I've completed whole process. There were 5 stages. 1. Initial screening call. Pretty standard stuff. 2. Coding interview. Live-coding task with one of the senior devs from Samsara. That happened week later after #1. After that, I got invited to last 3 stages that happened in a single day. 3. System Design. Very nice, as it was different than usual "Design a Twitter/Youtube/Spotify", but was a lot closer to actual day to day work. 4. Interview with Hiring Manager. Very nice call, mostly about previous work experience, how do you handle specific situations etc. 5. Coding interview II. Again live coding. My overall feelings were positive. All interviews were conducted nicely and in professional manner.

There was an initial phone screening with a recruiter followed by a 30-minute live coding test of moderate difficulty. After passing the initial screening three separate one-hour interviews were scheduled. These included a virtual whiteboard design session, an in-depth live coding test, and a cultural fit interview with the hiring manager.