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22 followers · 25 following

Achievements

Achievement: QuickdrawAchievement: Pair ExtraordinaireAchievement: Pull Sharkx2Achievement: YOLO

Achievements

Achievement: QuickdrawAchievement: Pair ExtraordinaireAchievement: Pull Sharkx2Achievement: YOLO

Highlights

  • Pro

Organizations

@OpenLake @dsai-iitbhilai

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Rahul5977/README.md

Rahul Raj

AI/ML + Full-Stack Engineer  ·  Data Science & AI @ IIT Bhilai

Typing SVG

LinkedIn LeetCode Hashnode Email Profile Views


⚡ whoami

const rahul: Engineer = {
  name       : "Rahul Raj",
  institute  : "IIT Bhilai — B.Tech, Data Science & AI",
  role       : "AI Intern @ SuperLiving  ·  Maintainer @ OpenLake",
  focus      : ["AI/ML systems", "agentic RAG", "realtime & full-stack"],
  building   : ["CodeArena", "AI-Presentation", "Student-Counselor", "AI-Interviewer"],
  philosophy : "ship real products, not toy demos",
  available  : true,
};

🛠️ Tech Stack

Languages

languages

Frontend

frontend

Backend · Data

backend

AI/ML · Cloud · DevOps

ai-cloud-devops

🚀 Featured Projects

🧩 CodeArena · a competitive-programming platform, end to end

A LeetCode-style arena where people solve, submit, and compete — sandboxed multi-language code execution, live contests, curated DSA sheets, discussion, and AI code review, all in one product.

  • ⚔️ In-browser judge — Monaco editor + sandboxed execution against test cases with real verdicts
  • 🏆 Contests & leaderboards — timed rounds with per-contest and global rankings, live over WebSockets
  • 📚 Structured DSA sheets — day-by-day, phase-ordered practice tracks with progress dashboards
  • 💬 Community & AI review — discuss threads, solutions, and AI-assisted code feedback
  • 🛠️ Admin authoring — full UI to author problems, testcases, and contests
  • ☁️ Dockerized and deployed on AWS Lightsail behind Caddy

🎨 AI-Presentation · a Gamma-style AI deck generator

Type a topic, get a full, editable slide deck — an async AI pipeline that writes the content, generates the imagery, and finalizes a polished, exportable presentation.

  • 🧠 Prompt → deck — LLM-driven outline, copy, and layout generation
  • ⚙️ Multi-stage worker pipeline — Redis-backed content → image → finalize jobs, so generation scales and never blocks the UI
  • 🖼️ Live editor — resizable panels and carousels to refine slides, with PPTX export
  • 🔐 Auth, billing (Razorpay) and observability baked in
  • 🏗️ Built on TanStack Start (SSR React) with type-safe routing and data

🎓 Student-Counselor · a JEE/JoSAA counselling companion

Predict → Plan → Talk. A rank-to-seat guide for the JEE/JoSAA counselling window — engineered to sit near $0 when idle and absorb lakhs of students in minutes when a round result drops.

  • 🎯 College predictor over 11,261 official JoSAA 2024 cutoffs across 121 institutes (IITs + NITs + IIITs + GFTIs), with home-state quota applied automatically
  • 📋 "List Doctor" — a server-authoritative choice-list checker that flags the classic ordering mistakes before you lock in
  • 👥 Mentor marketplace — book paid 1:1 video calls with verified seniors
  • 🌩️ Serverless AWS (Lambda · API Gateway · DynamoDB · CloudFront · Cognito) via AWS CDK, architected to survive a 100× traffic cliff
  • 🧩 ~70 screens across student / mentor / admin, split into 9 bounded contexts

🎙️ AI-Interviewer · a voice AI mock-interview simulator

A voice-driven interviewer that runs a candidate through a real loop — Coding, Technical, and HR rounds — tailored to a job description, with questions grounded in real past interview questions, live proctoring, and a rubric scorecard.

  • 🗣️ Realtime voice — streaming STT → LLM → TTS over WebRTC (LiveKit Agents), fully swappable stages
  • 🔎 Source-grounded questions — agentic RAG (pgvector/Qdrant + PageIndex + rerank via LangGraph) pulls the questions actually asked for that company/role, then twists them harder
  • 👁️ Client-side proctoring — MediaPipe face/gaze detection + tab-focus & paste signals, streamed to an integrity timeline
  • ⚙️ Live code execution in the coding round + an LLM rubric scorecard with specific, cited feedback
  • 💡 Built cost-first: self-hosted Whisper/Piper now, premium providers later with a one-line swap
🧪 More things I've built
  • Codexa — AI-powered code-intelligence platform: repo-grounded chat & cross-file reference tracing · Next.js LangChain pgvector
  • Dynamic Code Analyser — static + dynamic analysis with actionable, CI-ready insights · Python AST FastAPI
  • CampusRide — realtime ride-sharing for IIT Bhilai with WebSocket chat · Next.js Node PostgreSQL

🏆 Achievements

🥇 Code Crusade Winner 💻 350+ LeetCode Solved 🧑‍🏫 100+ Students Mentored
IIT Bhilai Consistent problem-solver Mentor @ PW
📊 JEE Advanced AIR 5977 📈 99.3 %ile JEE Mains 🌍 Open Source Maintainer
Top engineering entrance National level OpenLake · CampusRise

📊 GitHub Stats

stats top langs
streak

“From idea to prototype to production — one shipped product at a time.”

Pinned Loading

  1. CodeArena CodeArena Public

    Leetcode style coding platform

    HTML 2