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Dennis Claassen

Lead Developer at Yoast

@dennisatyoast The Netherlands joined Apr 2021

www.dennisclaassen.nl github.com/d-claassen Slack: @Dennis Claassen

    Bio

    I’m a lead developer at Yoast. I’m still looking in how I can also contribute to WordPress as a developer, but I have a passion for maintainable code that I want to contribute.

    Badges

    CODE
    2 badges
    Core Contributor '22 Hosting Contributor '26
    PRACTICE
    1 badge
    Test Contributor '22

    Current Job

    Lead Developer
    Present
    Yoast

    Recent impact

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

    Last 30 days
    4contributions
    high1
    medium3
    score6
    Last 90 days
    4contributions
    high1
    medium3
    score6
    Last 12 months
    4contributions
    high1
    medium3
    score6

    WordPress releases

    Contributed to 3 releases
    • 6.2
    • 6.1
    • 6.0

    Contributions

    Type
    June 2026
    Jun 10 Wed · 10:48
    GitHub med
    Created issue #120 in the WordPress/phpunit-test-reporter repository:
    Fix broken hovercards for revisions
    Jun 04 Thu · 13:20
    GitHub high
    Pull request #400 merged into WordPress/hosting-handbook:
    Update link format for hovercard compatibility.
    Jun 04 Thu · 09:35
    GitHub med
    Submitted pull request #400 to WordPress/hosting-handbook:
    Update link format for hovercard compatibility.
    Jun 04 Thu · 09:30
    GitHub med
    Created issue #399 in the WordPress/hosting-handbook repository:
    Empty hover tooltip appears on multiple ticket links across the Server Environment…
    April 2024
    Apr 24 Wed · 12:31
    Core med
    Closed pull request #6403 on WordPress/wordpress-develop:
    Twenty Twenty-Three: Extract pagination into pattern
    Apr 18 Thu · 12:47
    Core med
    Submitted pull request #6403 to WordPress/wordpress-develop:
    Twenty Twenty-Three: Extract pagination into pattern
    January 2023
    Jan 10 Tue · 08:59
    Core high
    Mentioned in [55042] on WordPress SVN:
    Help/About: Improve comments keyboard shortcuts HelpHub links.
    November 2022
    Nov 04 Fri · 10:19
    Core med
    Submitted pull request #3563 to WordPress/wordpress-develop:
    56920 keyboard shortcuts comments link
    August 2022
    Aug 12 Fri · 09:24
    Core high
    Mentioned in [53886] on WordPress SVN:
    Formatting: Add support for Enums in `is_serialized()`.
    February 2022
    Feb 25 Fri · 13:46
    Core high
    Mentioned in [52799] on WordPress SVN:
    Code Modernization: Check the return type of `wp_parse_url()` in `wp_mail()`.