Home Automation Protocol Embedded Developer

Garhwa - India

Monthly Salary: Not Disclosed

Posted on: 8 hours ago

Vacancies: 1 Vacancy

Job Summary

Role Overview

You will architect develop and maintain embedded firmware for home automation devices that communicate over Zigbee Z-Wave RS485/Modbus BLE KNX and IP-based protocols. This role requires deep protocol knowledge strong microcontroller expertise and the ability to build stable production firmware for commercial smart home products.

This is not a basic embedded role. Only apply if you have real experience implementing at least one home automation protocol end-to-end.

Key Responsibilities / Duties

Protocol Development

Implement and optimize firmware for:

Zigbee 3.0 (clusters ZCL provisioning binding)

Z-Wave (serial API command classes network inclusion/exclusion)

RS485/Modbus (RTU/ASCII polling CRC addressing)

KNX (TP1/IP preferred)

MQTT/IP communication

Build device descriptors command classes attribute handling and network management logic.

Handle commissioning configuration OTA updates and device diagnostics.

Embedded Firmware Development

Develop C/C firmware for microcontrollers like STM32 EFR32 Nordic nRF52 TI CC26xx ESP32 NXP etc.

Work on drivers for UART/SPI/I2C timers ADCs GPIOs PWM DMA.

Implement power optimization watchdogs bootloaders and RTOS-based tasks (FreeRTOS preferred).

Board Bring-Up and amp; System Integration

Work with hardware teams for PCB bring-up pin configuration and sensor/peripheral integration.

Coordinate with gateway/app/cloud teams for seamless device onboarding and field operation.

Validate RF and wired communication performance.

Testing and amp; Validation

Perform protocol sniffing using tools like Ubiqua Simplicity Studio Z-Wave PC Controller logic analyzers Saleae oscilloscopes.

Conduct interoperability testing across different controller ecosystems (SmartThings Home Assistant Amazon etc.).

Execute stress tests long-duration communication tests and EMI/EMC robustness checks.

Documentation and amp; Release

Create protocol documents register maps API definitions configuration sheets and release notes.

Support certification processes (Zigbee Z-Wave KNX BIS if applicable).

Required Skills and amp; Qualifications

Strong C/C embedded coding and debugging.

Must have hands-on development experience in at least one protocol (Zigbee/Z-Wave/RS485/Modbus/KNX).

Deep understanding of embedded architecture memory management timing concurrency.

Experience with RTOS (FreeRTOS or similar).

Proficient with hardware debugging tools (SWD/JTAG logic analyzer RF sniffers).

Strong grasp of CRC packet parsing state machines finite state control and command/response structures.

Preferred / Good-to-Have Skills

Experience developing multi-protocol devices.

BLE Mesh Thread Matter or Wi-Fi IoT exposure.

Understanding of cloud messaging device provisioning and over-the-air updates.

Experience with mass production firmware handling edge-case stability.

Role OverviewYou will architect develop and maintain embedded firmware for home automation devices that communicate over Zigbee Z-Wave RS485/Modbus BLE KNX and IP-based protocols. This role requires deep protocol knowledge strong microcontroller expertise and the ability to build stable production f...