Lydia Liu

In my free time, I enjoy writing fan novels and playing video games, and my favorite video game is Cyberpunk2077. I've hidden a secret “cheating” entry to my collection somewhere on this page. you'll know it when you find it!

Lydia (Ya Qi) Liu 柳雅淇

Undergraduate Researcher
Seeking PhD / Master's positions, Fall 2027

Hi, I'm Lydia! I'm a CS + Math student at UChicago who likes building reliable backend systems just as much as I like poking holes in them. Lately I've found my home in AI safety, doing research at the SAND Lab. Now I'm on the hunt for a PhD/Master's program starting Fall 2027. Feel free to reach me out at the contacts below!

Education

University of Chicago
Bachelor of Science, Computer Science, Mathematics, and Statistics Chicago, IL

Research Experience

SAND Lab, University of Chicago
Undergraduate Researcher · advised by Ben Zhao & Heather Zheng Chicago, IL
  • Updating and extending Fawkes, an image-cloaking tool that protects individuals against unauthorized facial recognition
  • Updating and extending Glaze, a tool that protects artists' work from AI style mimicry
  • Conducting AI safety research on targeted facial transformation
  • Running Pangram red-team evaluations, probing the adversarial robustness of AI-text detection systems and analyzing model behavior under evasion strategies and distribution shift

Work Experience

Carelumi
Backend Software Engineer Intern Chicago, IL
  • Developed backend services using FastAPI to support secure ingestion and retrieval of structured healthcare data
  • Provisioned cloud infrastructure on AWS (EC2, RDS PostgreSQL, S3) to enable persistent storage and scalable service hosting
  • Implemented database access controls and query logic via PostgreSQL Row-Level Security to support multi-tenant data isolation requirements
  • Integrated an LLM API–based document processing workflow to automate validation of healthcare documents
  • Established containerized deployment and automated testing workflow using Docker and GitHub Actions CI/CD
Tiptop Technologies, Inc
Backend Developer Intern Remote
  • Stabilized backend infrastructure prior to product launch by diagnosing and resolving failures in FastAPI services
  • Designed and optimized API endpoints for asset management workflows, improving responsiveness of frontend data requests
  • Resolved concurrency issues in backend request handling by refining database access logic and constraint strategies

Projects

Satellite Constellation Planner
  • Built a scheduling engine coordinating observation tasks across satellite nodes
  • Applying stateful execution modeling and property-based testing to ensure correctness of distributed scheduling logic
ML-Driven Ad Generation Pipeline
  • Prototyped a FastAPI backend with the BLIP-3 vision-language model for an automated ad generation workflow
  • Designed a lightweight inference pipeline using FastAPI and AWS compute/storage services

Skills

Programming Languages

PythonSQLJavaScript

Backend & Web Frameworks

FastAPIFlaskNode.js

Databases & Storage

PostgreSQLMySQLDynamoDBAmazon S3

Cloud & DevOps

AWS (EC2, S3)DockerCI/CD (GitHub Actions)

Machine Learning

PyTorchHugging FaceLLM APIs

Tools

GitLinuxpytest

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