Full-Stack Developer and B.Tech IT student at IIIT Una, consistently building and shipping real-world projects across the MERN stack, GenAI, and distributed systems.

• 💼 Full Stack Intern @ ModelSuite AI — production backend with Node.js, MongoDB, Redis, Socket.io, Gemini AI, RBAC, JWT, 13+ cron jobs, and CI/CD pipelines
• 🔭 Built CareerCraft AI (RAG-based SaaS) and MindClash (real-time debate platform — Socket.io, Redis, WebRTC)
• 🧠 Exploring RAG pipelines, vector search, semantic chunking & multi-modal AI
• 🏆 Top 50 of 5,000+ teams — National Road Safety Hackathon (MoRTH)
• 🏆 Top 4,000 of 260,000 — Adobe Hackathon Round 2 Qualifier
• 💡 550+ DSA problems solved on LeetCode · 500+ GitHub commits across repositories
• 📫 arpitchhabra.work@gmail.com

MongoDB · Express.js · React.js · Node.js · Socket.io · Redis · Gemini API · WebRTC · Tailwind CSS

A large-scale real-time debate platform supporting 1v1, team, and battle-royale modes. Engineered WebSocket rooms for isolated high-frequency streams with sub-second latency. Integrated Gemini AI as an autonomous judge for scoring, fact-checking, and moderation. Built anonymous alias system, XP/ELO engine, spectator mode, and atomic MongoDB locks to prevent race conditions.

MongoDB · Express.js · React.js · Llama-3.3 · Jina AI · RAG · Stripe · Brevo · Framer Motion

A fully deployed SaaS platform with a custom RAG pipeline (Jina AI + MongoDB Vector Search + Llama 3.3-70b) for precise document Q&A with cosine similarity retrieval and chunk-level citation tracking. Features AI mock interviews, 3D animated flashcard decks, quiz generation, Stripe webhook subscriptions (Free/Pro/Enterprise), and a gamification engine with XP, streaks, and global leaderboard.

Node.js · Express.js · MongoDB · Mongoose · JWT · Multer · Cloudinary

High-performance REST backend across 10+ modules — video uploads, playlists, comments, subscriptions, and channel management. Optimized MongoDB aggregation pipelines with 40% reliability boost. Dual-token JWT auth with bcrypt. Multer + Cloudinary integration cutting upload time by 30%.

Languages

Frontend

Backend & Databases

DevOps & Tools

AI & SaaS

GenAI & RAG