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Sergey Biryukov

WordPress Core Contributor at Yoast

@sergeybiryukov Rostov-on-Don joined Dec 2007

sergeybiryukov.ru github.com/SergeyBiryukov Slack: @sergey
    Teams Core Meta Polyglots Support
    Languages ru_RU

    Bio

    WordPress Core Committer and plugin author, also working on Polyglots, Support, and Meta teams. Co-founder of Russian WP community.

    Interests

    Lifelong learning

    WordPress Origin Story

    I studied Applied Mathematics at the Southern Federal University (formerly Rostov State University) in Rostov-on-Don, Russia.

    I have a passion for open source, which started with contributing documentation and bug fixes for a popular file manager in 2002. While creating some websites for my university, I’ve discovered a growing web publishing software called WordPress, which quickly grabbed my attention due to its simplicity, extensibility, and an amazing community. Giving back to the community was a natural thing for me, so I’ve started translating WordPress into Russian, answering questions on support forums, and participating in core development.

    I’ve joined Yoast in July 2015, and since then I’m working on WordPress full time as a core committer and an active member of several other teams: Polyglots (which translates WordPress into 200+ languages), Support (which helps users to find answers to their questions), and Meta (which manages the WordPress.org network). I’m also a frequent speaker at WordPress conferences, called WordCamps, in Russia and Europe.

    In my spare time, I enjoy listening to music, playing guitar or keyboards, watching movies, going for a walk or a bike ride, repairing all kinds of things.

    Badges

    CODE
    10 badges
    Core Contributor '15 C Core Performance Contributor '22 C Core Performance Team '22 Core Team '14 Meta Contributor '15 Meta Team '15 Plugin Developer Plugins Team '23 Security Contributor '22 Security Team '20
    CONTENT
    3 badges
    Documentation Contributor '16 Documentation Team '16 WordPress.tv Contributor '16
    COMMUNITY
    4 badges
    bbPress Contributor '19 bbPress Team '19 B BuddyPress Contributor '19 WordCamp Speaker '19
    PRACTICE
    6 badges
    Accessibility Contributor '19 Accessibility Team '17 Support Contributor '16 Support Team '16 Test Contributor '21 Test Team '21
    POLYGLOTS
    2 badges
    Translation Contributor '15 Translation Editor '15

    Current Job

    WordPress Core Contributor
    Present
    Yoast

    Recent impact

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

    Last 30 days
    68contributions
    high68
    medium0
    score204
    Last 90 days
    218contributions
    high195
    medium23
    score608
    Last 12 months
    830contributions
    high679
    medium151
    score2188

    Team focus

    Share of contributions across teams during the last 365 days

    WordPress releases

    Contributed to 39 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
    • 5.2
    • 5.1
    • 5.0
    • 4.9
    • 4.8
    • 4.7
    • 4.6
    • 4.5
    • 4.4
    • 4.3
    • 4.2
    • 4.1
    • 4.0
    • 3.9
    • 3.8
    • 3.7
    • 3.6
    • 3.5
    • 3.4
    • 3.3
    • 3.2

    Time commitment

    10 hours per week of sponsored contribution time

    Contributions

    Type
    June 2026
    Jun 07 Sun · 22:12
    Core high
    Committed [62472] to WordPress SVN:
    Twenty Seventeen: Add missing documentation for some global variables.
    Jun 06 Sat · 23:01
    Core high
    Committed [62471] to WordPress SVN:
    Twenty Sixteen: Add missing documentation for some global variables.
    Jun 05 Fri · 22:00
    Core high
    Committed [62468] to WordPress SVN:
    Twenty Fifteen: Add missing documentation for some global variables.
    Jun 04 Thu · 22:29
    Core high
    Committed [62465] to WordPress SVN:
    Twenty Fourteen: Add missing documentation for some global variables.
    Jun 03 Wed · 22:15
    Core high
    Committed [62456] to WordPress SVN:
    Twenty Thirteen: Add missing documentation for some global variables.
    Jun 02 Tue · 17:54
    Core high
    Committed [62451] to WordPress SVN:
    Twenty Twelve: Add missing documentation for some global variables.
    Jun 01 Mon · 23:20
    Core high
    Committed [62442] to WordPress SVN:
    Twenty Eleven: Add missing documentation for some global variables.
    May 2026
    May 31 Sun · 23:13
    Core high
    Committed [62438] to WordPress SVN:
    Twenty Ten: Add missing documentation for some global variables.
    May 31 Sun · 19:19
    Core high
    Mentioned in [62437] on WordPress SVN:
    Privacy: Correct type of `WP_User_Request::$user_id` from `int` to `string`/`numeric-string`.
    May 30 Sat · 19:41
    Meta med
    Created ticket #8273 on Meta Trac:
    Core commits not counted as contributions

