High-performance URL shortener featuring a glassmorphic user dashboard, real-time analytics, timezone-aware charts, dynamic QR code generation, client-side registry search, and active/paused link controls. Redirections are cached in Redis for sub-millisecond lookups, utilizing a write-through caching pattern.

Developed a full-stack e-commerce ecosystem consisting of a user storefront, administrative panel, and Express.js backend. Features a hands-free AI voice navigation system using the browser's native Web Speech API, Google OAuth via Firebase, dynamic multi-image uploads to Cloudinary, and secure Razorpay payment processing.

High-performance trading journal and portfolio analyzer. Offloads 100% of analytical computations directly to a PostgreSQL database using raw, optimized SQL queries without an ORM. Implemented cumulative equity curves and drawdown window functions, trigger-based P&L auto-computations, recursive CTE strategy rollups, and win-rate stored functions.

Spatial pathfinding visualizer running a compiled C++17 core pathfinding engine connected to a Node.js REST API gateway and a glassmorphic HTML5 Canvas client. Features A*, Dijkstra, BFS, and DFS path searches. Built a Redis caching layer to bypass compiled binary subprocess creation overhead, achieving a 10x speedup (<1.5ms response time).

Full-stack MERN application that generates production-ready resumes with AI-assisted content optimization. Built a scalable Express backend with modular controllers, JWT-secured routes, and Mongoose schemas for multi-resume storage. Integrated OpenAI for dynamic summary enhancement and ImageKit for background-free image processing with CDN delivery. Developed a Vite-powered React frontend featuring live template rendering, autosave, real-time customization, public resume links, and print-ready PDF export.

Full-stack SaaS that enables users to upload and query PDF documents through an interactive AI chat interface. Built with Next.js and TypeScript, it includes secure user authentication via Clerk, scalable vector search using Pinecone, and Stripe-powered subscription billing. The application processes PDF content with AWS S3 and OpenAI to generate context-aware responses, backed by a PostgreSQL database managed via Drizzle ORM and optimized React Query workflows for seamless UI state handling.

Built a real-time finance support and ticketing platform enabling seamless communication between customers and agents. Implemented a chatbot-assisted customer interface with smart responses, message persistence, file uploads, and voice input using the Web Speech API. Developed a live agent dashboard with ticket management, quick replies, analytics, and multi-tab theme synchronization powered by the BroadcastChannel API.

Backend service for a video hosting platform built with Node.js, Express, and MongoDB. Enables secure user authentication with JWT and HTTP-only cookies, scalable profile and watch history management, avatar/cover uploads via Cloudinary, and modular video upload infrastructure. Structured with controllers, middleware, and async error handling for production-ready REST APIs.