Dilawar A.

I help startups and companies build reliable IoT devices - from prototype to production. Worked on ESP32, nRF5x/nRF9x, LTE, BLE, and embedded Linux systems. Delivered products used in real deployments (industrial, consumer, fleet). If your device is stuck, unstable, or not ready for production — I can fix it. 🔹 What I can help you with: • Build your IoT product from scratch (hardware + firmware + connectivity) • Fix unstable firmware, crashes, or performance issues • Bring-up new boards and debug hardware/software issues • BLE / WiFi / LTE connectivity (ESP32, nRF, cellular modules) • OTA updates, device management, cloud integration • Optimize for low power, reliability, and production readiness Core stack: • MCUs: ESP32, STM32, nRF5x/nRF9x • RTOS: FreeRTOS, Zephyr • Connectivity: BLE, WiFi, LTE, NFC, MQTT, HTTP • Interfaces: I2C, SPI, UART, USB • Cloud: AWS IoT, custom backends Recent work: • Built LTE IoT device using nRF9160 + u-blox modules • Developed BLE systems on ESP32 used in production • Designed arcade controller hardware + firmware • Delivered OTA + bootloader systems (MCUboot) If you have hardware that needs production-ready firmware, message me with your target MCU and timeline and I'll tell you whether I can take it on