Usman

Embedded System Engineer

Fiverr • Fulltime

Aug 2020 - Present • 5 yrs 10 mos

1 - Developed firmware for microcontrollers including Arduino and ESP32 using C/C++. 2 - Designed and implemented embedded applications with sensor integration and actuator control. 3 - Built communication interfaces: UART, SPI, I2C, Wi-Fi, and Bluetooth (BLE). 4 - Developed IoT systems with cloud integration (MQTT, HTTP APIs). 5 - Implemented multitasking and concurrency using FreeRTOS on ESP32. 6 - Optimized memory usage, power consumption, and performance of embedded applications. 7 - Created custom drivers for sensors, displays (TFT/OLED), and peripherals. 8 - Debugged hardware-software integration issues using serial debugging and logic analyzers. 9 - Designed state machines and event driven architectures for embedded applications. 10 - Worked with file systems (SD card, SPIFFS/LittleFS) for data logging. 11 - Integrated OTA (Over-the-Air) firmware update systems. 12 - Performed testing, validation, and debugging of embedded products.

Embedded Developer

Consulting • Fulltime

May 2021 - Jan 2022 • 8 mos

1 - Developed and maintained embedded firmware for ESP32 and Arduino based systems, delivering reliable performance for IoT and consumer electronics applications. 2 - Designed and implemented BLE and Wi-Fi communication modules for device-to-mobile and cloud connectivity. 3 - Built modular and scalable firmware architectures using FreeRTOS, enabling multitasking for sensor processing, communication, and UI handling. 4 - Improved system performance by optimizing memory usage, reducing power consumption, and enhancing responsiveness in embedded applications. 5 - Developed custom drivers for sensors (motion, temperature, proximity) and integrated multiple peripherals including LCD/TFT displays and SD card storage. 6 - Led debugging and root cause analysis of hardware-software integration issues, reducing system failure rates and improving overall stability. 7 - Delivered multiple IoT prototypes from concept to deployment, including smart home automation, tracking systems, and wearable devices with measurable improvements in efficiency and usability.