RF/Microwave Design Engineer

About QTREX QTREX Quantum Ltd. (Nasdaq: QTEX) is a growing deep-tech company developing advanced connectivity and electronics manufacturing solutions for next-generation hardware markets. Building on our proprietary Additively Manufactured Electronics (AME) technology, we develop materials, manufacturing processes, and production platforms for high-performance interconnects, electronic substrates, and densely packed three-dimensional structures. This enables highly integrated solutions for demanding applications. We deliver high-density, thermally optimized RF connectivity and high-speed electronics for quantum computing infrastructure, dilution cryostats, and other cryogenic systems. We also advance AME applications for defense, aerospace, missiles, space, and other mission-critical programs worldwide.  Position Overview  QTREX Quantum is looking for a talented RF / Microwave Engineer to shape the future of our quantum signal processing infrastructure. You will be responsible for designing and simulating high-frequency components, developing cryogenic RF signal chains, and correlating electromagnetic models with physical measurements in dilution refrigerators. Working closely with a multidisciplinary team, you will bridge the gap between theoretical microwave design and hands-on system characterization in quantum environments. Responsibilities •  Design and simulate RF/microwave components and subsystems across the qubit control and readout signal chain, from concept through validation • Develop and validate cryogenic RF signal chains, including attenuation and filtering budgets, thermal anchoring, and noise management from 300 K to the mixing chamber. • Design controlled-impedance RF PCBs, interconnect transitions, and shielding/grounding solutions • Perform microwave measurements (VNA S-parameters, calibration, de-embedding) and correlate results against EM simulation • Build automation and data-analysis tooling for simulation sweeps and measurement workflows • Support system bring-up, debug, and characterization in dilution refrigerators • Collaborate with multi-disciplinary team members to define and flow down requirements

Requirements: • BSc in Electrical Engineering, Applied Physics, or a related field with 5+ years of industry experience in RF/microwave design. or an MSc/PhD in a related field (fresh graduates without industry experience are welcome). • Experience with 3D EM simulation tools (HFSS, CST, or COMSOL) • Experience with microwave measurements using a VNA (S-parameter characterization, calibration, de-embedding) • Experience in RF PCB design and/or shielding and grounding techniques Preferred • Cryogenic measurement experience (dilution refrigerator wiring, thermal anchoring, attenuation/filtering budgets) • Design experience with passive and/or active microwave devices: filters, couplers, hybrids, matching networks, and amplifiers • Background in superconductivity or superconducting devices • Familiarity with microwave components in the qubit signal chain • Scripting for automation and data analysis (Python, MATLAB) • Experience or knowledge of 3D printing technologies for RF/microwave hardware