This section is open to pull requests for people with a desire to assess what was their working experience and/or interactions with me.
## Name - Company - Period
Description
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I've had the pleasure to work with Karl for the past 10 years at two different companies (Opera and Mozilla). Our professional relationship changed from being peers at both, to me becoming Karl's manager for the last four years of my Mozilla tenure. One of Karl's most admirable traits is that he has a well-defined value system for the Open Web, Open Source, and Community. I've been lucky to observe his tireless efforts on multi-year problems to make progress in these areas. Karl is also not one to shy away from giving useful feedback (even if it's uncomfortable to receive), and has demonstrated the ability to receive and act on feedback with humility. Technically, Karl is razor sharp. I will especially miss his careful code reviews—I always managed to learn something new about Python, CSS, HTML, or code architecture from them. I would consider it a privilege to work with Karl again in the future, and am happy to serve as a professional reference.
Karl worked at W3C from 2000-2009. During his latter years he worked with me in the Communications Team. He had a significant impact on improving our communications and relations with developers, and contributed to messaging, design, and improving user experiences with our Web site. To this day, I consult with Karl on topics of developer relations and getting an insider view of what's happening on the Web.
Rudy Rigot - Managing Director of the start-up Steerious, founding member of the Sud Web conferences
Although i've never worked directly with Karl, we've been on common conference projects multiple times, and i've been lucky enough to witness and enjoy his aura and natural intellectual authority on the French-speaking web-makers' community. People who naturally express a superior understanding of the web and whom, at the same time, are able to spread it in a highly understandable fashion are pretty rare, and there is no question that Karl is one of them. His ability to have earned the highest respect of such a large community is proof of his abilities with web science as well as with people, and there is no doubt it is an honor he deserves entirely.
I first met Karl about a decade ago (sigh) on IRC in the #openweb room, he was already helping young web developers to understand and embrace the Web, one link at a time. He was — and still is! — one of the most valuable people of the room to learn new things and be inspired. A couple of years later, digging into the Semantic Web, I (re)discovered his blog as a major resource for the French community and started to find out the hedonist guy behind the URI. I finally met Karl in person a few times around the globe these last years (Paris, Montréal, Tokyo) and it was always a real pleasure to chat with, both about technology and life.
By hiring Karl, not only you'll benefit from his experience and skills but the most valuable part of his work for your company will be invisible, hardly quantifiable: his curiosity and humanity.
I met Karl in 2006 when we founded the Paris Web conference and was struck both by the amount of knowledge he has and by how easy he makes it sound when he explains complicated concepts to the layman. From then on, I've seen how generous and open to people he is.
He can take criticism and is always available to suggest solutions. Great team player and has an interesting, holistic outlook on things.
One does not usually say that in a recommendation but we're lucky, the few of us who met him.