><span data-contrast="auto">Bring up and characterize RF/mmWave silicon, including TX/RX signal chains, LNAs, PAs, mixers, LO generation, PLLs, and RF front ends.</span><span data-ccp-props="{"335559739":0}"> </span></li> <li><span data-contrast="auto">Develop and execute RF characterization plans across frequency, power, voltage, temperature, process, and operating modes.</span><span data-ccp-props="{"335559739":0}"> </span></li> <li><span data-contrast="auto">Measure key RF performance including gain, noise figure, output power, compression, linearity, EVM, ACLR, phase noise, spurious performance, harmonics, sensitivity, and dynamic range.</span><span data-ccp-props="{"335559739":0}"> </span></li> <li><span data-contrast="auto">Develop automated RF/mmWave test setups for characterization, regression, data collection, analysis, and reporting.</span><span data-ccp-props="{"335559739":0}"> </span></li> <li><span data-contrast="auto">Work closely with RFIC designers to correlate silicon measurements with simulations and identify performance gaps and root causes.</span><span data-ccp-props="{"335559739":0}"> </span></li> <li><span data-contrast="auto">Partner with systems/DSP teams to validate RF calibration and signal-processing algorithms on silicon and correlate performance with system models.</span><span data-ccp-props="{"335559739":0}"> </span></li> <li><span data-contrast="auto">Debug complex issues spanning silicon, package, PCB, firmware, calibration, test setup, and system behavior.</span><span data-ccp-props="{"335559739":0}"> </span></li> <li><span data-contrast="auto">Support the transition from chip-level RF characterization to product integration and system-level validation.</span><span data-ccp-props="{"335559739":0}"> </span></li> <li><span data-contrast="auto">Contribute to building the RF/mmWave validation lab, measurement infrastructure, test methodology, and automation from the ground up.</span><span data-ccp-props="{"335559739":0}"> </span></li> <li><span data-contrast="auto">Document characterization results, silicon limitations, workarounds, and lessons learned for future silicon generations.</span><span data-ccp-props="{"335559739":0}"> </span></li> </ul> <p><strong><span data-contrast="auto">Qualifications</span></strong><span data-ccp-props="{}"> </span></p> <ul> <li><span data-contrast="auto">BS/MS in Electrical Engineering or related field.</span><span data-ccp-props="{"335559739":0}"> </span></li> <li><span data-contrast="auto">5+ years of RF/mmWave silicon validation, characterization, RFIC test, or related experience.</span><span data-ccp-props="{"335559739":0}"> </span></li> <li><span data-contrast="auto">Strong understanding of RF transceiver architectures and RF/mmWave circuits, including LNAs, PAs, mixers, PLLs, and frequency-generation systems.</span><span data-ccp-props="{"335559739":0}"> </span></li> <li><span data-contrast="auto">Deep hands-on ex