Senior MMIC Design Engineer

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.

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.

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.

We are looking for a Senior MMIC Design Engineer to develop high-performance RF and millimeter-wave integrated circuits for next-generation satellite communication systems. You will own MMIC designs from architecture and technology selection through tapeout, characterization, and product integration.

• Design and develop power amplifiers (PAs), low-noise amplifiers (LNAs), and RF switches in GaAs andGaNtechnologies.
• Own designs from architecture and topologyselectionthrough schematic design, layout, EM simulation,tapeout, and silicon/MMIC characterization.
• Optimizecircuits for output power, efficiency, linearity, noise figure, bandwidth, gain, and robustness.
• Perform RF and electromagnetic simulations, including passive structures, matching networks, interconnects, and package/interface effects.
• Develop test plans and characterize MMICs using RF and millimeter-wave laboratory equipment.
• Correlate measured performance with simulation and drive design improvements.
• Work closely with RF systems, antenna, packaging, and transceiver IC teams to define interfaces and enable system-level integration.
• Contribute to technology evaluation, architecture trades, design methodology, and development of MMIC capabilities from the ground up.

• MS, or PhD in Electrical Engineering or a related field.
• 5+ years ofexperienceindesigning RF/millimeter-wave MMICs in GaAs and/orGaNtechnologies.
• Demonstrated design experience with PAs, LNAs, and/or RF switches, with deepexpertisein at least one of these areas.
• Strong understanding of RF fundamentals including impedance matching, stability, noise, linearity, power handling, and nonlinear behavior.
• Experience with Cadence, Keysight ADS, EM simulation tools, or equivalent RF/MMIC design environments.
• Hands-on experience with RF/mm Wavecharacterization and equipment such as VNAs, spectrum analyzers, signal generators, power meters, and load-pull systems.
• Experience taking designs throughtapeoutand measured hardware validation.

• Experience with wideband RF/mm Wavecircuit design techniques.
• PA experience spanning high efficiency, high linearity, and broadband operation.
• Experience designing circuits into the Ka-band and higher millimeter-wave frequency ranges.
• Familiarity with MMIC packaging, RF module integration, thermal considerations, and antenna/array interfaces.
• Experience developing MMICs for phased…