    Developer

    Contributor

    Plugins

    Themes

    General Translation Editor

    Русский (Russian) Translation Contributor - #ru_RU

    WordPress for Android, WordPress for iOS, Browse Happy, Forums, Get Involved, o2, P2 "Breathe", WordPress Plugin Directory, Rosetta, WordPress Theme Directory, WordCamp.org, WordPress.org, 3D Wiggle Player, Absolute Privacy, AccessPress Social Login Lite – Social Login WordPress Plugin, ACF: TablePress, Active Directory Integration, Add Meta Tags, Adminimize, AdRotate Banner Manager, Advanced Ads – Ad Manager & AdSense, Advanced Category Excluder, Advertising Manager, Affiliates Manager, Akismet Anti-spam: Spam Protection, Timely All-in-One Events Calendar, Schema – All In One Schema Rich Snippets, All-In-One Security (AIOS) – Security and Firewall, Allow Cyrillic Usernames, ALO EasyMail Newsletter, Amazon Link, WP Offload Media Lite for Amazon S3, DigitalOcean Spaces, and Google Cloud Storage, Menu Control for aMember, amr ical events lists, Annual Archive, Any Ipsum, Appointments, Appreciators WP Plugin, Author Avatars List/Block, The SEO Framework – Fast, Automated, Effortless., Advanced Automatic Updates, AVH First Defense Against Spam, bbPress, Better Google Analytics, Kadence Security – Password, Two Factor Authentication, and Brute Force Protection, Birthdays Widget, Blocks, Blogger Importer, Blogware Importer, Customize WordPress Emails and Alerts – Better Notifications for WP, Book Review Library, Broken Link Checker, BuddyPress, rtMedia for WordPress, BuddyPress and bbPress, BulletProof Security, Button Builder – Buttons X, Caldera Forms – More Than Contact Forms, Car Demon, Catch Web Tools, CBX Woo Sales Report, CBX Woo Coupon Referral Affiliate, CBX Accounting & Bookkeeping, Coming Soon Chop Chop, Charitable – Donation Plugin for WordPress – Fundraising with Recurring Donations & More, Church Admin, Church Content – Sermons, Events and More, Cimy User Extra Fields, Anti-Spam by CleanTalk. Spam Firewall & protection, CloudSearch, Co-Authors Plus, Admin Columns, Comment Guestbook, CommentPress Core, Connections Business Directory, Constant Contact for WordPress, Contact Details, Contact Form 7, Contact Manager, Content Views – Post Grid & Filter, Recent Posts, Category Posts … (Shortcode, Gutenberg Blocks, and Widgets for Elementor), Page Security & Membership, Cornerstone, Correct Audio/Video Uploads, WordPress Calls to Action, Custom Contact Forms, Custom Content Type Manager, A5 Custom Login Page, Custom Post Type Date Archives, Custom Post Type UI, Cyr-To-Lat, DaTask, Debug Bar, DeMomentSomTres Books, Disable Real MIME Check, Display Active Plugins First, Display Featured Image for Genesis, DotClear Importer, Download Monitor, Duplicator – Backups & Migration Plugin – Cloud Backups, Scheduled Backups, & More, DW Question & Answer, Dynamic Content Gallery, Dynamic Widgets, Easing Slider, Easy Appointments, Easy Contact, Easy Digital Downloads – eCommerce Payments and Subscriptions made easy, Firelight Lightbox, Easy Modal, EZP Coming Soon Page, Easy Twitter Feed Widget Plugin, eCommerce Product Catalog Plugin for WordPress, Next Order Discount for Easy