dotCSS 2019

The world's largest CSS conference

December 4, 2019 Paris, France

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Full speaker lineup:

Emily Plummer

Emily Plummer

Emily is a Design Systems Engineer at GitHub. She is currently working on building an open source component library to accompany GitHub's design system, Primer. She's interested in all things JavaScript, CSS, and the intersection of the two.

Hakim El Hattab

Hakim El Hattab

Hakim is a Swedish front-end developer who loves to work on visual JavaScript experiments, animations and user interface concepts. He co-founded and is currently building, a fully featured presentation platform built on top of his open source presentation framework, reveal.js.

David Khourshid

David Khourshid

David is a Microsoft software engineer with a passion for innovative UI/UX, animations, software modeling, and cutting-edge front-end tech. He's also the creator of XState & half of the Keyframers, a weekly coding live-stream. When not traveling or coding behind a laptop keyboard, he's usually behind a piano keyboard.

Jason Pamental

Jason Pamental

Jason works with clients on typographic systems, improving brand voice, performance, and UX. An Invited Expert to the W3C Web Fonts Working Group, he has given workshops and presented at over 100 events worldwide, has consulted for nearly every major type vendor & font platform, and authored numerous articles and courses on web typography & variable fonts.

Ire Aderinokun

Ire Aderinokun

Ire is a frontend web developer and user interface designer based in Lagos, Nigeria. She is currently the co-founder of BuyCoins, a cryptocurrency exchange for Africa. Ire specialises in the core frontend technologies HTML, CSS, and JavaScript and has written over 100 articles on these topics on her blog.

Hidde de Vries

Hidde de Vries

Hidde is a front-end web developer and accessibility specialist. On his blog, he writes about all things HTML, CSS and JavaScript. For over ten years, he has been contracting with organisations like Mozilla and the Dutch government, to help them deliver sites that put users first.

Sarah Dayan

Sarah Dayan

Sarah is a Senior Software Engineer at Algolia. She primarily works with JavaScript and CSS, and created Dinero.js, a library for working with monetary values. She also advocates for methodologies such as utility-first CSS and test-driven development, and writes about it all on her blog.

Aurélien Levy

Aurélien Levy

In 2004, Aurélien was one of the first a11y testing experts in France. He is one of the authors of the french accessibility testing methodology (RGAA) and spoke at multiple conferences. Aurélien helped many administrations and private companies to integrate digital a11y inside their production and design workflow.

With our guest emcee:

Una Kravets

Una Kravets

Una is an international public speaker, technical writer, and a Developer Advocate at Google. Previously, she was the Director of Product Design at Bustle Digital Group, and built design systems at DigitalOcean and IBM Design. Una co-hosts the Toolsday developer podcast and shares her experiments in CSS through video and blog posts.

With lightning talks from:

Jean-François Garreau

Jean-François Garreau

CTO of Sfeir Nantes, GDE Web & Mozilla TechSpeaker.

Jérémie Patonnier

Jérémie Patonnier

Web Advocat at Zenika, in love with SVG.

Roman Komarov

Roman Komarov

Senior Frontend Engineer at Datadog.


We also have great speakers at dotJS on December 5th


  • Evan You

    Evan You

    Creator and lead maintainer of Vue.js

  • Charlie Gerard

    Charlie Gerard

    Front-end developer at Atlassian, Mozilla Tech Speaker & Google Developer Expert in Web Technologies

  • Igor Minar

    Igor Minar

    Angular lead and software engineer at Google.

  • Sara Vieira

    Sara Vieira

    Developer at CodeSandbox. GraphQL and Open Source enthusiast. Conference Speaker and Airport expert.

  • Vladimir Agafonkin

    Vladimir Agafonkin

    Engineer at Mapbox, creator of Leaflet, open source enthusiast and algorithms geek

  • Chris Heilmann

    Chris Heilmann

    Author of several JavaScript books. Program Manager for Open Web and Browsers at Microsoft.

  • Vlad Filippov

    Vlad Filippov

    Open source contributor and software engineer working on the Web.

  • Phil Hawksworth

    Phil Hawksworth

    Principal Developer Advocate at Netlify.

  • Bert Belder

    Bert Belder

    Early Node.js core team member, now working on Deno.

  • Adam Bradley

    Adam Bradley

    Creator of StencilJS and co-creator of Ionic Framework.

  • Daniel Ehrenberg

    Daniel Ehrenberg

    Partner at Igalia and member of TC39

  • James Long

    James Long

    Founder of Actual and creator of Prettier.

  • Tim Neutkens

    Tim Neutkens

    Co-author and lead maintainer of Next.js.

  • Kassian Wren

    Kassian Wren

    Developer Advocate at Cloudflare with a passion for music and robotics! They've written 2 books on using JS with robotics.

  • Adrià Fontcuberta

    Adrià Fontcuberta

    UI engineer at Holaluz and maintainer of Testing Library

  • Maggie Johnson-Pint

    Maggie Johnson-Pint

    Member of TC39. Senior Program Manager for Azure SDK.

  • Eduardo San Martin Morote

    Eduardo San Martin Morote

    Freelance Frontend Developer, Vue.js Core Team.

  • Jana Beck

    Jana Beck

    Dataviz specialist supporting data scientists at Stitch Fix.

  • Sven Sauleau

    Sven Sauleau

    Software engineer at Cloudflare & OSS enthusiast.

  • Asim Hussain

    Asim Hussain

    Developer, trainer, author, speaker and Cloud Advocate at Microsoft.


Main events

December 4, 2019

dotCSS 2019

dotCSS is coming back with its sister conference dotJS, in the same venue you all loved in 2018: The Dock Pullman!

This might just be the largest CSS conference, ever ;-)

Dec 5 - Dec 6, 2019

dotJS 2019

dotJS is coming back in 2019 and for the first time it will be a 2-day conference!

Day 1 (Dec 5) will be all about Frontend development (UI frameworks, browsers, ...).
Day 2 (Dec 6) will be about Backend development and JavaScript as a language (Node.js, ES2019, compilers, ...)

Side activities

Dec 2 - Dec 3, 2019

Vue.js Hardcore training

We have partnered with Hackages to provide this 2-day Vue.js HackCamp.

December 3, 2019

QueerJS meetup

This is a meetup where anyone is welcome to attend and support the speakers and the idea but all the speakers will be Queer.

December 4, 2019

Paris.js meetup dotCSS / dotJS edition

Paris.js meetup hosted by Voodoo (dotJS Platinum partner) on the evening of dotCSS, just before dotJS!

Dec 2 - Dec 4, 2019

ES Total training - French only

3 days training provided by our host Christophe Porteneuve to master 100% of ECMAScript (JavaScript)!

Discover the full schedule

Be the first to know about the next speaker announcements!


  • Speaker announcement
  • Sponsors
  • Schedule
  • News

Thanks to our lovely partners

Each year, our amazing partners help us keep tickets affordable and welcome you in their stands.
If you want to be one of them, contact us.


  • Google