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Kalaiyarasi G
@kalaiy_gopal
AI Engineer , RAG Chatbots , PDF Data Extraction , WhatsApp Bots
India
English, Tamil
About me
Hi, I'm Kalaiyarasi, an AI engineer who builds chatbots and automation that save businesses time.
I help you:
• Build a chatbot that answers questions from your own PDFs and documents (RAG)
• Extract data from PDFs and scanned files into Excel or JSON using OCR + AI
• Create a WhatsApp AI assistant for customer support
Tools I use: Python, LangChain, FAISS, FastAPI, Streamlit, Gemini / GPT / Llama, Twilio and WhatsApp Cloud API.
I explain things in simple words, deliver on time, and keep you updated at every step. Send me a message with your use case and I'll suggest the best approach.
Skills
Kalaiyarasi G
Offline •
Average response time: 1 hour
See my services
AI Chatbot Development
I will build a rag chatbot for your pdfs
Automations
I will extract data from pdfs and scans to excel or json
Portfolio
Work experience
AI and Automation Developer
CogNet • Full-time
Jan 2026 - Present • 10 mos
Built an AI platform that extracts, validates and standardizes data from PDFs and scanned documents using OCR and LLMs, and generates reports from JSON and Excel data.
AI/ML Developer
Least Action • Full-time
Aug 2025 - Dec 2025 • 4 mos
Built a WhatsApp chatbot using RAG, Meta WhatsApp Cloud API and Twilio, with document ingestion, vector search and multi-turn conversation memory. Built multi-agent AI workflows with LangGraph and PostgreSQL for goal tracking, sales follow-ups and content automation.
Data Science Intern
Gradtwin
Feb 2025 - May 2025 • 3 mos
Built an AI document assistant for multi-format file querying (PDF, DOCX, CSV, etc.). Developed the system using LangChain for chunking, Sentence Transformers and FAISS for semantic search, and Groq API (Llama3) for grounded answers. Successfully reduced document query response times from minutes to seconds.
