Apple looking for engineers to improve it's speech technology

It seems Apple is looking to improve it's speech recognition technology (which, from my personal experience is really needed):

http://jobs.apple.com/index.ajs?BID=1&method=mExternal.showJob&RID=68870&CurrentPage=1

http://jobs.apple.com/index.ajs?BID=1&method=mExternal.showJob&RID=68871&CurrentPage=1

http://jobs.apple.com/index.ajs?BID=1&method=mExternal.showJob&RID=68872&CurrentPage=1

http://jobs.apple.com/index.ajs?BID=1&method=mExternal.showJob&RID=68873&CurrentPage=1

After the acquisition of Siri earlier this year, it seems the iOS 5 guessing game has some new features to think about.