Staff or Senior Firmware Engineer

Overview

Senior-level firmware engineer role building embedded software for Samsara's cloud-connected sensor platform, which runs on millions of devices deployed by industrial and enterprise customers.

What you'll do

• Evaluate and select hardware components, including SoC, flash/RAM and sensor combinations, and prove out choices on prototypes.
• Bring up new hardware platforms and prototypes from virgin silicon, configuring I/O and getting SPI, I2C, UART and BLE working.
• Own peripheral drivers, secure bootloaders, device firmware updates, and core power and connectivity management layers.
• Design protocols and hardware management for battery-powered sensors and gateways to maximize device life.
• Partner with product, full-stack, mobile and quality engineers so firmware data arrives intact and useful to end users.
• Lead by example as a force multiplier: deliver thoughtful designs, rigorous reviews, and hands-on mentorship to other engineers.
• Lead firmware development for new products end to end, from concept through architecture, implementation, validation and launch.

What you'll need

• 8+ years building firmware for resource-constrained systems.
• Experience leading firmware development for several new products end to end.
• Substantial bare-metal and RTOS experience, such as Zephyr, FreeRTOS, or equivalent.
• Experience bringing up new boards.
• Fluency in low-level interfaces: SPI, I2C, UART, CAN, ADC.
• Bench experience with oscilloscope, network analyzer, or RF spectrum analyzer.
• Senior-level scope spanning hardware, firmware, cloud and quality from concept to shipped product.
• Fluency in C.

Nice to have

• BLE at depth, including PHY understanding and orchestration for performant, power-efficient use.
• Cellular IoT experience: LTE-M or NB-IoT modem integration, power state management, and certification (FCC, PTCRB, carrier approval).
• Securing embedded systems end to end: secure boot, firmware signing, cryptography, and key management.
• OTA and device firmware update at fleet scale: A/B partitions, rollback.
• Factory floor experience with mass production and quality assurance of electronics, including fixing production show stoppers.

Details

• Remote - SF Bay Area location line.
• Annual base salary range $162,400 to $290,000 USD, varying by primary work location.
• Eligible for an initial RSU grant with no vesting cliff, plus ongoing refresh opportunities.