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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
    20contributions
    high4
    medium16
    score28
    Last 90 days
    23contributions
    high5
    medium18
    score33
    Last 12 months
    203contributions
    high59
    medium144
    score321

    Team focus

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

    WordPress releases

    Contributed to 19 releases
    • 7.1
    • 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
    October 2026
    Oct 21 Wed · 09:17
    Core med
    Submitted pull request #85269 to WordPress/gutenberg:
    Storybook: Document copy feedback for buttons and menus.
    Oct 20 Tue · 14:39
    Core med
    Created issue #85204 in the WordPress/gutenberg repository:
    Block toolbar: consolidate tools, separate formatting, and improve consistency
    Oct 19 Mon · 15:13
    Core med
    Created issue #85116 in the WordPress/gutenberg repository:
    Menu: Revealing adjacent submenus should be instant
    Oct 19 Mon · 10:56
    Core high
    Mentioned in [64499] on WordPress SVN:
    Editor: Add author support to the `wp_block` post type.
    Oct 19 Mon · 09:11
    Core med
    Submitted pull request #85073 to WordPress/gutenberg:
    Components: Align Button with the UI package and recommend the Button family
    Oct 14 Wed · 10:12
    Core high
    Merged pull request #84574 into WordPress/gutenberg:
    Popover: Use design-system tokens on the default surface.
    Oct 13 Tue · 09:40
    Core med
    Submitted pull request #84612 to WordPress/gutenberg:
    UI: Tighten item label, description line-height, and spacing
    Oct 12 Mon · 17:00
    Core med
    Submitted pull request #84574 to WordPress/gutenberg:
    Popover: Use design-system tokens on the default surface.
    Oct 12 Mon · 14:48
    Core med
    Submitted pull request #84567 to WordPress/gutenberg:
    Toolbar: Paint the floating toolbar with the Menu surface.
    Oct 06 Tue · 17:33
    Core med
    Closed issue #66403 on the WordPress/gutenberg repository:
    Update FormFileUpload

    Developer

    9 plugins

    Contributor

    3 plugins

    Themes

    2 themes

    Plugins

    2 favorites

    Themes

    1 favorite