• Integrated vendor ATM software with customer banking systems, ensuring reliable deployment and continuous operation.
• Developed and modified backend components and configuration logic for ATM networks and web-based customer portals.
• Designed internal automation tools and scripts to reduce manual development effort and accelerate delivery timelines.
• Participated in system integration workflows, including API-level data exchange and environment-specific deployment adjustments.
• Investigated and resolved production issues across distributed systems.
• Acted as a communication bridge between customer and vendor multi-disciplinary teams, translating operational needs into technical deliverables.
• Authored technical documentation and contributed to standardizing implementation practices across project teams.

• Managed structured intake and validation of customer energy contracts, ensuring data consistency within internal systems.

• Co-developed and maintained the CS Lab’s website (cslab.unipi.gr), supporting academic resources for 1,000+ students.
• Implemented responsive UI components (HTML, CSS, JS, Bootstrap) and contributed backend functionality using Django and Python.
• Assisted in building a custom classroom management application, supporting instructor and student workflows.
• Performed day-to-day network and system administration across multiple lab environments.
• Designed digital media and graphical assets for departmental communications and events.

• The Trojan Tour Guide of Athens

Material covered:

• Source code editors
• Version control with git
• HTML5
• CSS3
• node.js
• Bootstrap 4

• Designed and implemented a full-stack platform for booking and managing shared workspaces, including availability calendars, space listings, and user review flows.
• Built a distributed authentication system using JWT-based SSO, enabling secure token sharing across multiple independent backend services.
• Developed a QR-based physical access control workflow by integrating Raspberry Pi scanners with a centralized authorization microservice and real-time validation logic.
• Structured the system as modular microservices to support horizontal scaling, service isolation, and future feature expansion.
• Implemented Google OAuth for streamlined user registration and login workflows.
• Developed an administrative dashboard for platform day-to-day operations.

• Designed and implemented a smart home control hub with real-time device state updates and WebSocket-based command execution.
• Developed a modular IoT device communication protocol and extensible handler layer to support various hardware types.
• Built a responsive web UI (Blazor WebAssembly) with multi-user authentication, role-based device permissions, and dynamic layout rendering.
• Integrated a Raspberry Pi–driven prototype device (RGB lighting) controlled through the central automation service.

• Co-developed and maintained the department’s website used by 1,000+ students for course materials, lab access, and announcements.
• Implemented frontend layouts and components and integrated backend logic using Django with a custom content management workflow.
• Handled deployment lifecycle, version updates, and iterative functional and UI maintenance following real user feedback.