Principal Embedded Firmware Engineer

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🔥 2 hours ago

🏄 California – Remote

🏄 California – Remote

💵 $150k - $190k / year

⏰ Full Time

🔴 Lead

🔧 Hardware Engineer

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📋 Description

• Take technical ownership of the CR-One firmware platform and its build, flash, provisioning, release, and update pipelines • Safely extend and improve firmware running on devices in customer and partner environments • Own the OTA release lifecycle, including signing, staged deployment, rollback, health validation, and incident response • Diagnose firmware and hardware problems using logs, telemetry, serial traces, and controlled reproduction • Improve reproducible builds, release documentation, and operational visibility • Maintain backward compatibility across firmware versions, device configurations, and shared wire protocols • Support factory programming, provisioning, production testing, hardware revisions, and manufacturing failure analysis • Partner with backend and dashboard engineers on device configuration, telemetry, fleet health, and remote support • Help define the firmware architecture for future CR-One generations • Improve the system incrementally while continuing to deliver customer and partner capabilities • Work closely with hardware, backend, product, manufacturing, technical services, and external engineering partners

🎯 Requirements

• Strong professional in embedded systems, infrastructure, performance-sensitive, or similarly demanding software • Substantial hands-on microcontroller firmware experience • Experience with RTOS-based systems, interrupts, peripheral drivers, persistent state, and resource-constrained devices • Ability to bring up and debug hardware directly from datasheets, register maps, and protocol specifications • Experience supporting embedded product through production and after deployment • Understanding of firmware release safety, OTA updates, device recovery, and field-failure investigation • Strong bench-debugging skills • Experience taking ownership of a large, evolving codebase and improving it without stopping delivery • Sound engineering judgment and ability to communicate clearly across firmware, hardware, backend, product, and operations teams • Preferred: Embedded Rust or Rust on ESP-IDF; ESP32, ESP-IDF, FreeRTOS, or comparable embedded platforms; LTE-M, NB-IoT, Quectel, u-blox, or other cellular modem integrations; MQTT, TLS, mutual TLS, PKI, X.509, and certificate enrollment; NFC/RFID protocols; USB device stacks, HID, CDC, TinyUSB, BLE, and GNSS; secure boot, flash encryption, hardware provisioning, and protected key storage; differential or delta OTA systems; binary and JSON serialization formats; Python, Bash, firmware release tooling, cross-compilation, and build automation; MQTT-broker or fleet-management experience • Visa sponsorship is not available

🏖️ Benefits

• Fully remote (can be hybrid if local to Los Alamitos, CA) • PTO 3+ weeks annually + holidays • 401K with employer match • Gym, phone, professional development, etc. reimbursements • Healthcare insurance including medical, dental, vision, short and long term disability, etc.

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