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AndrzejSzelag/README.md

Hi, I'm Andrzej

Java Developer | Backend Architect | Tech Passionate

About Me

  • Currently working as a Java Developer.
  • Continuously enhancing my expertise in Spring (with a particular focus on Spring Security), and Clean Architecture (including SOLID principles).
  • Growing interest in DevOps practices (CI/CD, automation, cloud solutions).
  • Exploring the potential of Artificial Intelligence in software development.
  • A graduate of multiple professional programmes (Harvard University, Lodz University of Technology). I'm also a certified Microsoft Administrator and Engineer in Security.

Last Projects

1. Keycloak JWT Validator 🔗 GitHub Repo

REST API Spring Boot React Gradle Keycloak

A fullstack REST API application to decode and validate JWT tokens issued by Keycloak. Backend configured as an OAuth2 Resource Server using NimbusJwtDecoder for token signature validation.

2. GYM 🔗 GitHub Repo

Spring Boot Maven Hibernate ORM Lombok PostgreSQL Thymeleaf

A Spring Boot-based MVC web application using Hibernate ORM and PostgreSQL for managing gym member data, implementing the Builder creational design pattern for flexible object construction.

3. Fault Management System 🔗 GitHub Repo

Java EE Maven Lombok Boot Faces Oracle Database Payara Server

IT System for Managing Railway Traffic Control (RTC) System Failures on Mining Railways is a Java EE enterprise application with an MVC architecture and the Facade structural design pattern for simplified subsystem access.

GitHub Stats

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  1. keycloak-jwt-validator-springboot-react keycloak-jwt-validator-springboot-react Public

    A fullstack REST API application to decode and validate JWT tokens issued by Keycloak. Backend configured as an OAuth2 Resource Server using NimbusJwtDecoder for token signature validation.

    Java

  2. fms fms Public

    IT System for Managing Railway Traffic Control (RTC) System Failures on Mining Railways is a Java EE enterprise application with an MVC architecture and the Facade structural design pattern for sim…

    Java 2 1

  3. oauth2githubssl oauth2githubssl Public

    A Spring Boot web application configured to use OAuth 2.0 with GitHub API and self-signed SSL certificate.

    Java

  4. network network Public

    A Twitter-like social network website for making posts and following users

    Python 2

  5. capstone capstone Public

    A web application of your own with Python and JavaScript

    Python

  6. gym gym Public

    A Spring Boot-based MVC web application using Hibernate ORM and PostgreSQL for managing gym member data, implementing the Builder creational design pattern for flexible object construction.

    Java