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Jonathan Guzman

Product designer in San Francisco. I design the product around how people think, and I’m curious what that becomes now that software can think.

Previously Quizlet and 1Flow YC W22 (now Blink.new). Building Phloe and Tasklet on the side.

Phloe

Side project · 2026Live

Mike Castro
Staff Product Designer at Quizlet

Jonathan joined our team eager to learn anything he could about how we work at Quizlet. In his short 10-week stint he managed to work on 3 key projects.

Worked at

  • PhloeCo-founder2026
  • QuizletProduct design intern2022
  • 1Flow YC W22 (now Blink.new)UI/UX designer, contract2022
  • RondivooFounding designer2021

Guest speaker

Flipping the script: Student-Led Panel

Figma

Playground

  • mems07-14-2026
  • Study Cockpit07-02-2026

Bookshelf

  • Shoe Dog
    Phil Knight
  • The Mom Test
    Rob Fitzpatrick
  • Thinking, Fast and Slow
    Daniel Kahneman
  • Hooked
    Nir Eyal

Let’s Get Engaged

Quizlet Intern Hackweek · 2022Live

Student on Board

Quizlet · 2022Partially shipped

In progressIn progress

Tasklet

A landing page and product UI for an agent company I’d like to work at.

Side project · 2026

Exploring code

    • iosprivate
    • landingprivate
    • appprivate
    • landingprivate

Activity

319 contributions since May

Camera roll

San Francisco Bay Area
San Francisco Bay Area
Photo 1 of 13: San Francisco Bay Area

Notes

a blog, eventually. apple notes, but on the web.

0 notes

Phloe, playable

Case study

The intro biology app I co-found, rebuilt here screen for screen in React from its SwiftUI — real type sizes, real tokens, the app’s own artwork. Everything you can tap, you can tap.

Today
the day's missions, and what's already done
Learn
the unit map — open a mission from it
You
the week in four charts

A rebuild, not the shipped binary — the real thing is Swift, and it only runs on a phone.