Muhammad Hamza Z.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Sep 25, 2026.

I’m Muhammad Hamza Zain, an Electronics Engineer specializing in intelligent hardware design, embedded firmware, and IoT solutions. With over 3 years of hands-on experience, I bridge the gap between innovative concepts and production-ready electronics. My expertise covers the entire lifecycle of an embedded product: Hardware Design: Custom PCB schematics & layouts built for reliability, low power, and cost efficiency Firmware Development: Clean, scalable microcontroller code (STM32, ESP32, PIC, AVR, Arduino) IoT Connectivity: Seamless integration with Wi-Fi, BLE, LoRa, and MQTT for cloud-connected devices Prototyping & Optimization: From functional proof-of-concept to manufacturable, scalable designs I don’t just deliver files—I deliver solutions that work in the real world. Whether it’s designing a compact PCB for a wearable device, optimizing firmware for low-power IoT sensors, or architecting a secure industrial IoT system, I focus on performance, scalability, and reliability. 💡 What makes me different? ✔ Full-stack embedded expertise – I handle hardware, firmware, and IoT integration in one flow ✔ Future-proof design thinking – I build with scalability & manufacturability in mind ✔ Clear technical communication – no jargon, just actionable insights ✔ Proven results – I can showcase working projects live in a meeting If you’re looking for someone who can transform your electronics idea into a robust IoT product, let’s connect. I’ll help you save time, reduce costs, and avoid costly redesigns while delivering industry-grade embedded solutions.