Staff Embedded Firmware Engineer Charger
1X is a Palo Alto-based AI and robotics company developing general-purpose humanoid robots, led by its NEO home robot.
Maintainer signals as of 9/25/2026
Palo Alto, United States
About 1X
1X develops humanoid robots that live and learn alongside people. Its flagship product, NEO, is a home robot designed to autonomously help with household tasks, supported by the company’s embodied-AI systems.
Skills
Candidate Availability
Required and preferred rules are kept separate and reflect the wording in the original posting.
About the Role
You will develop and maintain charger firmware for AC-DC conversion and lithium-ion battery charging. You will implement power-converter control loops, charge-profile management, CAN communication with the BMS, fault protection, and firmware validation using hardware debugging tools.
Requirements
- 7+ years of embedded firmware development in C/C++ for senior or staff-level positions
- Experience managing interrupts, DMA, and timing-critical execution on hardware
- Knowledge of switched-mode power supplies, AC-DC topologies, power factor correction, and transformer isolation
- Knowledge of lithium-ion charge protocols and charge termination criteria
- Hands-on CAN implementation and familiarity with SPI, I2C, and UART
- Experience using oscilloscopes, current probes, and power analyzers for firmware-hardware debugging
Responsibilities
- Develop and maintain charger firmware for AC-DC power conversion
- Implement lithium-ion battery charge profile management
- Architect charger-to-BMS communication over CAN or similar embedded bus
- Test, validate, and verify firmware releases
- Implement voltage regulation, current regulation, and soft-start control loops
- Develop fault detection, protection logic, and safe-state transitions
Benefits
- Medical, dental, and vision coverage
- Paid time off, company holidays, and parental leave
- 401(k) plan with company match
- Flexible Spending Account and Health Savings Account options
- Commuter benefits
- Short-term and long-term disability insurance
- Life insurance
- Employee Assistance Program
- Onsite snacks and catered lunches