Cătălin Puican

Backend Developer

Backend-focused Computer Engineering student with hands-on experience building full-stack web applications using C#, ASP.NET, React, and MySQL. Strong foundation in REST APIs, databases, and cloud services. Motivated to grow as a backend developer and contribute to real-world software projects.

Contact

Phone: 0745406847
Location: Sibiu, Romania

Professional Experience

Full-Stack Developer - TeScapDeAmenda (Personal Project)

Mar 2026 - Present

Designed and built an end-to-end legal contestation platform for Romanian traffic fines. Developed RESTful backend using C# / .NET 8 ASP.NET Core. Built responsive frontend UI with React 19, TypeScript, and Tailwind CSS. Implemented a custom client-side image processing flow using the HTML Canvas API for privacy-first, in-browser document cropping and redaction. Integrated Vision AI models via OpenRouter/OpenAI to directly extract structured fields from fine images without relying on traditional OCR. Engineered dynamic generation of formal legal contestation letters tailored to user-selected grounds. Managed deployment infrastructure using Docker and Nginx, with custom exception middleware handling robust end-to-end error flows.

Intern - Graffino

Jan 2026 - Feb 2026

Designed and built a service marketplace platform (plumbers, electricians, lawn care). Developed RESTful backend using C# / ASP.NET. Built frontend UI with React. Implemented MySQL database for users and services. Integrated Google Cloud storage for image uploads. Handled API integration, validation, and error handling across frontend and backend. Implemented authentication & role-based access (service providers vs customers).

Intern - Rowaves

Jun 2025 - Jul 2025

Assembled and soldered RF components onto PCBs. Performed electrical and RF measurements using lab equipment. Assisted with PCB testing, debugging, and validation. Followed schematics and technical documentation.

Education

Lucian Blaga University of Sibiu – Faculty of Engineering

Multimedia Systems Engineering – 2023 - 2027

Skills

C# with ASP.NET
React
Firebase
REST APIs
MySQL
Google Cloud

Links