I will develop esp32 and arduino iot firmware with sensors and mqtt

Need dependable ESP32, ESP8266 or Arduino firmware for an IoT, monitoring or automation project? I am an electrical engineer who programs and tests embedded devices, from a single sensor node to a connected multi-device system. What I build:- Sensor integration: DHT11/DHT22, DS18B20, BME280, ultrasonic, PIR, soil moisture, gas, current and more- Relay, motor, display and actuator control- WiFi, Bluetooth and MQTT communication- HTTP and REST API connections- Dashboards and apps: Home Assistant, Node-RED, Firebase, Blynk- OTA updates, deep sleep and auto-reconnect logic- Fixes and upgrades for existing firmware Every order includes:- Clean, commented C/C++ source code (Arduino IDE or PlatformIO)- Wiring diagram and setup notes- Testing guidance for your hardware Please note: I deliver firmware and documentation. Hardware purchase and shipping are not included. Before ordering, message me your board model, sensors or modules, required behavior and any existing code, and I will confirm scope and recommend the right package.