I applied through a recruiter. The process took two weeks.
It was thorough but fair. There was a phone interview, then a coding problem, followed by a half-day at their test site. While I was skeptical at first, I did feel like this was one of the best interviews I've gone through, and the care that they put into it shows. At the end, I knew the team that I was signing up for, and I felt like I gave them a good sense of who I am.
The focus was mostly on software system architecture and design. There was nothing that was brain-teaser-style.
The following metrics were computed from 12 interview experiences for the Zipline Senior Software Engineer role.
Zipline's interview process for their Senior Software Engineer roles is very selective, failing most engineers who go through it.
Candidates reported having mixed feelings for Zipline's Senior Software Engineer interview process.