Skype on the Xbox? A list of the work shows that Microsoft is looking for a software engineer for a team that works to bring VoIP client on the Xbox 360 and possibly also on the future of Redmond.
The ad is very clear and explicit, engineers must have knowledge of programming languages and development of video games, its job is to lead and integrate Skype functionality on the Xbox 360 and video games for consoles.
There is currently no accurate information, but it seems that the version of Skype has been under development for the new Xbox, which will come at the end of 2013.