RF/MMIC Design Engineer

We are seeking an experienced RF/MMIC Design Engineer supporting the development of advanced microwave and superconducting computing technologies.

The ideal candidate will have extensive hands-on experience designing RF Monolithic Microwave Integrated Circuits (MMICs) , with particular emphasis on large-scale resonator circuits operating around 30 GHz .

This engineer will be responsible for RF circuit design, electromagnetic simulation, optimization, and layout support for complex microwave resonator networks. The role requires a strong understanding of high-frequency circuit behavior, resonant structures, coupling mechanisms, and parasitic effects.

Key Responsibilities

• Design, simulate, and optimize RF/MMIC circuits operating at approximately 30 GHz.
• Develop complex, large-scale microwave resonator circuits and coupled resonator networks.
• Perform RF circuit design and electromagnetic modeling using industry-standard EDA tools.
• Analyze resonator characteristics, including resonant frequency, quality factor (Q), coupling coefficients, bandwidth, insertion loss, and impedance matching.
• Design and optimize distributed microwave structures, transmission lines, resonators, filters, and passive RF networks.
• Perform full-wave electromagnetic simulations to evaluate parasitic coupling, electromagnetic interactions, and signal integrity.
• Support RF IC layout, parasitic extraction, design verification, and tapeout preparation.
• Collaborate with device physicists, IC designers, layout engineers, and test teams to optimize circuit performance.
• Analyze simulation and measurement results, troubleshoot performance discrepancies, and recommend design improvements.
• Support RF circuit integration into larger semiconductor or superconducting computing architectures.

Required Qualifications

• 7+ years of hands-on RF, microwave, or MMIC design experience preferred.
• Strong experience designing MMICs or integrated microwave circuits at 30 GHz or higher.
• Direct experience designing resonator circuits, coupled resonator structures, or large-scale microwave resonator networks.
• Strong knowledge of microwave circuit theory, transmission lines, impedance matching, S-parameters, and electromagnetic coupling.
• Hands-on experience with RF/microwave design and simulation tools such as:
• Keysight ADS
• Ansys HFSS
• Cadence AWR Microwave Office
• CST Microwave Studio
• Cadence Virtuoso / Spectre RF
• Experience with EM/circuit co-simulation and layout-dependent RF parasitic effects.
• Experience taking RF/MMIC designs through simulation, physical implementation, and hardware validation.
• Ability to work independently on complex RF design challenges.

Preferred Qualifications

• Experience with superconducting microwave circuits or cryogenic RF systems.
• Experience with high-Q resonators, resonator arrays, and strongly coupled microwave structures.
• Knowledge of Josephson junction-based circuits or superconducting electronics.
• Experience with RF circuit design for cryogenic temperatures near 4 Kelvin.
• Experience with advanced semiconductor fabrication processes and RF IC tapeouts.
• Familiarity with Python or MATLAB for RF modeling, analysis, and automation.
• Experience characterizing microwave circuits using vector network analyzers (VNAs) and other RF test equipment.