Note: The job is a remote job and is open to candidates in USA. QuantumScape is on a mission to transform energy storage with solid-state lithium-metal battery technology. As a Firmware/ Embedded Engineer, you will implement real-time control loops for power delivery and battery management in an integrated platform for hyperscale AI data centers.
Responsibilities
- Implement digital compensators for voltage and current regulation loops running at 50-200kHz control rates on a power-oriented DSP/MCU (Tl C2000, Microchip dsPIC, or equivalent)
- Design and implement the bidirectional power flow state machine: mains-powered➔ battery-powered➔mains-restored transitions with zero output disturbance and sub-millisecond transfer time
- Integrate battery charge algorithms (CC-CV profiles, temperature-dependent rate limits, float/maintenance charge modes) developed in collaboration with the battery systems engineer
- Implement PMBus command set for host communication, enabling the rack BMC to monitor and control the shelf (voltage/current telemetry, SoC/SoH reporting, enable/disable, fault status)
- Develop Redfish/IPMI telemetry reporting for integration with hyperscaler fleet management systems
- Design fault detection and protection logic: overcurrent, overvoltage, overtemperature, battery undervoltage, and communication loss - with sub-microsecond hardware-assisted trip paths and firmware- managed recovery sequences
- Build power sequencing and hot-swap control logic for safe insertion/extraction under live bus conditions
- Develop diagnostics, event logging, and field debug capabilities (black-box flight recorder for fault events)
- Validate control algorithms using hardware-in-the-loop simulation before committing to prototype hardware
- Support bench bringup and prototype testing alongside the power electronics lead
Skills
- 8+ years writing real-time firmware for power converters (not generic embedded systems you must understand digital control loop theory)
- Proficiency with TI C2000 (strongly preferred), Microchip dsPIC, or equivalent power-oriented DSP/MCU platforms
- Deep understanding of digital compensator design: pole-zero placement, loop bandwidth, phase margin, and their impact on transient response and stability
- Hands-on experience with PWM generation, ADC sampling synchronization, and interrupt-driven control loops
- Experience implementing PMBus or I2C-based power management communication protocols
- Track record with at least one power converter product through prototype bringup and validation
- Fluent in C for bare-metal and RTOS environments; comfortable with fixed-point math for real-time control
- Prior BMS firmware experience (cell balancing, Soc estimation via EKF or coulomb counting, protection state machines)
- Familiarity with OpenBMC integration and Redfish/IPMI protocols
- Experience with functional safety standards (IEC 61508 or ISO 26262 from automotive)
- Proficiency with hardware-in-the-loop tools (PLECS RT Box, Typhoon HIL, dSPACE)
- Experience with CAN bus, SPI, or UART-based multi-board communication in power systems
- Exposure to OCP power shelf communication and management standards
Benefits
- Annual bonus
- Generous RSU/Equity package as part of its compensation plan
- Employee paid health care
- Employee Stock Purchase Plan (ESPP)
- Other benefits
Company Overview
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