Received the invitation to complete an assessment at the beginning of the application process. After finishing the assessment, it was an interview. The interviewer was friendly and the whole interview was straightforward.
I applied through other source. The process took 3 weeks. I interviewed at Numerator (Chicago, IL) in Jan 2020
Interview
First call was with the hiring manager. Normal first round interview. Second call was with a colleague on my team who would be training me. Final round was an in person presentation and interview series with the same two people and another colleague.