Yi Wei is a research engineer at Microsoft Research Cambridge. At MSR, he has been working on the Developer Assistant project for a few years and delivers the popular Developer Assistant Visual Studio Addin to improve developer productivity. Recently, he started to work on F# and MBrace and really enjoys the beauty of cloud programming using the combination. Before joining Microsoft, Yi was a PhD student at ETH Zurich with experience in software verification, automated testing and fixing of object-oriented software.