I applied online. The process took 1 day. I interviewed at SZ Global (New York, NY) in Oct 2018
Interview
Received a confirmation email and schedule a phone interview. 30min long. Reviewing the resume. Asking some questions about organization promotion, leadership and structure. Not very good signal though. The HR is kind and explain to you the questions.
Two phone call interviews and the third one is face to face interview with founder. All The interviwer are very nice. Download the app before you go to interview and also prepare some ideas for the app.