Senior Firmware Engineer
$162,000–$252,000 year
On-site · San Francisco, California, United States
Job Summary
Senior Firmware Engineer responsible for designing and developing firmware for ARM-based MCUs in low-power embedded systems. Design and develop firmware and embedded system architecture for prototypes and products; collaborate with EE, RF, Security, Cloud Services, and AI teams; bring up and debug hardware in the lab and at remote production sites; manage performance metrics including code size, model performance, memory footprint, power consumption, and latency; emphasize security, privacy, and scalable software practices.
Required Qualifications
- 8+ years experience developing firmware for embedded microcontrollers
- Deep experience in embedded firmware with demonstrable knowledge in radio stacks (BT, BLE, Wi-Fi)
- Passionate about low-power (<1mW sleep) systems, audio subsystem integration, and cloud-connected embedded devices
- Proficient in FreeRTOS or Zephyr, Embedded C, C++, protocols, and unit test frameworks
- Comfortable working in large multi-developer codebases
- Ability to collaborate in a psychologically safe and healthy team environment
- Experience developing and debugging Qualcomm, STM32, Cypress/Infineon PSoC, or Nordic
- Experience shipping high-reliability production code
Desired Qualifications
- Experience developing and debugging Qualcomm, STM32, Cypress/Infineon PSoC, or Nordic
- Experience shipping high-reliability production code
- Experience with ARM MCU architecture
- Proficiency in FreeRTOS or Zephyr
- Embedded C and C++
- Protocols and unit test frameworks
- Ability to collaborate in large multi-developer codebases
- Comfortable with low-level hardware debugging tools and techniques
- Strong focus on low-power (<1mW sleep) systems
- Experience with radio stacks (BT, BLE, Wi-Fi) and sensor/audio pipelines
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