Senior RF Systems Engineer
hermeus
Los Angeles, CA
Posted Jan 22, 2026
- Full-time
- Engineering
Job description
Hermeus is a venture-backed defense aviation company reclaiming the lost art of rapid iterative prototyping to build the fastest aircraft in the world today. By prioritizing relentless hardware iteration, we deliver high-speed systems at the pace of the modern battlefield. We work with the Department of War to provide the high-speed capabilities our nation and its allies need to maintain a durable, asymmetric advantage. ### About The Role: As an RF systems engineer you will be responsible for identifying RF hardware requirements, creating system architectures, and building/testing/integrating the RF solutions – both on the aircraft and ground station. This position will require strong fundamentals, wide-breadth design experience, and efficient troubleshooting skills. You’ll be responsible for high-ownership technical delivery while working with a multi-disciplinary team of engineering, manufacturing, and quality professionals. ### Responsibilities - Simulate/model RF hardware for communication systems and sensors/instruments. - Develop test concepts and test procedures for RF and Environmental testing, including far field and near field measurements (plus vibration, shock, thermal and thermal vacuum). - Define hardware architecture and specifications for the RF system blocks, interfaces, and housing. Design, build and test microwave circuits and assemblies. - End-to-end design validation and testing of RF product performance. Lead and conduct troubleshooting or root cause hardware performance challenges. - Work with manufacturing and production teams on procuring and integrating quality RF module and antenna subsystems into our aircraft. - Perform data analysis of RF systems, generate documentation/slides and present results to team. ### Requirements - Bachelor's degree in electrical engineering or related discipline. - 4+ years of professional experience designing and testing electrical, antenna and/or RF hardware and systems. - Experience with RF/Antenna Systems in L/S/C/Ku and Ka-Band frequencies. ### Preferred Skills and Experience - Demonstrated experience working collaboratively in cross-functional teams. - Strong troubleshooting and problem diagnostic skills - Understanding of electromagnetic propagation, impedance matching, Smith Chart, VSWR, P1dB, IIP3, NF, and etc. - Understanding of digital modulation such as QAM, BPSK, QPSK, and SOQPSK or similar. - Experience working with VNA, spectrum analyzers, RF power meters, and other relevant RF test equipment. - Experience with test equipment automation and scripting - Strong hands-on skills including prototyping/soldering and the use of a full range of instrumentation including multimeters, oscilloscopes, current meters, etc - Support ongoing regulatory filling including FCC, FAA, and AFTRCC. - Previous Experience on Integration and Test of an RF Systems (of any kind) with Radio as an integral part of RF Systems. - Master's degree with emphasis in Antenna, Electromagnetic theory and/or microwave circuits. - Experience using in HFSS (or similar antenna simulation tools). - Familiarity with Antenna design, including types and tradeoffs. - EMI/EMC testing per MIL-STD-461. - Prior experience working on an airborne vehicle. - Experience in a startup or agile development environment. - Experience with Python or other scripting languages to aid automation, data analysis, etc - Ability to travel on short notice to support test campaigns