Potsdam • Berlin • Germany

16-18 October 2026

Our Speakers

Sigrid Gramlinger

Sigrid Gramlinger is the founder of webgras, a Joomla-specialized web agency based near Vienna, Austria. She has been working with Joomla since its earliest 1.0.x days and has built her business exclusively around Joomla websites and online shops since 2010. As Production Department Coordinator on the Open Source Matters Board of Directors, she helps shape Joomla's future.

A regular speaker at JoomlaDays and community events across Europe and online since 2015, Sigrid has delivered keynotes and sessions on topics ranging from Joomla's roadmap and accessibility testing to eCommerce and GDPR. She co-founded the Joomla User Group Vienna and initiated the first JoomlaDay Austria, and her work has been recognized with six J!Otto Awards. When she's not on stage or debugging a template override, she helps SMEs turn their websites into tools that actually work for them — following her motto: making technology simple, transparent, and motivating.

Website
https://www.webgras.at
I'm from
Austria
Community Engagement
Production Department Coordinator & JWC Organization Team

Our Speakers

Laura Gordon

Laura Gordon

JUG (Joomla User Group) Team, JDAYUSA Coordinator

United States

Brian Teeman

Brian Teeman

Joomla and OSM Co-founder

Leeds, UK

Mario Fraune

Mario Fraune

Austria, Vienna

Maarten Blokdijk

Maarten Blokdijk

Speaker on events, organiser of JUG events

Hellevoetsluis, Netherlands

Rachel Walraven

Rachel Walraven

Teammember CMS Release Team

The Netherlands

René Kreijveld

René Kreijveld

Developer and Joomla enthusiast

The Netherlands

Yannick Gaultier

Yannick Gaultier

JoomlaDay FR organizing and video team

France

Martin Kopp

Martin Kopp

Release Manager 6.2 - Team Lead Bug Squad

Switzerland

Philip Walton

Philip Walton

Release Manager 6.0

Gravesend in Kent, England

Nadja Lamisch

Nadja Lamisch

Teamlead Social Media, JWC Organization Team

Germany

Harald Leithner

Harald Leithner

Release Manager 6.2, Security Team, JWC Organization Team

Austria

David Jardin

David Jardin

Team Leader Security Strike Team

Germany

Viviana Menzel

Viviana Menzel

Team Leader Accessibilty & Usability

Germany

Benjamin Trenkle

Benjamin Trenkle

Team Leader CMS Maintenance Team

Germany

Marc Dechèvre

Marc Dechèvre

Author of numerous presentations about Joomla

Belgium