Joseph Postiglione
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Design systems AI integration Tooling
Case study

UX Patterns Plugin & Library

How I turned the screens every team kept rebuilding into a shared pattern library, and a Figma plugin that makes it easy to use.

Role
UX Architect
Company
CDK Global
Status
Live org-wide
The short version
One approved source
A growing library of prefab screens, built 1:1 from Radial components.
One search away
An org-wide Figma plugin finds and inserts any pattern in seconds.
Ready for AI
Every pattern ships with a spec an AI tool can build from.
Always current
Inserted screens stay linked to the library, so fixes reach every file.
01 / The problem

The same screens, built over and over

Radial gives CDK's designers components. But products are made of screens: a record list, a sign-in flow, an edit side sheet. Every team assembled those from scratch, and every team did it a little differently.

  • Designers rebuilt the same screens. Common flows were redrawn on every project instead of reused.
  • Teams solved the same problem differently. With no shared reference, patterns drifted across 6 product suites.
  • AI tools had nothing reliable to build from. There was no approved, machine-readable source for a CDK screen.
02 / The approach

A library with rules, not a folder of screens

I owned this end to end: I chose the sources, set the rules, and reviewed and published every release, while Claude did the building in Figma and in code. The rules mattered most. A library people don't trust gets ignored.

Approved sources only

Every pattern comes from an approved CDK design. No reference, no build. Nothing is invented.

Built 1:1 from Radial

Only published Radial components and tokens, so every pattern is buildable in code.

Written for people and AI

Each pattern's spec has to pass one test: an AI given only the spec builds it correctly.

01 Source
An approved CDK design becomes the reference
02 Build
Rebuilt in Radial, with gaps logged for engineering
03 Verify
Spec written and checked against a Definition of Done
04 Release
Published to the library and plugin, in batches
03 / The library

Prefab screens, ready to use

The library launched with 16 patterns and 40 screens, from a basic layout shell to complete flows like record management and sign-in. Designers drop one in and swap in their content instead of starting from a blank canvas.

Pattern library cover Record list pattern Edit side sheet pattern Sign-in pattern
The pattern library, plus record list, edit side sheet and sign-in patterns, all built from Radial components
04 / The plugin

Every pattern, one search away

A library only helps if people use it, so I shipped Radial Patterns, a Figma plugin available to every designer in the org. It works where designers already are.

Plugin search and browse Plugin screen picker Plugin request form
Search and browse, choose screens to insert, request a new pattern
  • Find it fast. Forgiving search and filters surface the right pattern in seconds.
  • Insert a flow or one screen. Whole flows go in with one click, or pick just the screens you need.
  • Ask for what's missing. Requests go straight to the team's channel, where the work happens.
05 / Key decisions

The calls that shaped it

Insert live components, not copies

The plugin places real instances from the library. When a pattern improves, every file using it can pick up the change. Copies would go stale the day they were pasted.

Keep the plugin simple

No servers, no accounts, no tracking. Nothing to host or secure. The trade-off is that new patterns ship with plugin releases, so I release in planned batches.

Ship partial patterns, clearly labeled

I reversed my own rule of holding incomplete patterns back. Patterns waiting on a missing component now ship marked "Partial", so designers can use and react to them sooner.

Narrow the scope on purpose

An early quarterly plan was far too large. I cut it to two priorities, mobile patterns and the components they need. Fewer things, done properly.

06 / Outcome

Where things stand

The library and plugin are live for every designer at CDK. The library grows release by release and is on track to pass 30 patterns by the end of the quarter, with mobile next.

40
Screens ready to insert
30+
Patterns by end of Q4
1
Plugin, org-wide
Before After
Common screens rebuilt on every projectApproved screens inserted in seconds
Each team solved patterns its own wayOne shared, approved version of each pattern
Copies drifted from the design systemLive library components that stay current
Nothing approved for AI to build fromSpecs an AI tool can build from correctly
Next case study An AI-enhanced design system