ESPHome Engineer – Advanced Configuration & Device Integration

SMLIGHT develops cutting-edge smart home and IoT hardware, including Zigbee, Matter, and multi-radio hubs, smart LED controllers, and modular Wi-Fi devices.
Our devices run platforms such as ESPHome, Linux-based SMHUB-OS, SLZB-OS and custom firmware, ensuring flexibility, transparency, and integration with major ecosystems like Home Assistant.

We are now looking for an ESPHome Engineer — someone who lives and breathes YAML, understands the internals of ESPHome, and can transform complex hardware configurations into efficient, elegant, and maintainable firmware builds.

What will you do

• Design and maintain ESPHome configurations (.yaml) for new and existing devices (Zigbee coordinators, LED controllers, IR transmitters, sensor modules, etc.)

• Implement and optimize device logic, sensors, communication buses, and peripherals (UART, I²C, SPI, ADC, PWM, GPIO, etc.)

• Develop modular and reusable YAML templates for product lines and internal projects

• Ensure firmware compatibility across multiple hardware variants (ESP32, ESP32-S3, etc.)

• Collaborate with hardware and firmware engineers to map pinouts, components, and features

• Integrate device configuration with Home Assistant, MQTT, and API endpoints

• Maintain clear structure, documentation, and versioning for all YAML builds

• Test, debug, and validate configurations on physical hardware

• Provide input for future hardware designs to improve ESPHome compatibility

Requirements

• Proven experience with ESPHome (advanced YAML configuration, custom components, lambda usage)

• Deep understanding of ESP32 / ESP8266 microcontrollers and hardware interfaces (UART, I²C, SPI, ADC, PWM, GPIO, etc.)

• Knowledge of Home Assistant, MQTT, and related smart-home ecosystems

• Experience debugging hardware-related issues (logs, compile errors, pin conflicts, etc.)

• Strong skills in structuring and documenting ESPHome projects

• Ability to work independently and propose improvements to hardware/firmware integration

• Familiarity with electronics schematics, sensors, and peripheral modules

• Basic knowledge of Python / C++ (for ESPHome custom components) is a plus

• English proficiency for communication with the engineering team

Nice to have

• Experience with Matter, Zigbee2MQTT, or Tasmota

• Familiarity with Jinja templates and YAML modularization

• Prior contributions to ESPHome community or public repositories

• Experience working with LED controllers, IR devices, or multi-radio hubs

Please submit your application by this link:  https://forms.gle/gUeGaQVb6kpeoyjb9