Andrzej Szelag
From: Poland
Location: Konin, PL
On Useme since 24 July 2024
About me
Java Developer with 5 years of experience in designing, implementing, and maintaining secure business applications to support companies and organisations, actively expanding their knowledge and skils.
Stack I work with:
- Java/Spring Boot
- JPA/Hibernate
- PostgreSQL/MongoDB
- React (for full-stack projects)
Categories
Portfolio
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.
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.
A Spring Boot web application configured to use OAuth 2.0 with GitHub API and self-signed SSL certificate.
An eBay-like e-commerce auction
A front-end for an email client that makes API calls to send and receive emails.
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.
A web application of your own with Python and JavaScript
A Spring Boot web-based application configured to use OAuth 2.0 with Google API.
A Twitter-like social network website for making posts and following users.
A Wikipedia-like online encyclopedia.