Designing and scaling a cross-product design system for 4 billion users.

Designing and scaling a cross-product design system for 4 billion users.

TL;DR

At Meta's global cross-product design system (XMDS) team, I drove design improvements to increase consistency & efficiency for 100+ Meta-owned apps, used by 4 billion users.

At Meta's global cross-product design system (XMDS) team, I drove 25+ design updates to improve visual & interaction patterns, increase consistency & efficiency for Meta-owned apps.

At Meta's global cross-product design system (XMDS) team, I drove design improvements for visual identity & interaction patterns, increasing consistency & efficiency for 100+ Meta-owned apps.

Timeline

10 weeks
June - Sept. 2025

10 weeks
Summer 2025

Approved, in experiment

In experiment

Skills

Visual design
System thinking
Interaction design
Eng handoff

Team

3 Designers
2 PM
3 Engineers
1 Data scientist
5+ Partner teams

Managers

Bethany Fong
Stephen Barros

100+

Meta-owned apps

4B+

users daily

25+

design updates

10+

core flows

100+

Meta-owned apps

4B+

users daily

25+

design updates

10+

core flows

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My Impact At A Glance

Design and scalable updates in collaboration with XFN and partner teams, my work focused on 4 aspects:

Design Across Scale

Proposing and scalling key design updates across 50+system components, to be used across 100+ apps. Balancing functinality and expression.

Improving Product Performance

Collaborating with partner teams, I helped improving product metrics for 5 core flows from a design system perspective, impacting 25+ partner teams.

Bridging Gaps Between Design & Eng.

Publishing extensive component specs and guidelines across Meta's internal system, bridging gaps between XFN, improve efficiency in collaboration and implementation.

Validating with Data/Experiment

I led the first experiment planing across design, engineering and DS team. Preparing a thorough plan with 5 design varients, to valdiate design impact on high-traffic flows.

Scaling and improving core components across mobile & desktop and light & dark themes.

Partnering with product teams, I helped improving key performance metrics for 5 high-traffic core product flows.

Partnering with product teams, I helped improving key performance metrics for 5 high-traffic core product flows.

Capturing more than 20+ engineering and design gaps with extensive spec & guidelines, published internally at Meta.

Kind Words

Meta taught me to design, to think, and to scale the smallest pixel with the greatest care. The people I met there continue to inspire me everyday, and here's what they said about me!

"

Thanks for being a prototyping and design system superhero Jen. It was so inspiring to witness!

David Hong

Senior Product Designer

Thanks for leading a thorough preparation and dedication that passed both the data and design reviews with ease! Sincere thank you for your outstanding work!

"

Qiao Lin

Data Scientist

Jen! Thanks got everything you've done here! You've completed so much in your time here, creating lasting impact through your work!

"

Stephen Barros

Staff Product Designer

"

You've contributed such high-quality design work in such a brief time! It's inspiring how quickly you ramped up to the team and the passion you had for systems thinking!

Eric Morgran

Product Manager

Jen, talking and brainstorming about components with you made me feel so alive and exited. You brought so much energy into this team and I'm forever thankful for it.

"

Manveer Chaihal

Product Manager

You've done such fantastic work during your internship - thank you for showing up with such thoughtfulness and focus.

"

Nathan Huang

Art Director

Summer ar 1 Hacker Way, Menlo Park, CA

Let's be friends!

© Jen Zhang 2026 Seattle, WA

Rain drop, drop-top;

From sketch to mobile to desktop~