Java (OOP,Multithreading, Collections)

Spring (Cloud, MVC, Boot, Data JPA, Security, AOP)

MySQL / PostgreSQL / MongoDB

Hibernate / JDBC

RabbitMQ / Kafka

JUnit / Mockito

TDD / BDD

Keycloak

Docker

Kubernetes / Helm

AWS / GCP

CI / CD

Git

SOLID

Maven / Gradle

HTML

CSS