Staff or Senior Firmware Engineer

Responsibilities

• Select SoCs, memory, and sensors and validate hardware choices through prototypes.
• Bring up new boards and platforms from first power-on, including system initialization and peripheral configuration.
• Develop peripheral drivers, secure bootloaders, device firmware updates, power-management layers, and connectivity management.
• Optimize firmware protocols and hardware management for long battery life.
• Work with product, full-stack, mobile, quality, electrical, cloud, and hardware teams to ship complete products.
• Lead firmware development from architecture through validation and product launch across multiple new products.
• Mentor engineers, conduct design and code reviews, improve engineering practices, and connect technical decisions to customer outcomes.

Requirements

• 8+ years building firmware for resource-constrained systems.
• End-to-end leadership of firmware development for several products, from concept through launch.
• Substantial bare-metal and RTOS experience, including Zephyr, FreeRTOS, or equivalent.
• Experience bringing up new boards and debugging the hardware-software boundary.
• Fluency in SPI, I2C, UART, CAN, ADC, and C.
• Experience using oscilloscopes, network analyzers, or RF spectrum analyzers for hardware debugging.
• Senior-level experience spanning hardware, firmware, cloud, and quality, with a track record of cross-team consensus building.
• Ability to read linker maps and stack traces and diagnose corrupted heaps.
• Experience with automated testing, technical documentation, design reviews, and post-mortems.
• Preferred experience with BLE, cellular IoT and LTE-M or NB-IoT modem integration, FCC/PTCRB and carrier approvals, embedded security, firmware signing, cryptography, key management, OTA updates, A/B partitions, rollback, electronics manufacturing, and factory-floor production quality.
• Experience with C, Golang, Google protocol buffers, and AWS is useful but not required.

Benefits

• Above-market total compensation including equity, performance-based incentives, and benefits.
• Employee-led remote and flexible working model, with offices available for in-person work and location requirements where applicable.
• Health benefits, parental leave, and a professional development stipend.
• Samsara for Good fund and employee-led team incentive programs.
• Employment offers are contingent on maintaining the legal right to work in the company and specified work location.