5 years at Microsoft is boring. But you say: I pioneered the use of data semantics within Bing. That will get you a job interview anywhere where people care about search or semantics.
I think at a company like Microsoft you have a lot to do with whether or not the work is boring. There is a lot of political/organizational dysfunction that comes with a massive company that can make things a little tedious or boring. My experience has been generally positive and I have been able to focus on interesting problems for most of my time here.
You are now branded :-)