Jenny (Yunjin) Xie

CS @ Columbia • AI + Product • Global Markets

Creating a product that matters. Currently exploring agentic systems and emerging-market.

AI Engineering Product Development Emerging Markets AI Agents EdTech APIs E-Commerce Fintech
Jenny picture

About

I'm a developer who blends AI engineering with product sense and a love for cultural storytelling. I've led cross‑functional teams and I'm currently focused on agentic AI, Edtech, E-Commerce, and Fintech.

I am a world explorer, and often connect research on contemporary culture to emerging‑market dynamics. When I'm not building, catch me in exploring the city, art, or museums!

Selected Projects

HeyPretty - AI Full Stack Makeup Tutorial Agent

Python, React, TypeScript, TailwindCSS, FastAPI, Google Gemini, Nanobanana, ElevenLabs, GCP

  • Engineered the frontend architecture for an AI-powered web app that delivers personalized makeup tutorials.
  • Integrated ElevenLabs conversational voice AI for real-time guidance and AI-generated vibe music.
  • Connected Google Gemini 2.5 Flash for deep research and NanoBanana for before-and-after image rendering.

OptiBuy - AI E-Commerce Shopping Assistant

Langchain Agent, Gemini, Next.js, TypeScript, CSS, Prisma, PostgreSQL, NextAuth.js, Recharts

  • Collaborated three team members to build a LangChain-powered AI shopping assistant that parses user queries and compares prices.
  • Engineered RESTful API endpoints and TypeScript for product search and AI chat integration.
  • Deployed a modern, responsive UI with Tailwind CSS, supporting dark/light themes and adaptable design.

AI4ALL Ignite Fellowship

Python, PyTorch, scikit-learn, Pandas, Docker

  • Selected for a 6-month accelerator focused on AI/ML, mentorship, and AI projects.
  • Building a credit card optimizer using ML pipelines and LLMs to enhance financial decision-making.
  • Conducting dataset preprocessing, feature engineering, and model evaluation while exploring AI safety.

Worldshaper-Shanghai | Dry-Lab Captain (iGEM Biotech Competition)

Technical & Strategy Leadership | Gold Medal Winner 2022

  • Led a 16-member team across technical and business functions; won Gold Medal at iGEM (Biotech Comp) 2022.
  • Publicized biotech education via articles and vlogs, raised awareness of anti-aging products.
  • Executed market validation through interviews and surveys, aligning research with real-world applications.

Professional Experience

Co-Founder — T-Link AI Question API Platform

Remote
Jun 2025 – Oct 2025
  • Collaborated with 3 co-founders to build a Flask web app for AI-generated worksheets and recommendations.
  • Implemented AI-prompt pipelines and unified request/response adapters for multiple models.
  • Scaled the business to gain 200+ total and 50 paying users.
  • Designed product decks for potential investors and users, combining technical build with GTM experimentation.

Web Development Intern — International Education Peace Volunteer (NGO)

Atlanta, GA
May 2025 – Jun 2025
  • Rebuilt the organization's website by integrating JavaScript & CSS into Wix, doubling new viewer acquisition.
  • Coordinated with design, outreach, and sponsorship teams to align technical features with organizational strategy.
  • Conducted a strategy audit across channels, optimizing stakeholder engagement and accessibility.

Education

  • Columbia University, Columbia College
    B.A. Computer Science (AI focus) • Minors: Anthropology • Class of '28 •Clubs: Columbia Girls Who Code(Recruitment Committee), Columbia Emerging Markets Society

Skills

  • • Python, Pandas, NumPy, scikit‑learn, PyTorch
  • • LLM apps, RAG, agents, prompt & eval
  • • Data pipelines, backtesting, IC/Rank‑IC
  • • Flask, JavaScript, HTML/CSS, React
  • • Product research, KPI design, GTM

Contact

Open to AI engineering & product roles, and to collaborations at the AI × Culture × Fintech frontier.