...And I haven't found it to be a major problem, being an ex-Googler a little over a year out. Tech skills are easy to pick up on your own. My current startup is based on Node.js, a native Android client, and AWS; the one before it was Django & Heroku. Haven't tried looking for jobs yet - I made enough at Google to not have to worry about that for a while - but I occasionally get in-bound interest from big-name, fast-growing startups. Most clueful hiring managers look for experience with problems, not with solutions, and Google lets you face problems that the rest of the industry won't deal with for a while.
GFS, MapReduce, BigTable were the key Google inventions that became the sparks that ignited the modern day big data/analytics revolution.