Kristoffer Gronowski has been working at Ericsson AB since the summer of 2004. Currently working as a systems manager for the multi media platforms division where he is responsible for the in house SIP container strategies and for various third party solutions. Before joining Ericsson Kristoffer was for four years working as a senior developer at Hotsip, then a startup company today part of Oracle, focusing on Java SIP services like voice, video, chat, presence, and gaming. Kristoffer is also a member in the JSR 289 expert group standardizing the next version SIP servlet container. When not working Kristoffer usually does things near any kind of water. A common weekend activity is to visit the beautiful Finish island of Åland.