Depends on how busy the hiring managers are and the amount of turnover they are dealing with. Expect anywhere from two weeks to two months - with three to four weeks being average. Most jobs are advertised for two weeks and interviews start after that.
I applied in March, got a call within a week and had two interviews in April. I started the day after the second interview.
2 weeks or less
Completed application and additional information that was required. Within a month a response was received.