I developed an accounting application as a full stack developer. The backend was built with NestJS, implementing JWT authentication, WebSockets for real-time updates and progress tracking, and a REST API. The application was containerized using Docker, and I wrote extensive raw SQL queries for complex data operations. I also implemented Excel file parsing to import data into the system.The frontend was created with Next.js, utilizing shadcn/ui for UI components. The interface included numerous charts and spreadsheets for data visualization. I integrated Payload CMS to manage content and administrative interfaces.

I worked as a full stack developer on a proof-of-concept project where I built both the backend and frontend from scratch. The backend used NestJS, WebSockets for real-time features, Prisma as the ORM, and PostgreSQL as the database. I used AWS S3 with Postgres to store images and documents. The app ran in Docker containers behind Nginx.Authentication was implemented using Google OAuth2 combined with JWT access and refresh tokens. I used Redis to blacklist tokens and handle secure logout. The frontend was built with Next.js, with a focus on clean structure and responsiveness.The goal of the project was to validate the architecture and tech stack, so I kept the code modular, maintainable, and easy to extend.