Digital Downloads, EH Mortgage Calculator – Loan & Amortization Calculator, Ejabberd Account Tools, Email newsletter, Email Users, Epoch - A native Disqus alternative with a focus on speed and privacy, eShop, EU Cookie Law for GDPR/CCPA, EUCookieLaw, Event Calendar Newsletter, Event List, Events Made Easy, EWWW Image Optimizer Cloud, AVH Extended Categories Widgets, Facebook, Find Posts Using Attachment, Flamingo, Photo Gallery by FooGallery : Responsive Image Gallery, Masonry Gallery & Carousel, FooTable, Formidable Forms – Contact Form Plugin, Survey, Quiz, Payment, Calculator Form & Custom Form Builder, Gallery Images Ape, Gantry 4 Framework, GC Testimonials, GD Press Tools, GeoDirectory – WP Business Directory Plugin and Classified Listings Directory, GiveWP – Donation Plugin and Fundraising Platform, GlotPress, Google Analytics counter widget (for Google Analyticator), Gmedia Photo Gallery, GreyMatter Importer, Gutenberg, Gwolle Guestbook, Health Check & Troubleshooting, Htaccess by BestWebSoft – WordPress Website Access Control Plugin, Educator, IgniteUp – Coming Soon and Maintenance Mode, Image Carousel, Indexy, Instant Breadcrumbs, Search, Filters & Merchandising for WooCommerce, Instapress, Instagram Widget – We`re on Instagram, ITRO Popup Plugin, Jetpack – WP Security, Backup, Speed, & Growth, Jigoshop, Job Manager, Kanzu Support Desk – WordPress Helpdesk Plugin, Page Builder: KingComposer – Free Drag and Drop page builder by King-Theme, Kocuj Sitemap, Ktai Style, WordPress Landing Pages, LDD Directory Lite, WordPress Leads, LearnPress – WordPress LMS Plugin for Create and Sell Online Courses, Lightweight Social Icons, Link Library, List category posts, Live Composer – Free WordPress Website Builder, Weather Station, LiveJournal Importer, LivePress, LoftBuilder, Login Widget With Shortcode, Magic Action Box, Magic Fields, Magic Fields 2, MC4WP: Mailchimp for WordPress, MailPress, MainWP Dashboard: Self-hosted WordPress Management for Agencies, MainWP Child – Securely Connects to the MainWP Dashboard to Manage Multiple Sites, MashShare – Social Media Share Buttons, Social Share Icons, MaxButtons – Create buttons, Media Library Assistant, Members – Membership & User Role Editor Plugin, Membership 2, Menu Icons by Themeisle – Add Icons to Navigation Menus, Menubar, Microblog Poster – Auto Publish on Social Media, Minimal Coming Soon – Coming Soon Page, MiniMeta Widget, MDJM Event Management, Mollie Payments for WooCommerce, Mooberry Book Manager, More Fields, Movable Type and TypePad Importer, Artwork Theme Engine, Multilanguage by BestWebSoft – WordPress Translation Plugin and Language Switcher, MW WP Form, My Content Management, Points Management System For Gamification, Ranks, Badges, and Loyalty Rewards Program – myCred, News Announcement Scroll, Newsletter – Send awesome emails from WordPress, NewStatPress, Photo Gallery, Sliders, Proofing and Themes – NextGEN Gallery, Nictitate Lite II Toolkit, Ninja Forms – The Contact Form Builder That Grows With You, NinjaFirewall (WP Edition) – Advanced Security Plugin and Firewall, Social Login, Oasis Workflow, oik, One-Click Child Theme, OPML Importer, Optin