Applied online via proofpoint's website. The great thing about applying for Proofpoint is that they don't force you to fill in your life story. Just upload your resume and hit send. Received a call from hiring manager and scheduled a phone interview a few days later. Phone interview lasted about 30 minutes. Was brought in for a live interview with the manager. Manager mainly talked about the job description. Then interviewed with another manager in the marketing department. I received a call at 8 PM the same day with an offer.