I applied through an employee referral. The process took 2 weeks. I interviewed at Upwork (San Francisco, CA) in May 2016
Interview
Group presentation with around 5 or 6 designer, PM and dev people. Present one of my project and then they asked me some questions on details on why make such a design decision. After that, there were 3 1 on 1 meeting with some of the designer and dev team