Guillaume Sauthier is co-founder and software architect of Peergreen, an IT company specialized in Java PaaS. He's working on Peergreen Platform, a modular cloud platform based on OSGi.
In the past, he also worked at Bull for 9 years, on the JOnAS open source application server. He worked on the web services area for many years, contributing and becoming a committer in the Apache Axis project. Since then, he continued his contributions to various Apache projects: CXF, Felix, ... He is an OSGi expert and have provided (with the help of Mikael Desertot) the very first, fully OSGi based, EJB3 container (OW2 EasyBeans). he is a contributor on some highly used middleware components (Apache CXF for web services, Apache Felix for OSGi).