state management , S3, Kafka, Spring Boot, Multithreading, Microservices, React, Lambda, Ec2, Docker, Jest, Api Gateway, Java, Spring, Distributed Systems, Restful Apis, Kubernetes, Webpack, AWS ecosystem, Event-driven systems, Performance optimization, WebSockets, AI-assisted development tools, React hooks, Microservices architectures, Vite, Real-time data, Cloud-native architecture patterns, Modern JS, Modern frontend tooling, Cypress