Joonseo Chang Logo.
A profile portrait of Joon.

Joonseo Chang

Video that honestly encompasses life in Seoul; a city racing to the future.

Max Fischer-esque product manager who’s always on

Max Fischer-esque product manager

who’s always on the lookout for new

projects to

the lookout for new projects to



Greetings! Thanks for dropping by! I’m Joon, a junior majoring in International Studies at Yonsei University. Before discovering product and UX, many a time I’ve felt overwhelmed by the sight of architecturally vast yet ultimately incoherent systems that gave only but the illusion of solvency.

As a self-taught product manager, I’m still struggling to find my own way, but I remain confident in the ability of collaborative design to translate complex systems into beautifully natural interactions.

Currently, I'm serving as an operations clerk at the 89th Artillery Battalion of the Republic of Korea Army, where I lead unit administration, logistics, armory and supply management, human resources, and finances for over 50 combat personnel. Please save me.

Recently, I was a product growth manager at LOVO AI (Skydeck '19), where I worked closely with the founding team to help scale their expanding suite of enterprise voiceover software used by companies like Kakao, LG, Shinhan Bank, Universal Pictures, DreamWorks, and others.

At LOVO, I was the "namer" and one of the team members behind Voice Lab, an advanced voiceover creation tool. Alpha testing happening now!

I’m also the founder of Dongari, a platform where students can pick and choose the collaboration tools they need to build customizable online communities.

You can probably find me arguing with members of my college debate society, sitting in a cafe trying to write something remotely original on Final Draft, or annoying friends with the latest dad joke I found.

LearnUs Redesign

Yonsei University’s ambitious LMS-MOOC hybrid platform led to a populist revolt by students.

Sample graphic of LearnUs case study.

Zoom for Students

The Zoom everyone knows, just optimized with student-centric features.

Sample graphic of Zoom fro Students case study.

Onboarding Page Builder

A white-label page builder for anyone to create personalized onboarding messages.

Sample graphic of Onboarding Page Builder case study.

UNdata Redesign

Making the UN’s largest public database more digestible for the average person.

Sample graphic of UNdata redesign case study.

A frictionless online tool for students to easily collaborate on group projects.

Sample graphic of case study.


I served as the president of the Yonsei Underwood Union, my university’s varsity parliamentary debate society. At the 2022 Korea Nationals, I achieved a career-high national ranking as the #2 debater in South Korea.

I worked on registration and communications as a program associate for the 41st World Universities Debating Championship hosted by Debate Korea.

I was a consultant for the D&B Consulting Group, an online tutoring agency specializing in international admissions. The core team hails from Oxford, Georgetown, Stanford, and other universities.

I led a delegation to MWC as a project manager at TwoNumber, and represented the company at the global venture investment showcase organized by KOTRA.

I previously founded a startup called Palette, a web platform that helped students and organizations discover, register for, and keep a record of their extracurricular activities.
A team comprised of SNU, Sungkyunkwan, and Yonsei student developers and designers produced an MVP, received mentorship from the 1517 Fund, and collaborated with the Yonsei Enterprise Support Foundation on a government grant proposal.

I was a communications intern at DelegatePal, the first open-source research tool for Model UN delegates. The project provided easy access to UN databanks and legislative records, as well as curated educational resources for students.

Personal Notes

I’ve had a nomadic upbringing, growing up in cities like Chicago, Seoul, Qingdao, and Bogota. So I speak 4 languages!

As a self-declared film buff, I love reading and writing screenplays 🎬. I’ve found that there’s something creatively therapeutic about the screenwriting process: it’s a chance to construct characters and dialogue that reflect one's coming of age, and ultimately illuminate a vulnerable but shared humanity that anyone can empathize with. Ask me about the screenplay I’m currently failing to write!

I enjoy playing racket sports like tennis 🎾 and table tennis 🏓. I’m an avid watcher of the ATP and WTA tours, and captained the Appenzeller table tennis team for a while.

I’m a casual online chess player. Feel free to add me on! I’d be happy to showcase my one-trick Caro Kann. Although you should know that my IQ drops by 70% whenever I play blitz or bullet.

The immortal soundtracks of Forrest Gump, The Perks of Being a Wallflower, Cowboy Bebop, The Intouchables, and Rushmore are the soundtracks to my life 🎸.