Daniel Liu

Hi there! I'm Daniel. I'm currently studying computer science at Northwestern University.

Contact

daniel-a-liu at outlook dot com

GitHub

Résumé (PDF)

Education

Northwestern University Evanston, IL B.S. Computer Science 2022 - 2025

University of Wisconsin-Madison Madison, WI 2021 - 2022

Skills

Programming Languages: C++, Python, JavaScript, Ruby, SQL, Go, TypeScript, HTML, CSS, Java, C, Rust Frameworks/Libraries: LLVM, React, Vue.js, Ruby on Rails, Node.js, Express, React Native Developer Tools: Git, Neovim, VS Code, JetBrains IDEs, AWS, Linux (Debian)

About Me I'm a fourth-year student at Northwestern University pursuing a bachelor's degree in computer science. I'm particularly interested in compilers and programming languages. Outside of programming, I'm an avid runner aspiring to run a sub-5 minute mile. I'm also a fan of professional tennis, track and field, and college football and basketball.

Experience

Undergraduate Teaching Assistant Northwestern University | Evanston, IL Jan. 2025 - Present Peer mentor for CS 321: Programming Languages

Software Engineer Intern CDK Global | Hoffman Estates, IL Jun. 2024 - Aug. 2024 Full stack web application development on the Roadster team using Vue.js, Ruby on Rails, and PostgreSQL.

Projects Some things I've worked on

Screenshot of compiler competition results

Almost-C Compiler A compiler that translates a C-like language into x86-64 assembly code, built from scratch in C++. Uses advanced compilation techniques including register allocation, instruction selection, and optimizations such as constant propagation and dead-code elimination. Achieved 3rd place out of 18 participants in the end-of-quarter compiler performance competition.

DefinitelyTyped Contributions Contributed to DefinitelyTyped, a popular open-source repository that provides TypeScript type definitions for JavaScript libraries. Identified bugs and provided fixes to errors in existing type definitions.

Screenshot of output with and without CAT LLVM pass

CAT LLVM Pass An LLVM pass written in C++ that optimizes programs that use the CAT language. Reduces execution cost by eliminating CAT API calls via constant optimizations, function inlining, and loop peeling.

Strava Wx Automatically fetches weather data from OpenWeatherMap and adds it to new outdoor Strava activities. Written in Go and deployed on AWS Lambda, Amazon SQS, and Amazon DynamoDB.

Purple Hours A web application that facilitates office hour scheduling for Northwestern students and TAs. Built with React and Firebase. Used agile development practices to iterate and deliver the app with a team of 7 developers.