I will develop esp32 or stm32 firmware for your iot device

Are you building an IoT device and need firmware that actually works in the field? I can help.

I'm David, an Electronic Engineer specialized in Embedded Systems. I work with ESP32, STM32, Zephyr RTOS and BLE, writing clean C firmware for real hardware projects, not toy examples.

What I can build for you:

• Peripheral and sensor integration (I2C, SPI, UART, ADC)
• BLE communication and custom GATT profiles
• Low-power firmware with duty-cycle patterns
• Custom drivers for sensors and modules
• Firmware architecture for production devices
• MQTT and IoT connectivity

Why work with me: I've built end-to-end IoT systems, from bare-metal firmware on nRF52840 with Zephyr RTOS to the backend and mobile app that connects to it. I understand the full stack, so I don't create problems at the boundaries between firmware and software.

I write code that is readable, documented and maintainable. Not a quick hack you'll have to throw away in 3 months.

Before starting any project I ask the right questions to understand your hardware, your constraints and your goals. No surprises at delivery.

Not sure if your project fits? Send me a message and I'll tell you honestly.