01Retrieval-augmented generation
Medical RAG Chatbot
A production-style RAG system that answers domain questions from documents using LangChain, Pinecone, and OpenAI.
- Python
- LangChain
- Pinecone
- OpenAI
- Flask
- Docker
- GCP
Available for remote junior / entry-level roles
Hi, I'm Velu Murugan.
I build AI automation daily with n8n: LLM-driven workflows, API integrations, OpenAI-powered tools.

Santa Rosa City, Laguna, Philippines
Working remotely worldwide
My focus
n8n workflowsLLM integrationsDocument retrieval
01 / Selected projects
Four projects across AI, automation, and testing. Explore the implementation on GitHub.
01Retrieval-augmented generation
A production-style RAG system that answers domain questions from documents using LangChain, Pinecone, and OpenAI.
02LLM-powered application
A personal finance tracker with AI chat expense entry. Log spending through conversation, with Ollama or OpenAI powering the chat.
03n8n workflow automation
An n8n and OpenAI workflow that reads schedule files and generates employee schedules, automating a repetitive HR task.
04Application testing
A TypeScript dashboard for household bills, with automated end-to-end tests in Playwright to check application flows.
02 / Toolkit
n8n and Python at the core. The APIs, data, and deployment tools to connect the pieces.
03 / Background
Science taught me to investigate. Teaching taught me to explain. I bring both to building AI tools and working with a team.
2025 - Present
Independent learning and development
Building n8n workflows, LLM integrations, and document-based AI tools. Explore the code in my selected projects.
Jul 2024 - Apr 2025
Maranatha Christian Academy, Cabuyao
Taught Science, Math, and English for Grades 4-12. Planned lessons and tracked student progress through structured assessments.
Oct 2023 - Dec 2023
Ago General Hospital, Legazpi City
Supported sample collection and diagnostic workflows, with careful documentation and data recording.
Oct 2021 - Aug 2024
Ago Medical and Educational Center
88%. A foundation in scientific research, structured observation, and data analysis.
2025
Deloitte, Google, and Google Cloud
Data Analytics and Visualization (Forage), Google Analytics (Skillshop), and Prompt Design in Vertex AI.
04 / Resume
My experience, projects, and education. Updated for 2026.
05 / Get in touch
Open to remote AI engineer and automation roles on collaborative teams.
Seeking junior and entry-level opportunities.
Email Velu