I applied through an employee referral. The process took 4 weeks. I interviewed at Siemens (Philadelphia, PA) in May 2012
Interview
Was an employee referral and then moved to phone interview. The next step was a group gathering and interview with other candidates for the position. It was a weird setting. The next day I had panel interviews with the decision makers for the specific position I was applying for. The entire process took a little over a month.