I applied through another source. The process took two weeks.
The potential manager reached out to me via LinkedIn to set up some time to describe the company. I had a great conversation with him and had lots of questions because of their cool product and great mission. I moved on to the second round, which was labeled as the technical interview. I asked the recruiting coordinator if there was anything I should prepare for. I was relayed the information that no preparation was needed and to briefly review statistics and materials. Given this, I spent maybe five hours reviewing these topics via old notes and online resources to refresh myself on the general concepts of these. Going into the interview, I was presented with four "normal" technical problems resembling college textbook or midterm problems. I was very caught off guard and did my best to answer, but ultimately knew I was not well prepared for it.
As expected, I was not offered the job, but I wish I was more well informed on what to expect. The manager gave me a call to let me know, and he too was not informed of what I was told. It seems like a great manager, so it was a very unfortunate situation that may have been resolved with better communication.
The following metrics were computed from 3 interview experiences for the Zipline Senior Mechanical Test Engineer role.
Zipline's interview process for their Senior Mechanical Test Engineer roles is extremely selective, failing the vast majority of engineers.
Candidates reported having very good feelings for Zipline's Senior Mechanical Test Engineer interview process.