Full-stack banking platform with atomic transactions, TOTP 2FA, and RBAC -- end-to-end ownership. Architected scalable RESTful APIs with atomic MongoDB transactions for fund-transfer flows. Implemented JWT + TOTP-based 2FA and granular RBAC for multi-role access control. Wrote TDD-driven test suites covering payment workflows and regression scenarios.

kreateIN is a comprehensive suite of AI tools designed for content creators, writers, and designers. Integrated Gemini AI for article generation, Clipdrop API for visual art, and Cloudinary GenAI for background removal. Features include AI resume reviews, community gallery, usage tracking with free/premium tiers, and a secure Clerk-based authentication system.

Deployed full-stack health platform with real-time WebRTC consultations, multi-role dashboards, and payments. Owned end-to-end design of multi-dashboard system (patient, doctor, admin) with PostgreSQL. Integrated Razorpay payments and automated email notifications via event-driven architecture. Implemented real-time WebRTC video consultations with Cloudinary storage and fallback.

Production-grade REST API with OWASP-compliant auth, JWT lifecycle, and Docker-based deployment. Engineered secure auth with bcrypt hashing, JWT refresh tokens, and injection-safe queries. Implemented rate limiting, CORS, and input sanitization per OWASP best practices. Built modular service-layer architecture with automated token cleanup and TDD coverage.

Developed a CPU scheduling simulator library with Gantt chart visualization (87%+ test coverage). Built a production-ready disk scheduling library with clean API design, and a Node.js CLI tool for file system operations and Git workflows.

A comprehensive collection of C++ solutions for LeetCode problems with a modern, responsive web interface. Designed with professional styling using EJS templating and Tailwind CSS, featuring one-click copy-to-clipboard functionality, custom syntax highlighting, and an automated solution-page generation script.