Since February 2014 I am a senior researcher at Alcatel-Lucent Bell Labs. Prior to that I was a professor of Computer Science at the Software Languages Lab of the Vrije Universiteit Brussel, and a post-doc researcher of the Flanders Research Foundation. In 2008, I completed my doctoral dissertation on advanced programming language support for mobile ad hoc networks. I am co-designer of the AmbientTalk programming language. Since 2010 I have contributed to the ECMAScript (aka Javascript) standardization process, in particular, together with Mark S. Miller I designed the ECMAScript 2015 Proxy API.