Zain A.

I help companies turn ideas into reliable embedded products from hardware bring-up and firmware development to IoT connectivity and production-ready systems. I am an Embedded Systems Engineer experienced in designing and developing firmware for microcontrollers, IoT devices, wireless products, industrial controllers, and custom electronics. What I can help you with: ✔ Embedded Firmware Development • STM32 (HAL, LL, Bare Metal) • ESP32 / ESP-IDF • Nordic nRF52 • AVR / Arduino • FreeRTOS & Zephyr RTOS ✔ Embedded Linux Development • Raspberry Pi / Orange Pi • Buildroot & Yocto based systems • Linux device integration • Peripheral communication ✔ Connectivity & IoT • BLE, WiFi, MQTT, HTTP • TCP/IP Networking • RS485, RS232 • Cloud-connected devices ✔ Hardware & PCB • Schematic design • PCB design using Altium/KiCad • Prototype debugging • Sensor integration Experience includes: • Smart IoT devices • Audio processing systems • LED controllers • Wireless sensor networks • Industrial communication systems • Battery-powered products I focus on clean, maintainable firmware, reliable hardware integration, and delivering products that are ready for real-world use. If you need someone who understands both firmware and hardware, let's discuss your project.