Work:

• SRE at several orgs
• SRE Techlead at Google Switzerland Gmbh (2007-2012)

Hacking:

• Linux kernel IP Aliasing author - that eth0:X thing :) ...
• Linux kernel IP Masquerading re-implementation and modularization
• Linux kernel IP dyn_addr idea and implementation

... and several other loose free software bits, like:

• OpenS/WAN (former FreeS/WAN) modular crypto algorithms support
• OpenVPN/IPv6 transport support
• QEMU multicast virtual ethernet support [net=mcast]
• kube-router LB improvements (advertising LB IPs)
• kubespray kube-router support
• kube-libsonnet improvements
• kube-prod-runtime improvements