Wait in the lobby and fill out form. The first round ask some general questions and the manager would decide if you have the second round. The second round ask you some related questions and let you write a short job description.

First was a sparkhire interview (video interview), then a in-person interview with the hiring manager, and then a shadowing interview with a worker. Overall process was easy and not difficult, as they did a good job reaching out and responding to any emails or phone calls.