Design, develop, and maintain enterprise-grade backend applications using Java 8/11/17/21+ 

Build scalable microservices using Spring Boot, Spring Cloud, Spring MVC 

Develop robust RESTful APIs and GraphQL APIs following industry best practices 

Design and implement microservices architecture with proper service decomposition, API Gateway, Service Registry, Circuit Breaker patterns 

Implement Spring Cloud components — Eureka, Zuul/Spring Cloud Gateway, Config Server, Ribbon, Hystrix/Resilience4j, Sleuth, Zipkin 

Write clean, modular, and well-documented code following SOLID principles, Design Patterns, and Clean Code practices 

Implement event-driven architecture using Apache Kafka, RabbitMQ, ActiveMQ, AWS SQS/SNS 

Design and optimize database schemas for both SQL (PostgreSQL, MySQL, Oracle, SQL Server) and NoSQL (MongoDB, Cassandra, DynamoDB, Redis) databases 

Implement ORM using Hiberna...