Brian L.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 Nov 5, 2026.

Hardware & Embedded Systems Engineer specializing in firmware development, electronic hardware design, PCB development, and IoT product engineering. I develop embedded systems that operate reliably in real-world environments, from early-stage prototypes to production-ready products. My experience includes designing hardware architectures, developing low-level firmware, integrating sensors and communication interfaces, debugging complex hardware-software interactions, and supporting manufacturing validation. Core capabilities include: - Embedded Firmware Development (C/C++) - STM32, ESP32, ARM Cortex-M Platforms - RTOS-Based Applications (FreeRTOS) - PCB Design & Hardware Development - Analog & Digital Electronics - Power Management & Signal Conditioning - Sensor & Peripheral Integration - BLE, Wi-Fi, UART, SPI, I2C, CAN Communication - Hardware Bring-Up & System Validation - Product Testing & Manufacturing Support I am comfortable working across the entire development stack of an embedded product, from schematic review and PCB design to firmware architecture, debugging, optimization, and field deployment. Technology Stack: STM32 | ESP32 | ARM Cortex-M | Embedded C/C++ | FreeRTOS | Altium Designer | KiCad | BLE | Wi-Fi | MQTT | UART | SPI | I2C | CAN | Git | JTAG/SWD Debugging Whether you need firmware for a custom device, assistance with PCB development, hardware troubleshooting, or complete embedded product engineering support, I focus on delivering reliable and maintainable solutions that are ready for deployment.