The process is 4.5 - 5 hours: 1. Recruiter 2. SQL / "data model" plus "tell me about a project" 3. Machine learning case plus "tell me about a project" 4. Hiring manager 5. Product manager partner 6. They also allege you meet the CPO or other founder but I didn't get to this round.
I liked most of the people I met but I felt disrespected by some of them. (Btw I'm a woman of color and the team was not diverse.)
During my ML case, one of the interviewers: 1. was clearly on Slack at the same time 2. said point-blank that I lied about my accomplishments when in fact he just didn't understand the causal ML model I was explaining (and did not give me the benefit of the doubt by asking clarifying questions). While I was a little over-caffeinated and could have explained more clearly, I was put off by his unfounded rudeness. Both of these interviewers were less experienced than me by 3-5 years and had never worked in production ML (I have) and yet were acting like they knew ML better than me.
They were nice enough to call back to say they weren't moving forward, but said it was company policy to not give feedback. Then they lied to me - they said they wanted to consider me for future roles and asked me to please reach out, but reposted the job listing 2 weeks later!
Finally, I thought the interview questions were silly and not optimized for minimizing False Positives or False Negatives. Instead of asking about the problem space of mental health, which would give them a chance to see a candidate's thought process, they asked softballs about restaurants. They also spent 5+ minutes of a few interviews talking about weekend plans but then were super rushed during the technicals! Overall, I believe they are likely recruiting based on 1. personality 2. healthcare experience 3. your tolerance for working a 60 hr week doing borderline-menial tasks.
I got the strong impression from the interviewers that the company is a mess w/ "constantly changing priorities" and 100 sales and accounts people asking "data scientists" to pull numbers all the time. This is clear from the company reviews too. The one interviewer was probably on Slack during the interview because he was under the gun.
Because Spring is not a B2C company but rather "B2B2C" you can tell they don't care about making a good impression with actual consumers.