Daisy · Portfolio

Hi, I’m Daisy (Yitong) Pei 👋

AI Enthusiastic | Software Engineer | Automation Test Analyst
I build AI-powered applications and GenAI features, integrating automation testing to deliver reliable, production-ready solutions.
React
JavaScript
Playwright
Node.js
RAG/LLM

About

I am a result-driven Full Stack & AI Engineer with a Master’s in AI and a Bachelor’s in Computer Science, experienced in delivering AI-powered applications, automation testing frameworks, and scalable web/mobile solutions. Skilled in LLMs, and RAG to digitise workflows, reduce manual effort, and enhance user experience, with strong skills in Agile/DevOps, stakeholder communication, and cross-functional collaboration.
LocationMelbourne, Australia
FocusSoftware Development, Playwright Automation Testing, LLM, RAG
EducationBSc Computer Science at the University of Melbourne, M.Sc AI at the Nanyang Technological University Singapore

Highlights

  • Delivered AI-powered applications including a PDF Q&A chatbot (RAG + OpenAI + FAISS) that reduced document search time by 70%.
  • Developed RAG-based health report systems integrating fine-tuned models into chatbot interfaces for donor queries.
  • Built and maintained automated regression and end-to-end Playwright test suites, integrated with CI/CD pipelines to boost release quality.
  • Hands-on with full-stack delivery (React, React Native, Node.js, Flask, FastAPI) and AI/ML frameworks (RAG, LangChain, LLM integration, vector databases).
  • Proven ability to mentor junior analysts, lead workshops on Agile/DevOps practices in Unimelb, and translate AI models into user-friendly products.

Projects

Total Projects

8

AI Projects

5

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