MediaWiki Engineering Group

MediaWiki Engineering is a group within the Product and Technology department of the Wikimedia Foundation. The group commenced its work in July 2023. Director of Product for MediaWiki is Birgit Müller. The Director of Engineering is Ilan Berker.

Wikimedia Foundation projects MediaWiki Engineering Group: Product and Technology Start: 2023-07-01 Team members:   Timo Tijhof, Subramanya Sastry, Daniel Kinzler, Moriel Schottlender, Cormac Parle Core Platform Team API Platform Team Content Platform Team Media Platform Team Management: Birgit Müller, Ilan Berker ← Platform Engineering Team

MediaWiki Engineering consists of 4 teams:

• Core Platform Team
• API Platform Team
• Content Platform Team
• Media Platform Team

The group's principal engineers are Timo Tijhof, Subramanya Sastry, Moriel Schottlender, Daniel Kinzler and Cormac Parle.

Scope

We are the stewards of the platform that powers Wikipedia and its sister projects. This includes MediaWiki core, selected services and extensions in Wikimedia production that we consider to be core to the platform. Extensions or platform components that are in the realm of more specialized teams are commonly maintained by the respective teams (examples: Visual Editor -> Editing team; Watchlist -> Moderator Tools). You can learn more about what parts our group of teams own via the Maintainers page.

If you need our help with something, please follow our intake process here.

Priorities

Our time is split between

• WMF annual plan priorities
• Maintenance & other routine work (example: MediaWiki releases)
• Consultancy & code review

Related annual plan objectives

July 2026 - June 2027

• Scalable System for Responsible Reuse (Protect our Projects 3)
• Strengthening & Risk Mitigation of the Platform (Build Speed and Resilience 6)

July 2025 - June 2026

• Responsible Use of Infrastructure: Establish sustainable pathways for content reuse (Wiki Experiences 5)
• Accelerate Path to Product Outcomes: Simplify developer workflows & reduce platform and infrastructure risks (Wiki Experiences 6)

July 2024 - June 2025

• Knowledge Platform: Evolve the MediaWiki platform and its interfaces to better meet Wikipedia's core needs (Wiki Experiences 5)

July 2023 - June 2024

• Knowledge Platform: Increase collaboration and efficiency among software developers by improving the development process for MediaWiki (Wiki Experiences 3)

More information

• See wikitech:MediaWiki_Engineering for a number of guides and developer tools that the group takes care of and information about how to contact each team.
• See MediaWiki Product Insights for more information about product/technical research and selected annual plan priorities.
• See Wikimedia's Diff blog for technical blog posts related to our work. Examples:
  • Quo Vadis, Crawlers? Progress and What's Next on Safeguarding our Infrastructure (2026)
  • Unifying Mobile and Desktop Domains (2025)
  • API as a Product: Investing in the Current and Next Generation of Technical Contributors (2025)
• See wikitech-l for announcements (and Tech News, when appropriate)