Embedded Firmware Engineer (Robotics)

Location: San Carlos, California, United States; on-site

Salary: $200,000–$280,000 per year plus equity

Company

hirify.global builds humanoid robots designed to move, learn, and operate safely in homes and other real-world environments.

What you will do

• Develop and maintain charger firmware for AC-DC power conversion, power factor correction, and isolated DC-DC conversion.
• Implement lithium-ion battery charge profiles, including constant-current, constant-voltage, and taper phases.
• Design charger-to-BMS communication over CAN and coordinate charge requests, feedback, temperature limits, and fault signaling.
• Implement voltage and current regulation, soft-start sequencing, and protection logic for power converters.
• Develop fault detection and safe-state transitions for overvoltage, undervoltage, overcurrent, overtemperature, ground faults, and BMS communication loss.
• Test, validate, and verify firmware releases across prototype and production robot platforms.

Requirements

• 5+ years of embedded firmware development in C/C++ on real hardware; 7+ years for senior or staff-level positions.
• Experience with interrupts, DMA, timing-critical execution, and embedded communication protocols.
• Working knowledge of switched-mode power supplies, AC-DC topologies, power factor correction, transformer isolation, and converter control.
• Knowledge of lithium-ion charging protocols, including CC-CV and multi-stage charging.
• Hands-on CAN experience plus SPI, I²C, and UART interfaces.
• Experience debugging firmware and hardware with oscilloscopes, current probes, and power analyzers.

Nice to have

• Experience with safety-critical or fault-tolerant embedded systems and standards such as IEC 61508 or ISO 26262.
• Familiarity with FreeRTOS, SafeRTOS, or similar real-time operating systems.
• Background in robotics, autonomous systems, or complex electromechanical products.
• Experience with distributed real-time communication, motor drive and actuator control, or battery charge management.

Culture & Benefits

• Medical, dental, and vision coverage.
• Paid time off, company holidays, and parental leave.
• 401(k) plan with company match.
• FSA and HSA options, commuter benefits, disability coverage, life insurance, and an Employee Assistance Program.
• On-site snacks and catered lunches.