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James Koster

Designer at Automattic

@jameskoster UK joined Aug 2009

jameskoster.design github.com/jameskoster Slack: @jameskoster
    Teams Design

    Bio

    Designer @ Automattic.

    Interests

    Horticulture, Espresso, Exercise, Art, Tech, Pizza

    WordPress Origin Story

    Discovered WordPress when building Quake III: Arena clan websites for friends back in the noughties.

    Badges

    CODE
    5 badges
    C Core AI Contributor '26 Core Contributor '19 Core Team '23 Plugin Developer Theme Developer

    Current Job

    Designer
    Present
    Automattic

    Recent impact

    Score weights high-impact work (commits, releases, approved translations, props) at 3x routine activity.

    Last 30 days
    39contributions
    high18
    medium21
    score75
    Last 90 days
    81contributions
    high31
    medium50
    score143
    Last 12 months
    223contributions
    high59
    medium164
    score341

    Team focus

    Across 1 team, with no team-attributable contributions in the last 365 days

    WordPress releases

    Contributed to 18 releases
    • 7.0
    • 6.9
    • 6.8
    • 6.7
    • 6.6
    • 6.5
    • 6.4
    • 6.3
    • 6.2
    • 6.1
    • 6.0
    • 5.9
    • 5.8
    • 5.7
    • 5.6
    • 5.5
    • 5.4
    • 5.3

    Time commitment

    10 hours per week of sponsored contribution time

    Contributions

    Type
    June 2026
    Jun 12 Fri · 14:12
    Core med
    Created issue #79154 in the WordPress/gutenberg repository:
    Design System: Add a dedicated Navigation component
    Jun 12 Fri · 13:56
    Core high
    Merged pull request #78816 into WordPress/gutenberg:
    Add corner radius presets to ThemeProvider
    Jun 12 Fri · 12:34
    Core high
    Merged pull request #78913 into WordPress/gutenberg:
    Add xl border radius token for page shell surfaces.
    Jun 11 Thu · 12:57
    Core high
    Merged pull request #78885 into WordPress/gutenberg:
    Popover: add open/close motion and fix close re-anchor
    Jun 10 Wed · 14:48
    Core med
    Created issue #79089 in the WordPress/gutenberg repository:
    `@wordpress/ui`: Unify the opacity (fade) transition pattern across overlay components
    Jun 10 Wed · 14:02
    Core med
    Created issue #79088 in the WordPress/gutenberg repository:
    Adopt the new `size` design tokens (`--wpds-dimension-size-*`)
    Jun 10 Wed · 10:48
    Core high
    Merged pull request #79032 into WordPress/gutenberg:
    Theme: Add Figma scopes to element size tokens
    Jun 09 Tue · 08:20
    Core med
    Submitted pull request #79032 to WordPress/gutenberg:
    Theme: Add Figma scopes to element size tokens
    Jun 08 Mon · 15:35
    Core high
    Merged pull request #76545 into WordPress/gutenberg:
    Theme package: Add element size design tokens
    Jun 08 Mon · 14:05
    Core high
    Merged pull request #78983 into WordPress/gutenberg:
    Tooltip: Use md border radius for portaled popups.

    Developer

    9 plugins

    Contributor

    3 plugins

    Themes

    2 themes

    Plugins

    2 favorites

    Themes

    1 favorite