I've been developing software for GNU/Linux systems and managing production networks since 1997. I've worked in small businesses and very large scale networks like Google. After the XZ Utils attack, I wrote a debugger that analyzed a running process to look for signs of namespace tampering, and Fedora uses that tool to protect some of its critical packages. Security is an important factor in my work. I work on Fedora and occasionally contribute to the package management infrastructure itself: dnf, rpm, PackageKit.