Ariel C.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.

Embedded Systems Engineer (STM32 / ESP32 / C++) I help build and debug embedded systems — from hardware bring-up to reliable firmware. My work focuses on real-world systems where hardware, firmware and timing interact in non-ideal conditions. Core areas: • Firmware architecture (modular, maintainable, testable) • Hardware/firmware integration and debugging • Communication protocols (I2C, SPI, UART, CAN / DroneCAN) • Experience working with battery-related systems and monitoring challenges I’ve worked on control boards, embedded interfaces and battery-related systems, dealing with typical embedded constraints such as unstable hardware, incomplete documentation and system-level interactions. How I work: • Structured and pragmatic approach to problem solving • Strong focus on debugging and root-cause analysis • Clear communication and realistic expectations • Code designed for long-term maintainability I’m comfortable stepping into projects where things are not fully defined yet and helping turn them into working, stable systems. Available for: • Firmware development (C/C++) • Debugging and system integration • Hardware bring-up support • Refactoring and improving existing codebases If you need someone who can take ownership of embedded problems and work through uncertainty in a structured way, feel free to reach out.