Kilian Valkhof

Kilian Valkhof

Kilian is a front-end developer with over 20 years of experience that switched from building websites to building apps to build websites with. He is interested in modern web development, desktop app development and new technologies, and regularly speaks about topics like responsive websites, design systems and Electron. Kilian is a frequent open source contributor.

Montreal 2026 sessions

INTL: The best browser API you're not using

English session - Intermediate

Browsers are shipping a massive API: INTL, which is chock-full of features most developer still do an NPM install for. The INTL API will save you time, effort and frustration.

Learn about all the wonderful built-in ways to deal with date formatting, lists, currencies, items and sentences in any language you can throw at the browser, without shipping literal megabytes of packages to your user.

Programming principles for front-end developers

English session - Intermediate

Frontend development has evolved from building pages with HTML to building complex applications using the web platform, yet many developers miss out on powerful programming principles that can help improve their code quality, productivity and effectiveness.
As someone who had to find and learn these maxims in the wild to discover how useful they are, this is the talk I wish I had when I just started out: pragmatic, useful and directly applicable

Montreal 2025 sessions