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Dennis Snell

Software Design Engineer at Automattic

@dmsnell Tucson, AZ, USA joined Jan 2014

fluffyandflakey.blog github.com/dmsnell Slack: @dmsnell
    Maintains Charset Formatting HTML API
    Teams Core

    Bio

    As a Code Wrangler at Automattic, Inc., I spend my days designing software. As a nomad, I own very few things and enjoy living simply. I love cooking, engineering, photography, and my faithful God, Jesus Christ.

    Interests

    I’m passionate about programming theory, engineering design, and teaching software design. If you want to meet up at a WordCamp we could spend hours into the night discussing any problem no matter how big or small and get out our laptops to explore some ideas together.

    WordPress Origin Story

    At the time I found WordPress I had been building primitive CMS systems out of Google Docs, Smarty, and FCKEditor – what a different world! Once I realized that I could have a fully-fledged website building system for free and which got better as time passed I was hooked and abandoned all of my custom website coding.

    Badges

    CODE
    4 badges
    Core Contributor '15 Core Team '20 P Playground Contributor '25 P Playground Team '25
    CONTENT
    1 badge
    Documentation Contributor '23
    COMMUNITY
    1 badge
    WordCamp Speaker '15

    Current Job

    Software Design Engineer
    Present
    Automattic

    Recent impact

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

    Last 30 days
    65contributions
    high47
    medium18
    score159
    Last 90 days
    109contributions
    high70
    medium39
    score249
    Last 12 months
    578contributions
    high386
    medium192
    score1350

    Team focus

    Share of contributions across teams during the last 365 days

    WordPress releases

    Contributed to 19 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
    • 5.3
    • 5.2
    • 5.1
    • 5.0
    • 4.7
    • 4.5
    • 4.3

    Time commitment

    40 hours per week of sponsored contribution time

    Contributions

    Type
    June 2026
    Jun 25 Thu · 22:47
    Core med
    Submitted pull request #79563 to WordPress/gutenberg:
    RTC: Accumulated fixes from fuzz testing
    Jun 25 Thu · 20:24
    Core high
    Merged pull request #79510 into WordPress/gutenberg:
    RTC: fix undo / redo breakage when plug-in with metabox is loaded
    Jun 25 Thu · 13:15
    Core high
    Mentioned in [62563] on WordPress SVN:
    HTML API: Move "any other end tag" handling to a separate method.
    Jun 25 Thu · 09:49
    Core high
    Mentioned in [62558] on WordPress SVN:
    KSES: Decode style attribute before sending to safecss_filter_attr().
    Jun 24 Wed · 17:05
    Core med
    Submitted pull request #79499 to WordPress/gutenberg:
    Performance: Follow-up fixes to prepend_to_selector() optimization.
    Jun 24 Wed · 16:51
    Meta high
    Received props from @amykamala in Slack:
    Props to @desrosj and @dmsnell for going above and beyond to maintain the Core development…
    Jun 24 Wed · 03:09
    Core med
    Submitted pull request #12292 to WordPress/wordpress-develop:
    HTML API: Reconstruct active formatting elements
    Jun 18 Thu · 17:52
    Core high
    Pushed 1 commit to WordPress/WordPress:
    Performance: avoid over-allocation in wp_is_numeric_array()
    Jun 18 Thu · 17:49
    Core med
    Closed ticket #65467 on Core Trac:
    Avoid over-allocation in wp_is_numeric_array()
    Jun 18 Thu · 17:49
    Core high
    Committed [62524] to WordPress SVN:
    Performance: avoid over-allocation in wp_is_numeric_array()