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cws31/README.md

Hi 👋, I'm Sonu Kumar

Java Backend Developer | AI Engineer in Progress

Building scalable backend systems, microservices and AI-powered applications.


About Me

  • Java Backend Developer focused on Spring Boot
  • Interested in Microservices & Distributed Systems
  • Working with Kafka & Event-Driven Architecture
  • Exploring AI, LLMs, RAG & LangChain4j
  • Building secure applications with Spring Security & JWT
  • Always learning and building real-world projects

Tech Stack

Backend: Java • Spring Boot • Spring Cloud • REST APIs • JPA • Hibernate

Microservices: Gateway • Eureka • OpenFeign • Kafka • Resilience4j

Security: Spring Security • JWT • RBAC

AI: LLMs • RAG • LangChain4j • MCP • Vector Databases


Featured Projects

🔹 Smart Emergency Response Platform
Microservices-based system combining Spring Boot, Kafka and AI.

🔹 Workout Tracker API
Secure REST API built with Spring Boot, JWT and JPA.

🔹 Smart Habit Tracker
Full-stack application using Spring Boot and React.


Achievements

1st Place — University VCode Hackathon
220+ LeetCode Problems
HackStack Hackathon — Consolation Prize


Connect With Me


☕ Java + 🏗️ Microservices + 🤖 AI

Pinned Loading

  1. wallet-and-withdraw-system wallet-and-withdraw-system Public

    Secure, backend-driven rewards wallet and withdrawal system built with Spring Boot, MySQL, JWT authentication, and JPA. Implements multi-currency wallets, double-entry-style transaction ledgering, …

    Java 1