I have over 2.5 years of experience in backend development using Java 17–21, Spring Framework (Core, Boot, Data, Security), Hibernate, and Jakarta EE. I specialize in building scalable and maintainable RESTful services following software architecture principles and best practices. My experience includes working with both relational and NoSQL databases (PostgreSQL, MongoDB), and leveraging tools such as Maven, QueryDSL, Liquibase, Docker, and MapStruct. I write robust unit and integration tests with JUnit and Mockito and have set up CI/CD pipelines using GitHub Actions. I also document and test APIs using Swagger/OpenAPI, and have hands-on experience deploying and managing cloud-based applications on AWS. In team-based projects, I contributed to backend development using Spring Boot and PostgreSQL, including the implementation of a scientometric database and other internal systems. Additionally, I developed a personal multi-module system for PC configuration and selection using Java 19, MongoDB, and Selenium for automation.