Sejin Jung

Product Builder

A product maker who loves learning.

With experience across planning, development, and operations, I'm good at structuring problems and turning them into products. I like to prototype new ideas quickly through small experiments and keep refining them over time.

• LinkedIn: https://www.linkedin.com/in/sejinxjung/
• X (Twitter): https://x.com/0x3den
• Figma: https://www.figma.com/@0x3den

Tudy Club

Tudy Club gets its name from (s)tudy club — designed so the overlapping "s" could be put to work, like in products.tudy.club.

This blog is built around a subway map concept. AI, Crypto, Design, Dev, Money, Notion, Product — each category is a line, and each post is a station. Open a post and you'll see a ticket-style header, like a boarding pass you'd get when arriving at a station.

Just like subway lines cross each other, learning doesn't stay within one category. Studying AI takes you into Dev; digging into Product gets tangled up with Design. Transfer stations pop up where multiple lines meet. I pictured something that keeps branching out like that.

Logging what I learn as I go and laying it all out — that's what this blog is for. A growth journal of a Gen-Z PM who wants to live a better life. Not a blog that delivers finished knowledge, but one that documents the process of learning.