Java Backend Developer with 3 years of production experience building and optimizing backend systems at Tata Consultancy Services, working on BANCS — a 20-year-old enterprise insurance platform managing end-to-end workflows from policy issuance to claims.

I design RESTful APIs, optimize legacy PostgreSQL/PL/SQL queries, and modernize Java codebases following SOLID principles and clean code standards. Outside of work, I build production-grade systems from scratch to go deeper than day-to-day work allows.

Languages     →  Java 21 (Core Java, OOP, Collections, Generics, Multithreading, JVM)
                 JavaScript · TypeScript

Backend       →  Spring Boot · Spring MVC · Spring Security · Spring Data JPA
                 Hibernate/JPA · Maven · Flyway

Databases     →  PostgreSQL · MySQL · MongoDB · Redis (GEO, Caching) · PL/SQL

APIs & Auth   →  RESTful APIs · WebSocket/STOMP · JWT · OAuth2

Testing       →  JUnit · Mockito · Postman

Frontend      →  Next.js 14 · ReactJS · Zustand · Tailwind CSS · TypeScript

DevOps        →  Docker · Git · GitHub · CI/CD concepts

Architecture  →  Microservices · Design Patterns · System Design · Agile/Scrum

Java 21 Spring Boot 3.3.5 PostgreSQL 16 Redis 7 WebSocket/STOMP JWT Flyway Next.js 14

A Kafka-ready modular monolith built from scratch with a planned microservices split.

• Redis GEO dispatch — sub-second nearest-driver matching via geospatial indexing
• Ride state machine — REQUESTED → DRIVER_ASSIGNED → DRIVER_ARRIVED → ONGOING → COMPLETED/CANCELLED
• JWT rotation — SHA-256 hashed refresh tokens + Spring Security role-based access
• WebSocket/STOMP pipeline — async-safe notifications via Spring ApplicationEvents + RideSnapshot pattern (resolves LazyInitializationException across async threads)
• Kafka-ready DTOs — RideSnapshot payloads designed for clean event-driven migration
• Full-stack: Next.js 14 frontend with Zustand, STOMP hook, JWT auto-injection, route protection

Next.js ReactJS MongoDB Prisma ORM NextAuth JWT

• JWT session management via NextAuth with protected route middleware
• RESTful API endpoints for tweets, follows, likes, and feed aggregation
• Real-time data sync with useSWR — automatic revalidation, no manual polling
• Relational-style MongoDB schema managed via Prisma ORM

Node.js Express PostgreSQL Sequelize ORM Amazon S3 JWT

• JWT authentication with role-aware access control
• Amazon S3 integration with pre-signed URLs and multipart upload support
• Normalized PostgreSQL schema with Sequelize ORM migrations
• Full RESTful API surface for user, folder, and file management

ReactJS Next.js TypeScript Tailwind CSS NextAuth Zustand ChartJS

• Google OAuth2 via NextAuth with session persistence
• Interactive charts (line, bar, pie) consuming a custom REST API via Axios
• Zustand global state management with clean UI/state/data-fetching separation

350+ problems solved across LeetCode, Coding Ninjas, GeeksforGeeks, and Codeforces covering arrays · strings · dynamic programming · linked lists · binary trees · graphs · sliding window