Staff Embedded Platform Engineer

You will own core platform firmware for a distributed embedded system of multiple microcontrollers, building reusable drivers, services, and test infrastructure on Zephyr RTOS. This is a platform-facing role. You'll close real gaps across the stack, from standing up a device watchdog/supervision design, to building driver test suites for our automotive Ethernet PHY driver, to hardening real-time Ethernet and custom serial protocols, so application teams can build on a stable, scalable foundation.

• Design and implement reusable platform software across a multi-MCU distributed embedded system, favoring clean driver/service abstractions and portable component interfaces over app-specific one-offs.
• Architect and implement device reliability infrastructure from the ground up, including watchdog and task-supervision design (feeding strategy, timeout policy, fault capture, and recovery/reset-reason reporting).
• Own real-time Ethernet communication, including 10
  
  BASE-T1S with PLCA, IEEE 1588/PTP time synchronization, and UDP transport, and tune it for reliability under bandwidth-constrained, congested networks (including interaction with over-the-air updates).
• Develop and maintain custom serial protocols over UART, I2C, and SPI (e.g. multi-device I2C command/streaming protocols with CRC/PEC integrity, firmware-update windowing, and robust error handling) for reliable exchange between MCUs and external components.
• Specify, design, implement, and test both bare-metal and RTOS low-level firmware, including device drivers, HAL abstractions, and Kconfig/device tree integration for a scalable, multi-board platform.
• Build component test infrastructure: author unit/integration test suites (e.g. Twister, emulators/mocks, hardware-in-the-loop) for drivers and libraries that today lack coverage, and drive maturity, stability, and release-readiness metrics.
• Resolve ambiguity in requirements, specifications, and hardware/vendor documentation, and turn open items into concrete, testable designs.
• Bring up hardware and debug at bench and hardware-in-the-loop level using logic analyzers, oscilloscopes, and JTAG/SWD debuggers to verify software against silicon.
• Define and implement system-level power, compute, and communication requirements, enabling different applications to select different capability/configuration combinations (including low-power modes).
• Profile power, CPU, and bus utilization at the submodule and system level and drive optimizations.
• Collaborate with verification and validation teams to build comprehensive test plans and validate firmware functionality, stability, and performance across operating and low-power conditions.
• Interface with external silicon/module vendors: review firmware/register specifications, provide design guidance, and integrate and validate vendor code releases.
• Maintain clear, concise documentation of design decisions, driver/service APIs, and firmware architecture.
• Replace temporary or placeholder subsystems with long-term, maintainable architectures.

• Bachelor's degree in Electrical Engineering, Computer Science, or Computer Engineering (or equivalent experience).
• 10+ years of relevant embedded development experience in
  
  C.
• Hands-on experience in both bare-metal and RTOS environments.
• Experience authoring and maintaining automated firmware test suites (unit, integration, and hardware-in-the-loop).
• Experience with issue-tracking and documentation tools (e.g. JIRA/Confluence or equivalent) for tracking requirements, tasks, and results.
• Knowledge of electrical engineering fundamentals, including circuit analysis and design.

• Zephyr RTOS experience (device tree, Kconfig, Twister, driver model, west), strongly preferred.
• Experience developing and testing networking drivers/stacks, especially automotive/industrial Ethernet (10
  
  BASE-T1S, PLCA, MAC-PHY interfaces, PTP/time synchronization).
• Experience designing watchdog, fault-handling, and safe-recovery mechanisms on resource-constrained MCUs.
• Deep experience with UART/I2C/SPI protocol design and debugging (CRC/PEC, framing, retry/backoff, bus contention).
• Experience integrating vendor source code and…