I applied online. The process took 2 months. I interviewed at Acumen (Washington, DC) in Apr 2020
Interview
I had one phone interview and I was invited for an in-person back in 2019. During the in-person interview, there were 3 rounds , each lasting about 30 minutes. There were some case-based questions related to to data analysis.
Interview questions [1]
Question 1
They mostly want to know about your experience with data and research. I recommend thoroughly reviewing your research work/ data projects in detail prior to the interview so that you're able to comfortably discuss the details of your experience.