Senior Firmware Engineer

Foundation · San Francisco Bay Area · 1 mo ago

On-siteManufacturing$180k–$260k/yrFull-time

About the role

To develop, Develop, optimize, and maintain firmware in C and C++ for 32-bit microcontrollers.

Build applications on top of FreeRTOS and write bare-metal drivers.

Design and implement peripheral drivers and integrations: I2C, SPI, UART, PWM, ADC, and CAN-FD.

Bring up new hardware: validate power rails, clocks, peripherals, and communication buses.

Profile and tune firmware for timing, memory footprint, and power consumption.

Debug complex hardware/firmware issues at the bench using oscilloscopes, logic analyzers and multimeters.

Write clear, testable code with unit tests, on-target tests, and code reviews.

Collaborate with hardware engineers on schematic and layout reviews from a firmware perspective.

Document designs, bring-up procedures, and known issues.

Responsibilities

Develop, Develop, optimize, and maintain firmware in C and C++ for 32-bit microcontrollers.
Build applications on top of FreeRTOS and write bare-metal drivers.
Design and implement peripheral drivers and integrations: I2C, SPI, UART, PWM, ADC, and CAN-FD.
Bring up new hardware: validate power rails, clocks, peripherals, and communication buses.
Profile and tune firmware for timing, memory footprint, and power consumption.
Debug complex hardware/firmware issues at the bench using oscilloscopes, logic analyzers and multimeters.
Write clear, testable code with unit tests, on-target tests, and code reviews.
Collaborate with hardware engineers on schematic and layout reviews from a firmware perspective.
Document designs, bring-up procedures, and known issues.

Requirements

Strong proficiency in C and modern C++ for embedded targets, including understanding of memory layout, linker scripts, startup code, and ISRs.

Hands-on experience building production firmware on FreeRTOS (tasks, queues, semaphores, mutexes, priority inversion, stack sizing) and on bare-metal systems (super-loops, interrupt-driven designs).

Solid working knowledge of I2C, SPI, PWM and ADC.

Practical experience with CAN-FD: frame formats, bit timing, error handling, and integration with higher-layer protocols.

Experience with bootloaders, OTA/firmware updates, and secure boot.

Demonstrated ability to debug hardware/firmware interactions using oscilloscopes and logic analyzers (e.g., Saleae, Keysight, Tektronix).

Comfortable reading datasheets, reference manuals, and schematics.

Proficient with Git, toolchains (GCC/Clang, arm-none-eabi), build systems (CMake/Make), and on-target debuggers (GDB, J-Link, ST-Link, OpenOCD).

Motor control experience: BLDC/PMSM and FOC

Zephyr RTOS: device tree, Kconfig, driver model, and writing out-of-tree modules.

EtherCat and FoE

Qualifications

Motor control experience: BLDC/PMSM and FOC

Zephyr RTOS: device tree, Kconfig, driver model, and writing out-of-tree modules.

EtherCat and FoE

Skills

Strong proficiency in C and modern C++ for embedded targets, including understanding of memory layout, linker scripts, startup code, and ISRs.
Hands-on experience building production firmware on FreeRTOS (tasks, queues, semaphores, mutexes, priority inversion, stack sizing) and on bare-metal systems (super-loops, interrupt-driven designs).
Solid working knowledge of I2C, SPI, PWM and ADC.
Practical experience with CAN-FD: frame formats, bit timing, error handling, and integration with higher-layer protocols.
Experience with bootloaders, OTA/firmware updates, and secure boot.
Demonstrated ability to debug hardware/firmware interactions using oscilloscopes and logic analyzers (e.g., Saleae, Keysight, Tektronix).
Comfortable reading datasheets, reference manuals, and schematics.
Proficient with Git, toolchains (GCC/Clang, arm-none-eabi), build systems (CMake/Make), and on-target debuggers (GDB, J-Link, ST-Link, OpenOCD).
Motor control experience: BLDC/PMSM and FOC
Zephyr RTOS: device tree, Kconfig, driver model, and writing out-of-tree modules.
EtherCat and FoE

Benefits

We provide market standard benefits (health, vision, dental, 401k, etc.). Join us for the culture and the mission, not for the benefits.

Pay

The annual compensation is expected to be between $180,000 - $260,000. Exact compensation may vary based on skills, experience, and location

Schedule

Software Engineering

San Francisco, CA