I will develop ble firmware for nrf52 or esp32 devices

Building a BLE device and struggling with the firmware side? That's exactly what I do.

I'm David, an Embedded Systems Engineer with hands-on experience building BLE firmware on nRF52840 with Zephyr RTOS and ESP32. I've implemented custom GATT profiles, BLE notifications, connection parameter negotiation and low-power BLE patterns from scratch.

What I can build for you:

• Custom GATT services and characteristics
• BLE notifications and indications
• Peripheral and central role firmware
• Low-power BLE with duty-cycle patterns
• Integration with sensors over I2C or SPI
• BLE to MQTT bridge firmware

Why work with me: I understand BLE from the protocol level, not just copy-paste examples. I've built devices where the firmware talks to a mobile app and a cloud backend, so I understand what the other side of the connection needs.

If your BLE device needs to actually be reliable in the field, not just work in a demo, I can help.

Send me a message before ordering if you want to discuss your project first.