Long and can take a matter of months. As long as your still under consideration on the website you're literally still under consideration. Depending on business needs, it can be upwards of 6 months to get back you or as little as a few days. The interview are set up by secretarys and they have little information to give you. They use the STAR interview method and will ask you about processes you have improved, constraints you have over come, data analysis, metrics, and things of that nature. Make sure you respond to the interview questions in the STAR format. They like to see examples if you have them. If you write anything down while going through the interview they will take it with them. Ask questions about the position, they feel that you're interested when you do so.