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Zephyrex21/README.md
Saurabh Raj Shekhar



LinkedIn    LeetCode    Portfolio    Instagram    CodePen    Email

An answer without a source is just a belief — I build systems that show their work.


About

I build production-grade AI/ML systems and full-stack applications — not tutorials, not demos. 3rd-year B.Tech CSE (Data Science) @ NSUT Delhi, targeting SWE roles at top-tier tech and finance firms.

  • AI/ML in production — built an agentic RAG system with hybrid retrieval + LLM reranking, an in-browser data analyst agent with 5-provider LLM failover (196 passing tests), and a from-scratch ResNet-18 with live Grad-CAM running entirely client-side
  • Real-world deployment — HeatWatch India (urban heat ML system) submitted to ISRO Bharatiya Antariksh Hackathon 2026, with satellite data pipelines validated against ground truth
  • Engineering discipline over demo-ware — every major project ships with automated test suites, CI pipelines, and honest documentation of trade-offs and known limitations
  • 235+ DSA problems solved in C++ (across 3 platforms), actively building toward SDE interview readiness

If it's in this profile, it's deployed, tested, and I can walk you through every design decision behind it.


Tech Stack

Languages

Full-Stack

AI / ML

Databases, Cloud & Tools


Featured Projects

Project Stack Links
Agentic RAG Assistant

Full-stack retrieval-augmented generation system with hybrid retrieval, LLM reranking, query rewriting, and self-verification — every answer traces back to its exact source.
Node.js, React, TypeScript, Groq, Pinecone, Supabase
AI Data Analyst Agent

In-browser data analysis agent that writes and self-corrects SQL/Python against your data, with multi-provider LLM failover and zero server-side execution.
React, TypeScript, DuckDB-WASM, Pyodide
Vision Interpretability Studio

Zero-cost, in-browser tool for seeing inside a vision model — live Grad-CAM and feature visualization on a ResNet-18 trained from scratch, running entirely client-side.
React, TypeScript, ONNX Runtime Web, PyTorch
Urban Heat Mitigation

AI/ML system analyzing urban heat islands across Indian cities and optimizing cooling strategies. Built for ISRO BAH 2026.
Python, XGBoost, React
Cryptex File Sharing
Secure, token-based file sharing platform built with the MERN stack and Supabase Storage.
Node.js, Express, MongoDB, Supabase
Context Engineering Toolkit

Full context-engineering pipeline — selection, compression, summarization, and evaluation — built on a genuinely $0 infrastructure stack.
React, Node.js, Express, Tailwind CSS

View more projects on my portfolio


GitHub Stats

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  1. saurabh-portfolio saurabh-portfolio Public

    A modern React + TypeScript portfolio showcasing my projects, skills, and journey in Web Development & AI/ML

    TypeScript 3

  2. urban-heat-mitigation urban-heat-mitigation Public

    Optimizing Urban Heat Mitigation and cooling strategies via Artificial Intelligence and Machine Learning (AIML)

    Python 4

  3. agentic-rag-assistant agentic-rag-assistant Public

    Agentic RAG assistant with hybrid retrieval, LLM reranking, and verifiable citations — every answer traces back to its exact source. Node.js/Express · React · Gemini · Pinecone · Supabase

    JavaScript 2

  4. ai-data-analyst-agent ai-data-analyst-agent Public

    Ask questions about your CSV in plain English — verified SQL/Python generated by an LLM, executed entirely in your browser via DuckDB-WASM and Pyodide. Zero backend, zero cost.

    TypeScript 2

  5. dev-tools-suite dev-tools-suite Public

    30 free, client-side JWT, JSON, cryptography & encoding tools — nothing you type ever leaves your browser. React + TypeScript + Vite.

    TypeScript 3

  6. context-engineering-toolkit context-engineering-toolkit Public

    The ultimate context engineering toolkit to optimize project context, manage AI rules, and eliminate token waste for modern AI coding agents

    JavaScript 2