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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
    13contributions
    high2
    medium11
    score17
    Last 90 days
    14contributions
    high3
    medium11
    score20
    Last 12 months
    233contributions
    high59
    medium174
    score351

    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 06 Tue · 17:33
    Core med
    Closed issue #66403 on the WordPress/gutenberg repository:
    Update FormFileUpload
    Oct 06 Tue · 14:12
    Core high
    Pull request #84028 merged into WordPress/gutenberg:
    Menu: Tighten spacing, use 16px prefix icons, and cap width at 320px
    Oct 06 Tue · 09:30
    Core med
    Submitted pull request #84105 to WordPress/gutenberg:
    Icons: Scale artwork to better fill the 24×24 canvas
    Oct 05 Mon · 15:09
    Core med
    Submitted pull request #84084 to WordPress/gutenberg:
    Extensible Site Editor: Explore a "browse mode" home that lets users edit…
    Oct 05 Mon · 09:40
    Core med
    Closed issue #53052 on the WordPress/gutenberg repository:
    Allow large interactive areas
    Oct 02 Fri · 13:31
    Core med
    Submitted pull request #84028 to WordPress/gutenberg:
    Menu: Tighten spacing, use 16px prefix icons, and cap width at 320px
    Oct 02 Fri · 11:05
    Core high
    Merged pull request #83993 into WordPress/gutenberg:
    Menu: Align group labels and separators with indented item labels.
    Oct 01 Thu · 14:50
    Core med
    Submitted pull request #83993 to WordPress/gutenberg:
    Menu: Align group labels and separators with indented item labels.
    September 2026
    Sep 28 Mon · 13:30
    Core med
    Closed issue #65801 on the WordPress/gutenberg repository:
    New component: ListboxControl
    Sep 28 Mon · 09:41
    Core med
    Closed issue #60175 on the WordPress/gutenberg repository:
    Add template modal dialog: labeling of some TemplateListItems is far from ideal

    Developer

    9 plugins

    Contributor

    3 plugins

    Themes

    2 themes

    Plugins

    2 favorites

    Themes

    1 favorite