Freelancer profile translated to English.
Back to original languageAbout Juan José
Senior Firmware Engineer | Embedded Systems · IoT · Edge
Robust and efficient firmware design and development for connected devices, smart metering, IoT/edge, and mechatronic products. End-to-end experience: requirements and architecture → implementation → code reviews and CI/CD → validation/verification and automated tests → release and post-launch support.
Core Stack
- C/C++, Python, Linux, FreeRTOS, bare-metal
- MCUs: Microchip (PIC24/PIC32), STM32, nRF52, Atmel, Texas Instruments
- UART / SPI / I2C, OpenThread, MQTT, BLE
- Git / GitHub / GitLab, SVN, CI/CD, Tracealyzer
What I bring
- Power consumption optimization (low-power) and extended product lifespan
- Firmware tooling and automation for reproducible builds and predictable releases
- AI applied to operations (RAG chatbots with LangChain / OpenAI) for onboarding and support
Featured Experience
- Hidroconta (2025–Present): ultrasonic flow meters; power reduction with Atmel/TI
- Soltec Power Holdings (2020–2025): 5 years of industrial firmware in renewables (PIC, STM32, nRF52, FreeRTOS, OpenThread, MQTT, BLE)
- Soltec: corporate chatbot (ChromaDB, PostgreSQL, Docker, LangChain, OpenAI)
- UAL: environmental control firmware, SCADA/HMI, PID, sensors/PLCs
- Trainingym: ARM wearables (touchscreen, HR, sensors)
Available for remote missions in embedded firmware, IoT, low-power, drivers, and production debugging. Professional English.
Spanish
Native or bilingual
English
Fluent
Remote only
Primarily works remotely
Experience
- HidrocontaFirmware EngineerENERGY AND UTILITIESJanuary 2025 - Today (1 year and 7 months)Murcia, SpainDevelopment of ultrasonic flow meters for hydraulic control and water networks.• Power consumption optimization (low-power) to extend product lifespan• Firmware on Atmel and Texas Instruments microcontrollers• Integration of sensors, data acquisition, and measurement logic in an industrial environment• Close work with hardware: debugging, validation, and reliability improvements
- Soltec Power HoldingsFirmware EngineerENERGY AND UTILITIESFebruary 2020 - February 2025 (5 years)Development and maintenance of firmware in an industrial environment (renewable energy / solar trackers).• MCUs: Microchip PIC24/PIC32, STM32, and Nordic nRF52• Bare-metal and FreeRTOS (optimization with Tracealyzer)• Protocols: UART, SPI, I2C, OpenThread, MQTT, BLE• Bash scripting in Linux and C++ applications for firmware automation• Process improvement, troubleshooting, and version control (SVN, Git, GitLab, SourceTree)• Lifecycle ownership: implementation, review, CI/CD, and production support
- SoltecChatbot DeveloperSOFTWARE PUBLISHINGMarch 2023 - January 2024 (10 months)Development of a corporate AI chatbot to improve internal processes.• Onboarding and training for new hires• Improvement of support and interdepartmental communication• Productivity increase through conversational AI• Stack: ChromaDB, PostgreSQL, Docker, LangChain, OpenAI API, Python, Linux• Winning initiative in Soltec's intrapreneurship competition
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Education
- Degree in Industrial Electronics and Automation EngineeringUniversity of Almería2019Grado en Ingeniería Electrónica Industrial y Automática
- Electronic Product DevelopmentIES EL ARGAR CFGS Development2013