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Andrija Mitrović

@andrijamitrovi

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Full Stack Engineer Intern at HTEC who helped develop a football match prediction app with ASP.NET Core and React.

Serbia

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At HTEC, I collaborated with a team of three to develop a full-stack football match prediction application using ASP.NET Core, React, and PostgreSQL. It lets users create team lineups and predict match outcomes.

I developed REST API endpoints using CQRS with MediatR and EF Core, implemented React features, and wrote xUnit and Jest tests. I also used Git, Docker Compose, and GitHub Actions as part of the team’s development and deployment workflow.

At ASEE, I developed a REST API for a Personal Finance Management application using ASP.NET Core and PostgreSQL. I implemented transaction categorisation logic and filtering endpoints, and tested backend functionality with xUnit and Postman.

I built and deployed FitTrack, a workout tracking application, using ASP.NET Core, React, TypeScript, and PostgreSQL. I implemented JWT-based authentication, tested key user flows with Playwright, and deployed the app to fitcadence.net using Docker, Nginx, and HTTPS.

Experience

Work history, roles, and key accomplishments

Full Stack Engineer Intern

HTEC

Jul 2026 - Present (4 months)

Collaborated in a team of three to develop a full-stack football match prediction application using ASP.NET Core, React, and PostgreSQL. Developed REST API endpoints using CQRS with MediatR and EF Core, implemented frontend features in React, and wrote automated tests using xUnit and Jest.

ASP.NET Core React PostgreSQL CQRS MediatR EF Core xUnit Jest Git Docker Compose GitHub Actions CI CD

Back End Engineer Intern

ASEE

Jul 2025 - Present (1 year 4 months)

Developed a REST API for a Personal Finance Management application using ASP.NET Core and PostgreSQL, enabling users to create, log, and categorise financial transactions. Implemented transaction categorisation logic and filtering endpoints, and wrote tests using xUnit and Postman.

ASP.NET Core PostgreSQL REST APIs xUnit Postman Docker Git

Education

Degrees, certifications, and relevant coursework

University of Kragujevac, Faculty of Natural Sciences and Mathematics

B.Sc., Computer Science

2018 -

Pursuing a B.Sc. in Computer Science with coursework in algorithms, data structures, operating systems, databases, software engineering, and computer networks.