Stellios Technologies is building advanced high power microwave and energy systems for defense, aerospace, and energy.
We are hiring an exceptional HPM Engineer to design, build, test, and scale high power microwave sources, with an initial focus on klystrons and gyrotrons.
This is not a purely theoretical or simulation role. You will work directly with hardware and own major parts of the path from first principles design through fabrication, integration, power testing, failure analysis, and design iteration.
What You Will Own And/Or Support
- RF and beam wave interaction design for klystrons, gyrotrons, and related vacuum electronic devices
- Resonant cavities, interaction structures, mode selection, output structures, waveguide components, RF windows, and related microwave hardware
- Electron beam transport and electron optics in coordination with electron gun and magnet engineering
- Electromagnetic, particle, and multiphysics simulation used to predict device performance before hardware is built
- High voltage, high vacuum, and high power RF testing, diagnostics, commissioning, and troubleshooting
- Root cause analysis when measured performance does not match simulation or design targets
- Mechanical tolerances, materials, thermal constraints, brazing and joining considerations, vacuum compatibility, and design for manufacturability
- Technical reviews with internal engineers, external experts, machine shops, vacuum tube manufacturers, and critical component suppliers
- Transition of successful prototypes into repeatable production hardware
Who We Are Looking For
You must have one of the following:
- A PhD in electrical engineering, physics, applied physics, accelerator science, plasma physics, or a directly relevant field, or
- A BS or MS in a relevant technical field plus at least 5 years of directly relevant professional experience
Direct klystron or gyrotron experience is strongly preferred, but it is not mandatory. We will consider exceptional engineers who have built adjacent high power, high voltage microwave systems or components, including traveling wave tubes, magnetrons, electron beam systems, accelerators, pulsed RF systems, high power RF sources, or closely related hardware.
You need strong fundamentals in electromagnetics and high power microwave engineering, plus real hardware judgment. We care more about what you have personally designed, built, tested, debugged, and made work than about credentials alone.
You should be comfortable working around high voltage, vacuum systems, RF diagnostics, precision microwave hardware, and multidisciplinary engineering teams.
This role requires access to U.S. export controlled information. Candidates must qualify as a U.S. person under applicable export control laws, including U.S. citizens, U.S. nationals, lawful permanent residents, refugees, and asylees.
You must be willing to work on site in Southern California or Austin.
Competitive compensation and meaningful equity.