Illustrated portrait of Ethan Yang

Hi, I’m Ethan

Computer Science and Financial Economics

@ Columbia

Based in New York City.

Experience

Engineering work spanning internal research tools, financial data automation, and real-time monitoring.

White Manna Capital Partners

Software Engineer Intern

Mar. 2026 - Sep. 2026

Oradell, NJ

  • Slashed document access time by 50% by migrating over 500+ firm documents to a full-stack internal research platform deployed on Vercel using Next.js, React, Typescript and the Google Drive API/OAuth
  • Eliminated 80% of manual data collection by building an Excel dashboard with Python and openpyxl that automatically scrapes prices and 1-/5-year trading ranges across a range of tickers from Yahoo Finance
  • Cut 2 hours/week of manual work by deploying a JavaScript program that automated earnings updates daily

HelloTech

Software Engineer Intern

Mar. 2024 - Apr. 2024

Singapore

  • Reduced manual monitoring of rates by 3+ hours per week by building a Python and Selenium web scraper that parsed live USD/SGD exchange rates from HTML using regular expressions every 60 seconds
  • Delivered alerts 24/7 within one minute using SMTP, automatically emailing users when rates cross the target

Projects

Some open-source tools, data systems, and web products I’ve built.

Proofread

OpenAI API, Next.js, React, TypeScript, Tailwind CSS, LLMs

An AI resume-tailoring platform that analyzes LaTeX resumes, surfaces ATS keyword gaps, validates generated claims, and exports an Overleaf-ready file.

B63 Transit Reliability

Go, PostgreSQL, Docker, GTFS-Realtime, Protobuf

A Go data pipeline that refreshes MTA bus-arrival predictions every 15 seconds and stores changing observations reliably in PostgreSQL.

Interview Coder

Next.js, React, TypeScript, PostgreSQL, Clerk, Pyodide

A spaced-repetition coding interview platform with pattern lessons, review queues, progress dashboards, and in-browser Python execution.

FormulaStats

Flask, Bootstrap, jQuery, JavaScript, HTML/CSS, Python

A Flask app for exploring Formula 1 driver statistics, team histories, notable races, and searchable profile pages.

See More

Tech Stack

The languages, frameworks, platforms, and AI tools I use to ship software.

Languages

  • Python
  • Java
  • JavaScript
  • TypeScript
  • SQL
  • C
  • HTML/CSS
  • Go

Frameworks & Data

  • React
  • Next.js
  • Node.js
  • Flask
  • Bootstrap
  • Tailwind CSS
  • PostgreSQL
  • Auth.js
  • Docker

Developer Tools

  • Git
  • GitHub
  • Linux
  • Vercel
  • GitHub Actions
  • REST APIs
  • CI/CD

AI

  • OpenAI API
  • Prompt Engineering
  • Agentic Workflows
  • Claude Code
  • GitHub Copilot
  • LLM Orchestration