Senior Power Electronics Engineer

Location: Hangzhou, China

Company

hirify.global develops integrated power semiconductors and power delivery systems for applications including telecom, AI, automated test equipment, and satellite systems.

What you will do

• Architect, design, and develop isolated DC-DC converters and power systems operating at 200 V–10 kV and 100 W–10 kW.
• Design custom high-frequency transformers and inductors using galvanic and capacitive isolation techniques.
• Integrate and program microprocessors and system managers for power control, monitoring, fault logging, and PMBus/I2C communication.
• Develop EMC and EMI mitigation strategies and implement current sharing for multiphase and parallel power modules.
• Lead schematic capture, PCB layout supervision, prototyping, validation testing, assembly, rework, and debugging.
• Perform failure analysis and collaborate with mechanical engineering, firmware, manufacturing, and business teams through product launch.

Requirements

• Bachelor’s degree in Electrical Engineering or a related field; a master’s degree is preferred.
• 7+ years of direct experience designing and developing isolated switch-mode power supplies.
• Expertise in transformer design, isolation barriers, DC/DC topologies, current sharing, and N+1 redundant power architectures.
• Strong microcontroller integration, programming, and debugging skills using C/C++ or similar languages.
• Experience designing for international safety and EMC standards, including UL/IEC/EN 60950-1, IEC/EN 62368-1, CISPR, and FCC Class A/B.
• Proficiency with schematic and PCB layout tools such as Altium Designer or Cadence, plus simulation tools such as PSIM or Simplis.

Nice to have

• Experience with wide-bandgap semiconductors such as GaN and SiC.
• Knowledge of thermal management and mechanical packaging for high-density power supplies.
• Experience with high-voltage designs above 1 kV.
• Familiarity with reliability prediction models such as MIL-HDBK-217 and Telcordia.

Culture & Benefits

• Work in a semiconductor product company focused on creativity, sustainability, and leading-edge innovation.
• Contribute to products used in telecom, AI, automated test equipment, and satellite applications.
• Collaborate across engineering, firmware, manufacturing, and business functions.
• Equal opportunity employment and a commitment to diversity.