Spring Boot, Angular, Dependency Injection, Components, Rxjs, Query Optimization, JDBC, Java, Hibernate, Kotlin, Sql, Rabbitmq, Rest Apis, Jpa, Retry mechanisms, Spring Configuration Profiles, Microservices Architecture, Reactive Forms, Execution plan analysis, Message acknowledgements, Messaging patterns, Complex query writing, Services, Transactions, Dead-letter queues, Stored Procedures, Exchanges and routing

React Native, Swift, Aws S3, Python, Mobile Application Development, Typescript, React, Javascript, Performance optimization, Database design and caching, developer tools