Hi, I'm Noah Qin.

Class of 2027 Applicant. I bridge Systems Engineering with Product Design. From building robotic crawlers to iOS apps, I engineer tools that solve real-world problems.

View Projects Read Essays

Technologies I work with

Swift Python Java Rust SQL PyTorch Astro Spring Boot

Featured Projects

View All →

Project 19 Releases

Vex

A fast, multi-language version manager for macOS. Symlink-based switching, zero shim overhead, everything under ~/.vex.

#Rust #DevTools #Open Source #CLI

iOS App Not Selected

CurveStudio

An interactive playground for exploring mathematical curves, designed for the Swift Student Challenge 2026.

#Swift #SwiftUI #Math #Education #Competition

Latest Essays

Read Blog →

Swift Student Challenge — I Didn't Make It

My SSC submission wasn't selected. Here's what I think went wrong, and what I'll do differently next time.

#Swift #Reflection #Competition

The First Time Someone Paid for My Code

What freelancing taught me about validation, blind spots, and why communication is engineering.

#Freelancing #Growth #Reflection

Building a Multi-Language Version Manager from Scratch

Why I got tired of nvm, rustup, pyenv all fighting over my home directory — and decided to build Vex.

#Rust #DevTools #Open Source