Work as a satellite systems engineer across satellite design, development, testing, and operations, helping build communications infrastructure and direct-to-device connectivity.
About this role
This role designs and develops the power circuits and battery systems installed in the ZERO small rocket’s avionics system. The avionics system consists of electronic equipment that controls the rocket. The work focuses on reliable power delivery to sensors and CPUs and efficient, safe power control for driving systems throughout the vehicle.
Responsibilities include designing battery systems and power circuits, and designing and evaluating battery management systems and DC-DC converters in the tens-of-watts range. The role defines requirements for high-voltage, high-current distribution systems and performs safety design and evaluation of protection circuits.
The engineer selects power devices such as MOSFETs, verifies design margins and derating based on the safe operating area, and conducts thermal assessments. Other work includes high-density, high-reliability circuit-board design and analysis, EMI/EMC countermeasures, high-current design reviews, and IR-drop analysis.
The position directs and reviews circuit-board design conducted with external partners. It also covers reliability assurance and environmental testing, including design verification based on FMEA and worst-case analysis. The engineer plans temperature, vacuum, EMC, and vibration tests and accompanies evaluations using actual hardware.
The role belongs to the avionics group, which is responsible for developing the rocket’s electronic control system. The group works with related teams on subsystem integration tests, engine firing tests, and stage firing tests, and operates the system during launches. The work therefore spans the rocket development process from early development through launch operations.
The stated work location is the company’s Tokyo branch in Koto-ku, Tokyo.
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