Senior Embedded Firmware Engineer

We are seeking a Senior Firmware Engineer with 5–8 years of professional embedded development experience who has strong experience building production embedded systems on modern wireless MCU platforms such as Espressif ESP
32. In this role, you’ll work hands‑on across the device firmware stack, from schematic review and board bring‑up through production firmware, OTA, and certification.

We dedicate each engineer to a single project in order to promote focus and minimize context switching. You will be developing production‑grade firmware for connected devices from bring‑up through production deployment and ongoing maintenance.

You will develop firmware across the full device lifecycle, including schematic review, board bring‑up, driver integration, BLE provisioning, cloud connectivity, OTA updates, and certification readiness.

You will also participate in hardware debugging and validation using tools such as JTAG/SWD, logic analyzers, and protocol sniffers to diagnose low‑level issues across firmware, hardware, and network layers.

You’ll collaborate closely with hardware engineers, contract manufacturers, and cross‑functional teams to deliver production‑ready devices.

This role involves debugging complex, real‑world interoperability issues across connected‑device ecosystems, requiring deep protocol‑level understanding and hands‑on problem solving.

• Design, develop, and maintain production firmware for ESP
  32‑based connected devices using ESP-IDF
• Bring up new hardware and integrate drivers for sensors, actuators, LEDs, and other peripherals
• Implement BLE provisioning, Wi‑Fi connectivity, and secure cloud communication with AWS IoT Core over MQTT
• Build and maintain reliable OTA update mechanisms, including rollback and staged rollouts
• Debug and resolve issues across firmware, hardware, wireless, and cloud layers, from development through production
• Partner with hardware engineers and contract manufacturers on factory flashing, device provisioning, and production readiness
• Support certification (e.g., FCC) and hardware build phases (EVT/DVT/PVT)
• Collaborate with mobile and backend teams on device data models, telemetry, and device‑to‑cloud interfaces
• Contribute to firmware CI/CD, test tooling, and technical documentation

• 5–8 years professional embedded/firmware engineering in C/C++
• Significant experience with Espressif ESP
  32 platforms using ESP-IDF, including RTOS‑based development, OTA update mechanisms, low‑level driver integration (I2C, SPI, UART, ADC, GPIO), and production firmware deployment.
• Direct, demonstrable experience developing connected‑device firmware on modern wireless platforms such as ESP
  32, including Bluetooth Low Energy, Wi‑Fi, and related connectivity technologies.
• Hands‑on experience with wireless communication stacks such as BLE and Wi‑Fi at the firmware level.
• Experience debugging protocol‑level communication issues, wireless connectivity problems, device provisioning flows, and interoperability challenges in connected‑device ecosystems.
• Experience connecting devices to cloud IoT platforms such as AWS IoT Core using MQTT over TLS, including certificate‑based authentication and device state synchronization.
• Experience integrating sensors, actuators, and peripherals such as RFID readers, accelerometers, motion sensors, LEDs, and pumps.
• Comfortable reading technical specifications and translating them into production‑quality firmware implementations.

• Contributions to open‑source ESP-IDF or nRF Connect SDK project
• Background in adjacent protocols — Thread, Zigbee, Z‑Wave, BLE Mesh — demonstrating breadth across the connected device landscape
• History of working in a consultancy or product…