Stéphane Bortzmeyer
Stéphane Bortzmeyer works at AFNIC, the domain name registry for .fr. So, he knows a bit about the DNS, and talked about it several times at FOSDEM. He also has a blog (almost entirely in French) https://www.bortzmeyer.org/ and wrote a book about the relationship between Internet infrastructure and politics https://cyberstructure.fr/
The speaker also wrote three RFCs about DNS, RFC 7626 (DNS privacy considerations), 7816 (QNAME minimization for privacy) and 8020 (enforce the tree structure of the domain names). When he is not reading RFCs or technical papers, he programs with Python.