I'm a Software Developer based in India who builds end-to-end web applications — focusing on solid backend architecture.

What I build: I design and build full-stack web applications using Node.js, Express, React, and databases like PostgreSQL and MongoDB. My projects go beyond simple CRUD apps—I have hands-on experience setting up microservices that communicate using Kafka, implementing API gateways with rate limiting, handling real-time features using Socket.IO, and managing data concurrency with Redis. Every project I work on is fully documented, public on GitHub, and deployed live.

Architecture & Design Values:

• Object-Oriented Architecture: Write strictly modular backend code by heavily leveraging OOP principles.
• Design Patterns: Use patterns like Singleton (for shared instances like DB connections or Kafka clients) and follow Dependency Injection for loosely coupled, testable components.
• Layered Separation of Concerns: Structure code into clear, Class-based Controllers, Service Layers(business logic), and Repository Layers(database abstraction).
• Execution over Fluff: Focus on shipping functional, complete applications over half-finished ideas, and believe in learning in public.

Current focus: System design, backend architectures, and database optimization.

Career objective: A Software Developer Fresher roles or internship where I can ship real features, learn from senior engineers, and grow into a product-minded engineer.

⚙️ Deep Architecture & Clean Patterns

High-concurrency railway booking backend engineered with decoupled microservices and explicit structural design patterns.

Key Implementations:

• 📐 Clean Architecture: Structured service layers using Dependency Injection, class-based controllers, and the Repository Pattern for a strict separation of concerns.
• 🏗️ Distributed Transactions: Coordinated multi-service data integrity across booking, payment, and inventory flows using Apache Kafka and the Saga Pattern.
• 🔒 Concurrency Controls: Prevented over-booking and race conditions on concurrent seat selections via Redis distributed locks.
• 🛡️ Resilient API Gateway: Built a single entry point managing JWT authentication, custom rate-limiting, and fault isolation via circuit breakers.
• 📊 Polyglot Storage: Isolated service data using a Database-per-Service model across 5 PostgreSQL instances via Prisma, coupled with Elasticsearch for low-latency station lookups.
• 📉 Fault Tolerance: Configured custom Kafka consumers with Dead-Letter Queues (DLQ) to isolate and handle processing failures without stopping the pipeline.

Node.js Express Kafka Redis PostgreSQL Prisma Elasticsearch Docker

🎯 Full-Stack Product Engine · v1.0 · ✅ Live in Production

Full-stack platform solving the "revision gap" faced by 1,000s of students through real-time peer custom coding contests and analytics.

Key Implementations:

• ⚡ Remote Code Execution: Integrated the Judge0 API securely to manage, execute, and score sandboxed user code submissions against dynamic test configurations.
• 🔄 Real-Time State Sync: Designed a bidirectional event management layer with Socket.io to synchronize live lobby states, ticking contest room timers, and leaderboard updates simultaneously.
• 💬 TalkTown Chat System: Engineered a decoupled, persistent communication infrastructure handling private and group message routing for live solution benchmarking.
• 🗄️ Relational Document Schemas: Modeled explicit multi-document reference relationships within MongoDB to tie profile states, problem lists, custom contests, and live room metrics together.
• 🛡️ Session Management: Implemented cookie-based security pipelines handling dual JWT access/refresh token rotation sequences alongside automated image upload flows via Cloudinary.

React Vite Node.js Express MongoDB Socket.io Judge0 Tailwind