Was contacted by HR/Recruiter representative at Zendesk and had the standard phone screening interview review of my resume. Was instructed to review some online materials and demonstrations and try the free version of their solution. Got a call back from a hiring manager for a phone interview and an opportunity for me to demonstrate the free solution to him via web. A couple weeks later went in for the in person interview with the hiring manager and a few members of the team. Received positive feedback and was called back for a second in person interview, both at the San Francisco HQ. This whole process took about 4 weeks but communication from HR or the interviewer did keep me informed throughout the process. I received the standard HR decline email. Process was professional and polite just seemed the scope of the job changed after I started interview process.