Query Optimization, Maven, Spring Boot, Multithreading, Performance Tuning, Docker, Concurrent Programming, Java Development, Scalability, Fault Tolerance, Hibernate, Sql, Git, Restful Apis, Kubernetes, Distributed Systems Design, CI CD, High-throughput applications, Cloud Platforms, Microservices Architecture, Database Schema Design, Monitoring, Low-latency systems, NoSQL Databases, Automated Deployment, OOP Design Patterns