Joon Lee

Senior QA Engineer @ Apple · 15+ years shipping mobile apps used by billions

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By the Numbers

0% Above Team Average in Bugs Found Apple
0 End Users Reached Through Apps Tested Apple
0 Increase in Test Coverage Meta
0 Smartphones Shipped to Market HTC
0 Faster Testing Through Automation Via Automation

Work Experience

Apple

Senior Quality Assurance Engineer Senior QA Engineer Jan 2019 – Present · Cupertino, CA
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Drove end-to-end quality across iOS and macOS apps including News, Stocks, Weather, and iAd; partnered with engineering to streamline bug triage and resolution, managed QA task assignments, validated builds, and uncovered critical defects that improved stability, user experience, and revenue.

Meta

Quality Assurance Analyst II Apr 2018 – Jan 2019 · New York, NY
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Ran manual and ad-hoc tests on iOS and Android apps for the Local Discovery product. Worked with PM, ENG, and EM to report weekly QA updates and served as a mini-lead in NY, acting as the channel between the 3rd party test team in India and QA managers in SF. Developed and executed software test plans, cases, and scenarios for each new feature and assigned them to testers overseas.

HTC America

Principal Software QA Engineer May 2011 – Feb 2018 · Bedminster, NJ
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Led software quality assurance on all smartphones released to Verizon and Sprint, successfully shipping over 25 smartphones in 7 years with more than 25 million units sold. Key achievements included leading the QA team on the HTC One M7 and M8, both awarded "Smartphone of the Year" at Mobile World Congress in 2013 and 2014.

LG Electronics

Software Verification Engineer Jan 2008 – May 2011 · Morristown, NJ
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Developed and executed software test plans in order to identify software problems and their causes. Reported and tracked bugs, replicated reported bugs, verified bug fixes and new functionalities, regression tested new SW releases, and supported R&D by submitting appropriate logs. Led my team in number of bugs found through black-box testing and carrier requirement testing across different OS: Android, Windows, and BREW.

Education

Georgia Institute of Technology

M.S. in Analytics Expected May 2028 · Online
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Pursuing Georgia Tech's OMSA (Online Master of Science in Analytics), ranked the #1 most affordable online graduate analytics program in the U.S. Coursework spans statistical modeling, machine learning, data visualization, and business analytics — applied directly to my work in software quality and test automation.

New Jersey Institute of Technology

B.S. in Industrial Engineering May 2007 · Newark, NJ NJ
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Studied mathematics, science, and engineering with a focus on systems thinking and problem solving. Served as student president of KCCC across 10 campuses in the NY metropolitan area, building strong leadership and communication skills.

Skills & Tools

Languages

Python Swift R JavaScript HTML/CSS Bash

Tools

Xcode Git Charles QXDM

Platforms

iOS iPadOS macOS watchOS visionOS Android

Projects

Personal Portfolio Website

Built from scratch with vanilla HTML, CSS, and JavaScript — zero frameworks or libraries. Migrated from Bootstrap 3 + jQuery to a fully custom codebase.

  • Dark mode with localStorage persistence
  • Animated stat counters using IntersectionObserver
  • Interactive career timeline with expandable details
  • Fully responsive design with mobile-first approach
HTML5 CSS3 JavaScript GitHub Pages
View Source →

Test Data Generator

Generate realistic test data and edge cases for QA testing. No API key required — runs entirely in your browser.

  • 16 data types: names, emails, phones, addresses, UUIDs, and more
  • Edge Case mode: SQL injection, XSS, unicode, boundary values
  • Export as JSON, CSV, or plain text — up to 500 records
  • Zero dependencies, 100% client-side
QA Tools JavaScript GitHub Pages
Try It → View Source →

Duck Hunt: Hand Gesture

A browser-based remake of the classic NES Duck Hunt — no light gun needed. Aim with your hand and shoot by pinching your thumb and index finger, all tracked through your webcam.

  • Real-time hand tracking via MediaPipe (runs 100% client-side)
  • 5 rounds with different birds, backgrounds, and chiptune music
  • All sprites and sound effects generated procedurally — zero external assets
  • Camera feed never leaves your device
Canvas MediaPipe Web Audio JavaScript
Play It → View Source →

Volunteer

Mango House Living Fields KCCC Compassion

Contact Me

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GitHub GitHub

Or send a message directly

× Mango House

Mango House is a children’s home in Thailand that serves orphans and children from broken families by providing food, shelter, education, and hope through the gospel. Its mission is to equip students to attend the best schools possible, with a dual focus on education and discipleship.

I first visited Mango House in 2017, where I led Vacation Bible School, taught English and math, and invested in the lives of the children. Since then, I’ve continued to support Mango House through ongoing financial contributions, prayer, and by helping equip and send short-term mission teams.

Mango House, a Beacon of Hope in Chiang Mai
× Living Fields

Living Fields is a church plant in Lynn, Massachusetts, dedicated to bringing hope and the gospel to Cambodian refugees impacted by the killing fields. Many in this community continue to face lasting effects of the Khmer Rouge era, including PTSD and struggles with substance abuse. Living Fields serves this often unreached population, walking alongside them as they hold onto the hope of a better future.

I served as team leader for three mission trips to Living Fields, where we hosted Vacation Bible School for children and supported the construction of a dormitory. We also took part in the annual Water Festival—the largest Southeast Asian festival on the East Coast—to raise awareness and share the gospel.

From Killing Fields to Living Fields
× KCCC

KCCC is a branch of the Cru movement, an interdenominational Christian parachurch organization for college students. Cru is active on 5,300 college campuses worldwide in 109 countries and has 25,000 missionaries in 191 countries. The East Coast Chapter of KCCC serves 10 campuses in the NY metropolitan area, consisting of approximately 1,000 members year in and year out.

I served as student president in 2007 and currently am sponsoring 6 full-time staff members with finances and prayer.

× Compassion International

Compassion International is a Christian humanitarian aid child sponsorship organization dedicated to the long-term development of children living in poverty around the world.

I have been sponsoring children since 2008 and currently am sponsoring 20 kids through Compassion around the world.