Forms – Simple List Building Plugin for WordPress, OptionTree, Our Partners by WOWProjects, Donations via PayPal, Paytium: Mollie payment forms & donations, Perfect Brands for WooCommerce, PIKLIST – Easily Build Fields, Forms, Settings, Widgets and More., Pinit: Pinterest for WordPress, Pinterest Verify, Video Player, Plenigo, Plugin FAQ Parser, Pods – Custom Content Types and Fields, Ally – Web Accessibility & Usability, Pojo Forms, Crowdsignal Dashboard – Polls, Surveys & more, Popup4Phone, Portfolio by BestWebSoft – Work and Projects Presentation Plugin for WordPress, Post Pay Counter, Product Catalog Simple, Postman SMTP Mailer/Email Log, Posts in Sidebar, PowerPress Podcasting plugin by Blubrry, Press This, Pressbooks, PrettyLinks – Affiliate Links, Link Branding, Link Tracking, Marketing and Stripe Payments Plugin, Privilege Menu, Product Catalog for WordPress, Pronamic Google Maps, Property Hive, Qtranslate Slug, Query Monitor, Quads Ads Manager for Google AdSense, Quick Page/Post Redirect Plugin, Quiz and Survey Master (QSM) – Easy Quiz and Survey Maker, Rating-Widget: Star Review System, RDFa Breadcrumb, Reactions, Recent Posts Slider, Register Plus Redux, Reorder by Term, Responsive Column Widgets, Five Star Restaurant Reservations – WordPress Booking Plugin, RestaurantPress, Restore Post Format Icons, Restrict User Access – Ultimate Membership & Content Protection, Ringo Event Calendar, Role Based Help Notes, Role Includer, Role Scoper (Obsolete – Please install PublishPress Permissions), RSS Importer, RSVP and Event Management, Salon Booking System – Free Version, SAM Pro (Free Edition), Schema Creator by Raven, Scroll Back To Top, Scroll Triggered Boxes, Seamless Donations is Sunset, SendPress Newsletters, SEO Ultimate, Showcase - 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Knowledge Graph Social Signals SEO, WP-SpamShield, WP Store Locator, WP Super Cache, WP Supersized, WP Tab Widget, Track, Analyze & Optimize by WP Tao, Customer Support Ticket System & Helpdesk Plugin for WordPress, WP UI - Tabs, Accordions, Sliders, User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration, Worthy – VG WORT Integration für WordPress, WPCasa – Real Estate for WordPress, Comments – wpDiscuz, WPeMatico RSS Feed Fetcher, WPFront Notification Bar, WPFront User Role Editor, Google Forms, WPMktgEngine, WPMovieLibrary, Page Builder by WooRockets.com, WriteShare Writing Community Platform, WTI Like Post, xili-language, XO Event Calendar, Yandex Metrica, Custom Product Tabs for WooCommerce, YITH Essential Kit for WooCommerce #1, YITH Live Chat, YITH WooCommerce Uploads, YITH WooCommerce Advanced Reviews, YITH WooCommerce Ajax Product Filter, YITH WooCommerce Ajax Search, YITH WooCommerce Anti-Fraud, YITH WooCommerce Cart Messages, YITH WooCommerce Catalog Mode, YITH WooCommerce Compare, YITH WooCommerce Coupon Email System, YITH WooCommerce Featured Video, YITH WooCommerce Gift Cards, YITH WooCommerce Membership, YITH WooCommerce Minimum Maximum Quantity, YITH WooCommerce Order & Shipment Tracking, YITH WooCommerce PDF Invoice and Shipping List, YITH WooCommerce Product Countdown, YITH WooCommerce Recently