Muhammad Bilal J.

I help startups and founders turn hardware ideas into working prototypes and production-ready products: PCB, firmware and enclosure, all from one engineer. In 7+ years and 150+ Upwork projects (14,000+ hours), I've built IoT devices, wearables, health-monitoring products and custom embedded hardware for clients worldwide, many of them taken all the way to manufacturing. WHAT I CAN BUILD FOR YOU • Schematic design and PCB layout (2 to multilayer) in Altium, KiCad and EasyEDA • Embedded firmware for ESP32, STM32, nRF and Arduino • IoT devices with BLE, Wi-Fi, GPS, LTE and sensors • Wearables and compact, battery-powered, low-power designs • Companion mobile apps (Android/iOS) that connect to your device over BLE or Wi-Fi: live data, control, alerts and dashboards • Enclosure and product design that fits your electronics • Prototype testing, debugging and redesign of existing boards • Manufacturing-ready files: Gerber, BOM, CPL and STEP, plus factory support RECENT PROJECTS • ESP32 GPS tracker with real-time location and geofencing • BLE wearable fitness tracker for ankle activity monitoring • Custom battery charger and BMS board with cell balancing WHY CLIENTS WORK WITH ME Most hardware projects fail at the handoff between PCB, firmware and enclosure. I design all three together from day one, thinking about mechanical fit, component availability, assembly, testing and DFM. That means fewer redesigns, fewer surprises at the factory, and a product that actually works in the real world. HOW I'LL WORK 1. You share your idea, sketch or existing design. 2. I reply with a feasibility check, a component plan and a clear quote. 3. I deliver in milestones, with progress updates and test results at each step. 4. You receive complete manufacturing files and support through production. Have a hardware idea or a board that isn't working? Send me a message with what you're building. I usually reply within a few hours.