I'm Tirth Patel, a Backend Developer based in Mumbai, India.

⚡ Focused on building backend systems that handle concurrency, data consistency, and real-time communication.

I build transaction-safe REST APIs and real-time systems using Node.js, TypeScript, and PostgreSQL — with a focus on concurrency control, authentication, and scalable backend design.
My projects are containerized with Docker and deployed on AWS (EC2, RDS).

🛒 Multi-Vendor Order Management API
Handles concurrent order placement using PostgreSQL transactions and row-level locking to prevent overselling and ensure data consistency in multi-user scenarios.
Implements atomic order creation with stock validation to eliminate race conditions.

Tech: Node.js · TypeScript · PostgreSQL · JWT · RBAC · Docker · AWS
→ Live | GitHub | Docker

💬 Real-Time Chat App
Single-server real-time messaging system built using Socket.io (WebSockets). Implements Redis-based presence tracking with a 30s TTL to manage online/offline status, and limits message history (50 messages) for efficient querying and performance.
Includes JWT-based socket authentication.
Uses TTL-based presence instead of relying solely on socket disconnect events to handle unexpected client drops.
Designed as a single-server system with a clear upgrade path to horizontal scaling using Redis Pub/Sub.

Tech: Node.js · Socket.io · Redis · PostgreSQL · JWT
→ GitHub

📚 Bookstore API
REST API with authentication, role-based access, and MySQL database integration, deployed on AWS RDS.
Tech: Node.js · Express · MySQL · JWT
→ Live | GitHub

• REST API design & backend architecture
• Authentication & authorization (JWT, RBAC)
• SQL transactions & concurrency control
• Real-time systems (WebSockets, Redis)
• Cloud deployment (AWS EC2, RDS, Docker)

• Distributed systems & scaling patterns
• AWS (EC2, RDS, IAM, S3)
• Data structures for backend problem solving

📌 For detailed breakdowns, architecture, and implementation decisions:
Check out my project repositories below 👉 Full GitHub Profile README