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cosmiinn75/README.md

Hi, I'm Cosmin

Computer & Information Technology Student | Java & Spring Boot | Flutter

I'm a Computer and Information Technology student at UPB – ETTI, mainly focused on backend development.

I enjoy working on backend architecture, REST APIs, databases, security, and testing. I also build mobile and web applications with Flutter, which allows me to work on complete applications, from backend to frontend.

Currently, I'm developing my own product, TutorFrame, improving my software engineering skills, and looking for opportunities to gain professional experience as a Java / Backend Developer Intern.


Featured Projects

TutorFrame — In Development

TutorFrame is a commercial tutoring management platform I'm building from scratch, with the goal of launching it as a production application for real users.

The platform is designed to help tutors manage their students, groups, sessions, recurring schedules, and learning materials through mobile and web applications.

I'm developing the entire system, including backend architecture, database design, business logic, authentication, automated testing, and Flutter frontend integration.

Stack: Java Spring Boot Spring Security Spring Data JPA PostgreSQL Flutter Dart Docker

Proprietary software — source code is private.

Fitness Tracker

Backend API · Flutter Mobile App

A full-stack fitness application for tracking workouts, personal records, and training goals.

The backend includes JWT authentication with refresh token rotation, REST APIs, Flyway migrations, pagination and filtering, automated testing, Docker support, and GitHub Actions CI.

Stack: Java Spring Boot Spring Security MySQL Flutter JUnit Mockito Docker

Other Projects

  • Mini Banking API — A Spring Boot REST API focused on banking operations and business logic.
  • Tower Defense — A Unity game with 10 levels, upgrade systems, and Spring Boot backend integration.

Tech Stack

Backend

Java Spring Boot Spring Security Hibernate MySQL

Mobile & Web

Flutter Dart

Other Languages

C C++ C#

Tools & Technologies

Git GitHub Docker GitHub Actions Linux Postman


Currently Learning

  • Software architecture & system design
  • Advanced Java and Spring Boot
  • Data Structures & Algorithms
  • Database design and performance optimization
  • Application security and testing

I'm also interested in open-source development and learning from larger codebases.


Connect With Me

LinkedIn GitHub Email

Pinned Loading

  1. TowerDefense-Unity TowerDefense-Unity Public

    A Tower Defense prototype inspired by Kingdom Rush, developed in Unity. Focuses on wave management, scriptable object-driven enemies, and modular game logic.

    C#

  2. tower-defense-progress-api tower-defense-progress-api Public

    Spring Boot backend API for a Unity Tower Defense game, featuring JWT authentication, player progress saving, level unlocks, and stars per level.

    Java

  3. mini-banking-api mini-banking-api Public

    A Java Spring Boot banking REST API with JWT authentication, account management, deposits, withdrawals, transfers, transaction history, MySQL persistence, and automated tests.

    Java

  4. fitness-tracker-api fitness-tracker-api Public

    Secure Spring Boot REST API for strength-training tracking with JWT authentication, custom exercises, workout templates, training goals, progress analytics, MySQL, Flyway, Docker, and Testcontainers.

    Java 2

  5. fitness-tracker-app fitness-tracker-app Public

    Cross-platform fitness tracking app built with Flutter, featuring workout creation, exercise tracking, sets, reps, weight, and RIR.

    Dart