— Java 8+, Java Core, Collections, OOP, SOLID

— Hibernate, JDBC, RDBMS (MySQL, PostgreSQL, SQLite, H2), MongoDB

— Spring Core, Spring Web, Spring Security, Spring Boot

— React, JavaScript, Servlet, JSP, Tomcat, HTML, CSS, XML, JSON, NodeJS

— JUnit, Maven, Gradle, Mockito, Kibana, ElasticSearch, RabbitMQ, Kafka

— Git, GitLab

— Windows, Linux (Fedora)

— AWS, Docker

— Knowledge of algorithms and data structures