Viewed Products, YITH Request a Quote for WooCommerce, YITH WooCommerce Review For Discounts, YITH WooCommerce Review Reminder, YITH WooCommerce Share For Discounts, YITH WooCommerce Social Login, YITH WooCommerce Surveys, YITH WooCommerce Watermark, YITH WooCommerce Wishlist, YITH WooCommerce Product Gallery & Image Zoom, Comment Experience by Progress Planner, YOP Poll, My YouTube Channel, Yummi Breadcrumbs (SubCategories Support), Zibbra, A Piece Of Cake, Aaron, Aberration Lite, AccessPress Lite, AccessPress Staple, AcmeBlog, Adamos, Adventurous, Aladdin, Aldehyde, Alexandria, Alizee, Amadeus, Amplify, Annina, Appointway, aReview, Athena, Athenea, Auberge, Awaken, BIG PIX, Billie, Biography, Bizantine, BizFlare, Black Rider, BlackBird, BlackWell, BlogMaster, BlogR, BluePrintQ Draft, BootFrame Core, Businessup, ButterBelly, Catalog Me!, Catch Adaptive, Catch Everest, Catch Kathmandu, Catch Responsive, Charity Review, Chicago, Chromatic, Coller, ColorMag, Colorway, Compass, Corporate Plus, Create, Curiosity Lite, Curtains, CW Business Lite, CW Magazine, CWP MegaResponsive, CWP-YouIT, CyberChimps, Dazzling, Delivery Lite, Digital, Discovery, Dispatch, E-Commerce, e-Shopper, Education Hub, Emmet Lite, enrichmg, Eryn, eVision Corporate, evolve, FlatOn, Follet, Formation, Freak, Gateway, Greenr, Gridalicious, Gridbox, Gridsby, Gump, Heidi, Hueman, i-max, Icon WP, Indie, Inkness, iShop, JustWrite, Katori, Kiyoshi, Kouki, Kyma, Lectern, Lens, Leslie, Libretto, Lightning, LSX, luna, m1, Maker, Mantra, Market, Match, Matrix, MaxStore, Medica Lite, Miranda, Modern Estate, Modulus, Moesia, Mog, Mustang Lite, Neuro, Ninja Shadow, Nirvana, NovelLite, Nucleare, Oblique, One Page Scroll, One Paze, Onepage, OnePress, Optimizer, Oren, Origami, Outliner, Parabola, Parallax, Pencil, Perth, Photo Perfect, PhotoMaker, Pinnacle, Pixova Lite, Plain WP, Point, Politics, Poloray, Poseidon, PressNews, Professional, ProMax, Proper Lite, ProtoPress, Pure & Simple, Quill, Radiant, raindrops, Real Estate Lite, Regalway, Regina Lite, Relativity, resi, Responsive Brix, Rethink, Ribosome, Road Fighter, Rocked, Rookie, SaleJunction, Scrawl, ScrollMe, Seller, Sensible WP, SEO, SG Window, Shamrock, Shophistic Lite, Sixteen, Sliding Door, SLRESPONSIVE, Smart Magazine, SociallyViral, Spacious, Stained Glass, Star, Start, Start Point, Store, Storefront, Studio, SuperAds Lite, SuperMag, SweetHeat, Sydney, Tarali, Tempera, Tender Spring, THBusiness, The Monday, Themia Lite, TheShop, Topcat Lite, Twenty Fifteen, Twenty Seventeen, Twenty Sixteen, Uniform, Uniq, Unite, Variant Landing Page, Veggie Lite, Venom, VertiMagazine, Virality, Virtue, Waves, WEN Corporate, West, White Xmas, WoodBerry, WP Advocate, WP Barrister, WP-Forge, WP Jurist, Zenzero, Zerif Lite, Zincy Lite, WordPress 4.1.x, WordPress 4.2.x, WordPress 4.3.x, WordPress 4.4.x, WordPress 4.5.x, WordPress 4.6.x, WordPress 4.7.x, WordPress 4.8.x, WordPress 4.9.x, WordPress 5.0.x, WordPress 5.1.x, WordPress 5.2.x, WordPress 5.3.x, WordPress 5.4.x, and WordPress 7.0.x - Development

    Français (French (France)) Translation Contributor - #fr_FR

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