theoretically, anyone's life could change very majorly soon
I don't see why you wouldn't say you're interested.
Of course I'm going to say I'm interested! I'm ecstatic about the possibility!
question, what kind of stuff was on your github? and why would it be interesting to a google employee?
Honestly, I'm not even sure. I've contributed to one of Mozilla's projects to build a new computer programming language called Rust, participated in a few Ludum Dare game creation competitions, and have some various stuff about Blockland in there. It does span a lot of computer programming languages though, which is an attractive attribute.