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Dhaya333/README.md

Hi, I'm Udhaya πŸ‘‹

AI & ML Engineer Β· Chennai, India

n8n Certified

Fresh B.Tech graduate in AI & Data Science β€” I build automation systems that solve real problems. Not just prototypes β€” I've shipped workflows that handled 3200+ emails without hitting Gmail limits, automated an entire hackathon backend end-to-end, and built AI pipelines that generate and sell stock images passively. I think in systems, not scripts.


πŸ”§ What I Build

Domain What I've shipped
πŸ€– AI Agents Local RAG agent (private LLM + document retrieval)
⚑ n8n Automation 10+ production workflows across events, content, fraud & outreach
🧠 LLM Pipelines Gemini + OpenAI prompt chains for image metadata, fraud detection
πŸ“Š ML & Data Models & datasets β€” actively building

πŸ›‘οΈ Engineering Approach

Free-tier first. Every workflow above runs on free API limits. I solve rate limits with batched loops, staggered waits, and parallel chains β€” not by throwing money at the problem.

  • Error monitoring across all workflows β†’ instant Telegram + Gmail alerts
  • Google Sheets as a lightweight ops dashboard (status, logs, deduplication)
  • Modular design β€” workflows are reusable and easy to hand off

πŸ“Œ Currently

  • πŸ”­ Building a Local RAG Agent β€” private LLM + document retrieval, fully offline
  • πŸ“ Planning AI agent pipelines, ML models & LLM fine-tuning projects
  • 🀝 Open to AI automation freelance, internships & collaborations

🧰 Tech Stack

n8n Python LangChain Ollama Google Gemini OpenAI HuggingFace Raspberry Pi Arduino FAISS ChromaDB Google Workspace APIs Telegram Bot API


πŸš€ Notable Projects

🎯 TARCIN Hackathon β€” Full Event Automation (Freelance Β· Backend)

Built the entire backend automation for a company-organized hackathon.

  • AI reads payment screenshots β†’ extracts UPI transaction ID, amount, bank name
  • Duplicate UPI detection to prevent payment fraud
  • Automated email pipeline: welcome β†’ reminder β†’ event day β†’ winner announcement
  • Sent to HOD, Principal, company & participants β€” zero manual effort on event day
  • Stack: n8n Β· OpenAI Vision Β· Gmail Β· Google Sheets

πŸ“§ Startup Outreach β€” 3200+ Cold Emails, Zero Bans (Personal Β· Greendigo)

Built a rate-limit-aware email system for my startup's data collection survey.

  • Engineered send pacing + wait logic to stay within Gmail's daily limits
  • Dual-loop system: survey email β†’ 2hr gap β†’ thank you email on response
  • Telegram notifications for real-time send status monitoring
  • Stack: n8n Β· Gmail Β· Google Sheets Β· Telegram

πŸ–ΌοΈ AI Stock Image Pipeline β€” Passive Income System (Personal)

End-to-end automation to generate, enhance, and list AI stock images for sale.

  • Bulk prompt engineering via 10 parallel Gemini LLM chains (prompt β†’ 10 variations)
  • 15 parallel HuggingFace model calls for bulk image generation
  • Gemini Vision auto-generates SEO metadata (title, tags, description) per image
  • Rate-limit management: batched loops + timed waits across all free-tier APIs
  • Stack: n8n Β· Google Gemini Β· HuggingFace Β· Google Drive Β· Google Sheets

πŸ•΅οΈ Fraud Detection System (Hackathon Β· Team Project Β· Backend)

Real-time scam detection tool with Telegram + web inputs.

  • Accepts text or image input via Telegram bot or website webhook
  • LLM classifies message as SCAM / LEGIT / UNKNOWN with confidence score + reason
  • Built the full backend; team handled data collection and frontend
  • Stack: n8n Β· OpenAI Vision Β· Google Gemini Β· Telegram Β· Webhook

🎬 Faceless YouTube Automation (Personal · Built & Tested)

Fully automated video creation and upload pipeline β€” no human in the loop.

  • Reads content ideas from sheet β†’ AI generates script & caption
  • Calls video generation API β†’ polls status β†’ fetches file β†’ uploads to YouTube
  • Error logging + status tracking back to Google Sheets
  • Stack: n8n Β· OpenAI Β· YouTube API Β· Google Sheets

πŸ… Bulk Certificate Generator (Freelance Β· Cifware)

Auto-generates personalized certificates at scale.

  • Copies Google Slides template per participant β†’ replaces name/details β†’ converts to PNG
  • Generates unique QR code per certificate, cleans up temp files after
  • Status tracking per certificate in Google Sheets
  • Stack: n8n Β· Google Slides Β· Google Drive Β· QR API

"I don't just automate tasks β€” I automate outcomes."

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