Frameworks and Libraries: Hibernate, JPA, Spring boot, Spring data, Spring security, Spring data, Spring batch, gRPC, Docker, NodeJS. Platforms and Tools: AWS(S3, Lambdas, EC2, DynamoDB, RDS), JUnit, Mockito, Intellij Idea, Eclipse, Tomcat, Kaa, RabbitMQ, Lombok, Swagger, SumoLogic, Grafana. Database: SQL, Oracle, MSSQL, PostgreSQL, Hibernate, DynamoDB.