JY Lee, product engineer

Stamp JournalBurn CDCherry Blossom WishesFav NYC DayPixel Aquarium Portfolio

Selected work

01

Stand

Workflows, interaction craft, and designing in code. How I turned a rough prototype into a guided flow.

02

Personal work

Tactile software for memories, gifts, and connection.

At Stand I turned business and user outcomes into finished products.

The business knew what it wanted; the first versions were rough. STAND helps kids start their first business, from idea to brand to launch. One example: the logo flow, as it first shipped.

01Every choice at once02Next step unclear03No animation

First I shaped the journey

Broke one dense page into 5 steps. Instead of one long form, it's 5 beat-screens, each asking a single decision at a time.

Step 2: set the dial, explained with familiar brands

Then I gave it moments of joy

A long journey needs moments of joy. I add micro-interactions so that waiting, choosing, and finishing feel less boring, and more delightful.

stand

Motion labreveal · illustration of my workflow

size160px overshoot1.75× draw760ms fill300ms sparkles20

Reconstructed from the Stand check, name-reveal and reward labs; illustrative. Inspired by DialKit.

Then I built the tools to get the feel right

I prompt an agent to build the small tools I need, then tune the interaction in the working product. That keeps design decisions close to the real task, the real motion, and the real code. The actual Stand motion lab exposed timing, overshoot, spins, visual effects, replay, presets, and copy-config controls.Three scenes reconstructed here: a task-complete check, a name-card reveal, and a reward burst — each with its own sliders, presets, and copy-config.

Small software with texture

I make small digital things that borrow from real life like collecting things, gifting, keeping little memories, and making wishes.

Most of my work ends up being about connection in some way. Between a person and a memory, a song and a friend, or a small private thought and someone you want to share it with.

Stamp Journal: a calendar page with a blue stamp maker holding a photograph

Memories you can collect

A photo diary app that looks like collecting stamps. It became an internet trend, to my surprise!queensjournal.app

324,002Visitors, all-time

498,390Page views

Burn CD: a portable CD player, a burned disc, and a retro player window

Music as a gift

A playlist app. Build a mixtape, burn it to a CD, and share the link with a friend.burn-cd.vercel.app

258,516Visitors, all-time

411,973Page views

A pixel-art aquarium that works as a portfolio

Interfaces can be places to wander

A more experimental portfolio. An aquarium where pixel fish swim around, and you can “catch” one to see my work. Built to feel like an interactive game, not a traditional resume.jeongyoon.com