Shoaib Ali

Senior Embedded Systems Engineer

Oct 2025 - Oct 2025 • 0 mos

Freelance IoT Solutions ArchitectWorked as an independent developer specializing in IoT, embedded systems, and real-time data solutions delivering complete hardware to software products for clients requiring custom technical builds from the ground up.Key Project "Real-Time Bluetooth Foot Traffic System":Designed and developed a fully functional distributed IoT foot traffic monitoring system that bridges edge hardware with a central data aggregator. The system utilizes a network of sensors to continuously detect Bluetooth devices across different spatial zones, providing live occupancy counts every 10 seconds. On the backend, configured a central Raspberry Pi hub running a Mosquitto MQTT broker to manage incoming data streams. Built a robust Python aggregator script utilizing the paho-mqtt library that establishes the network connection, processes zone-specific device counts, and generates real-time status reports detailing total active devices. On the edge hardware side, programmed multiple Raspberry Pi Pico 2 W microcontrollers using MicroPython to act as distributed zone sensors. Integrated the micropython-umqtt.simple library via Thonny IDE, allowing each uniquely named Pico "pico_sensor_entrance" to transmit local Bluetooth detection data seamlessly to the central hub. Managed the complete project lifecycle independently including hardware setup, firmware flashing, backend network configuration, cross-layer integration, and final deployment. Delivered comprehensive setup documentation covering every step from OS installation to running the complete network, ensuring the client could operate, deploy, and scale the sensor system confidently without technical assistance. Key Technologies Used: Raspberry Pi, Raspberry Pi Pico 2 W, Python, MicroPython, MQTT Protocol (Mosquitto, paho-mqtt), Bluetooth/BLE, Thonny IDE.

Full-Stack IoT & Embedded Systems Developer

Mar 2025 - Apr 2025 • 1 mo

Freelance Full-Stack IoT & Embedded Systems Developer Worked as an independent developer specializing in IoT, embedded systems, and real-time data solutions delivering complete hardware to software products for clients requiring custom technical builds from the ground up. Key Project "Revvy" Vehicle Telemetry Dashboard: Designed and developed "Revvy", a fully functional Raspberry Pi-based smart vehicle telemetry system that bridges embedded hardware with a modern web interface. The system connects to a car's OBD2 port via a Bluetooth ELM327 adapter, continuously polling live vehicle diagnostics including engine RPM, vehicle speed, and fuel level in real time. On the backend, built a robust Python/Flask REST API server that establishes and manages the Bluetooth OBD2 connection, queries vehicle data using the Python OBD library, and exposes clean API endpoints to serve live metrics to the frontend. The server was configured to run directly on the Raspberry Pi, making the entire system self contained and portable. On the frontend, developed a responsive React.js dashboard that fetches live data from the Flask API every second using Axios, displaying real-time vehicle metrics in a clean and intuitive interface. The dashboard was designed with scalability in mind, making it straightforward to add additional gauges, alerts, or animation layers using libraries like Framer Motion or Lottie in future iterations. Managed the complete project lifecycle independently including hardware setup, Bluetooth pairing, backend API development, frontend dashboard creation, cross-layer integration, and final deployment on the Raspberry Pi. Delivered comprehensive setup documentation covering every step from OS installation to running the full stack, ensuring the client could operate, maintain, and expand the system confidently without technical assistance. Key Technologies Used: Raspberry Pi, Python, Flask, OBD2/ELM327, React.js, Axios, Node.js, REST API, Bluetooth Integration