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Nitesh-lng/README.md

Nitesh Kumar 👋

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🧭 About Me

I'm an AI Engineer & Data Scientist with 3.5+ years of experience building production-grade AI systems — LLM-powered agents, scalable RAG pipelines, and custom transformer-based NLP models. I write my own code end-to-end, from FastAPI backends to LangGraph agent graphs to deployment.

  • 🔭 Currently building — SattvikBhojnam, a full-stack cloud-kitchen platform, plus its dedicated 6-agent AI microservice
  • 🌱 Learning — advanced LangGraph patterns, tools/function-calling, and memory persistence
  • 💬 Ask me about — LLM agents, RAG systems, applied NLP, FastAPI
  • ⚡ Off-hours — maintaining a daily DSA streak on NeetCode (Python)
  • 📫 Reach me — email / LinkedIn above

🚀 Featured Projects

🌟 Flagship

🍲 SattvikBhojnam — Full-Stack Cloud Kitchen Platform

Production platform for a premium sattvic cloud kitchen. FastAPI + PostgreSQL backend with Redis + Celery for async workflows, Next.js 14 frontend, live kitchen streaming, OTP auth, and full order + delivery management.

FastAPI PostgreSQL Redis Celery Next.js

🔗 sattvikbhojnam.com · Backend · Frontend

🤖 SattvikBot — Agentic AI Microservice

Standalone LLM microservice powering the platform. 6-agent LangGraph supervisor–specialist system (Router, Menu, Order, Schedule, Seva, General) with GPT-4o / GPT-4o-mini tiered routing, FAISS RAG, a Redis + PostgreSQL two-tier memory layer, and SSE streaming.

LangGraph OpenAI FAISS Redis SSE

🔗 sattvikbot-ai-service

💬 PromptManagement-Chatbot

Multi-agent support bot with a supervisor router + 4 specialist agents, a versioned prompt registry, and MessagesPlaceholder-based conversational memory. A clean demonstration of production prompt management with LangChain.

LangChain Python License

🔗 github.com/Nitesh-lng/PromptManagement-Chatbot

📦 More Projects

  • LangGraph AI Agent — Multi-LLM agent with tool use & live web search. LangGraph · Groq · OpenAI · Tavily → repo
  • RAG-PDF-DeepSeek — Document-based RAG pipeline. LangChain · FAISS · DeepSeek → repo
  • Fine_Tuning_PyTorch — Fine-tuning experiments in pure PyTorch (DistilBERT, LSTM) + a transformer built from scratch. PyTorch · HuggingFace → repo

🛠️ Tech Stack

Languages   Python TypeScript SQL

LLM & Agents   LangChain LangGraph OpenAI Groq FAISS

ML & Data   PyTorch TensorFlow Hugging Face scikit-learn NumPy Pandas

Backend   FastAPI PostgreSQL Redis Celery

Frontend   Next.js Tailwind shadcn/ui

DevOps & Cloud   Docker Git AWS

📊 GitHub Stats

🔥 Contribution Streak

📈 Activity Graph

📫 Connect

Building AI agents that think, reason, and deliver at scale.

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  1. financial-ai-playground financial-ai-playground Public

    An AI-powered system using Groq for model inference and Phi framework. It integrates YFinance for financial data (stock prices, analyst recommendations) and DuckDuckGo for web research. Built with …

    Python 2

  2. langgraph-ai-agent langgraph-ai-agent Public

    LangGraph-based AI chatbot with FastAPI backend, Streamlit frontend, and optional web search.

    Python 1

  3. pharma-chat-intelligence pharma-chat-intelligence Public

    💊 An intelligent pharmacy-focused chatbot using LangChain, FAISS, and Mistral-7B to answer medical and drug-related questions from custom PDF documents. Built with Streamlit and Hugging Face.

    Python 1

  4. RAG-PDF-DeepSeek RAG-PDF-DeepSeek Public

    A Streamlit-based Retrieval-Augmented Generation (RAG) application using DeepSeek, FAISS, and LangChain to answer natural language questions from uploaded PDF documents.

    Python 3

  5. PromptManagement-Chatbot PromptManagement-Chatbot Public

    A mini e-commerce chatbot built with LangChain/LangGraph, featuring a comprehensive prompt management system.

    Python 1

  6. llm-prompt-design-lab llm-prompt-design-lab Public

    A hands-on project demonstrating prompt design and usage techniques for large language models (LLMs) using LangChain, Groq (LLaMA 4), and Streamlit. Includes examples of structured prompts, dynamic…

    Python 2