Full-Stack Developer & IoT Engineer
Building web applications, Python tools, and connected IoT systems — from React dashboards to Raspberry Pi sensor networks.
I'm Giorgos Stavaras, a Greek engineer with a background in Automation & Industrial Technology who has evolved into a full-stack web developer. I bridge the gap between the physical and digital worlds — building production-ready web applications in React and Node.js while also designing and deploying Raspberry Pi and Arduino-based hardware systems.
Over the past 3+ years I've delivered projects ranging from real-time IoT dashboards and industrial data loggers to e-commerce APIs and solar monitoring systems. Whether it's a REST API, a Python automation script, or a sensor network running on the edge, I care deeply about writing clean, reliable, and well-documented code.
I'm currently open to freelance opportunities — especially projects that combine web technologies with hardware, IoT, or Python automation.
A broad toolkit spanning front-end, back-end, embedded systems, and DevOps — allowing me to own a project end-to-end.
A selection of real projects — web apps, IoT systems, and Python tools built for clients and personal learning.
A full-stack React + Node.js web dashboard for monitoring and controlling IoT devices in real time. Features live sensor data visualization with Chart.js, MQTT WebSocket integration, user authentication with JWT, and a REST API backend. Built for a home automation client.
A low-cost network-attached storage and surveillance system built on Raspberry Pi Zero. Streams live camera feed via web interface, stores recordings locally, motion detection with OpenCV (Python), accessible remotely via VPN tunnel.
Automated data acquisition system using Python to collect readings from industrial sensors via Modbus RTU/TCP. Stores data in PostgreSQL, generates daily PDF reports automatically, sends email alerts on threshold breaches. Runs headless on Raspberry Pi.
A production-ready e-commerce backend built with Node.js and Express. Implements full product catalogue, cart, orders, Stripe payment integration, JWT authentication, role-based access control, and rate limiting. Fully documented with Swagger.
Precision temperature control system using Arduino Mega and PID algorithm. Controls a heating element via PWM, reads thermocouple via MAX31855, displays real-time graph on LCD, and logs data to SD card. Used in a small industrial application.
Python-based monitoring system for a small off-grid solar installation. Reads voltage, current, and battery state-of-charge via INA219 sensors over I2C. Web dashboard built with Flask shows live metrics and historical graphs. Alerts owner via Telegram bot when battery is low.
Full-stack SaaS application with real-time collaboration using Socket.io. Features Kanban boards, task assignments, team workspaces, role-based permissions, email notifications, and Stripe subscription billing. Deployed on Docker with CI/CD pipeline.
Open-source MCP server that connects Claude AI directly to Google Sheets. 32 tools for creating, reading, writing and formatting spreadsheets. Supports OAuth2, Service Account and ADC authentication. Compatible with Claude Desktop & Claude Code.
Intelligent document processing tool powered by OpenAI API. Extracts key information from PDFs and Word files, summarizes content, answers questions about uploaded documents, and generates structured reports. React frontend with FastAPI backend, deployed with Docker.
Whether you need a web application, an IoT system, or a Python automation pipeline — I can help you build it reliably.
Full-stack web applications built with modern technologies. From simple landing pages to complex SaaS platforms — responsive, fast, and maintainable.
End-to-end IoT solutions from hardware selection and firmware to real-time dashboards. Specialised in low-cost, reliable edge devices.
Scripting and automation solutions that eliminate repetitive tasks, collect data, and generate insights — saving time and reducing human error.
Connecting hardware, software, and cloud platforms into a cohesive system. I specialise in bridging the gap between the physical world and web interfaces.
I'm currently available for freelance projects — web development, IoT systems, and Python automation. Whether you have a clear brief or just an idea, feel free to reach out and let's talk about what I can build for you.