Glassdoor users rated their interview experience at Keystone as 100% positive with a difficulty rating score of 3 out of 5 (where 5 is the highest level of difficulty). Candidates interviewing for Software Engineer II and rated their interviews as the hardest, whereas interviews for Software Engineer II and roles were rated as the easiest.
The hiring process at Keystone takes an average of 60 days when considering 1 user submitted interviews across all job titles. Candidates applying for Software Engineer II had the quickest hiring process (on average 60 days), whereas Software Engineer II roles had the slowest hiring process (on average 60 days).
Total 4 rounds—HR screening, first round (1 case), second round (3 cases), final round with partner. The cases were open-ended compared to MBB cases, and pretty straightforward. Economics and strategy concepts tested.
I applied online. I interviewed at Keystone (New York, NY) in Jun 2026
Interview
Many interviews; 30 min behavioural, then case, then 3 case interviews for final round and usually one with partner after plus a writing assigment - quite a few interviews. Strategy consulting interviews despite the nature of the work. Highlight hard data / programming sklills if you have them.
1st round is 30 mins with a recruiter, 2nd is a case itnerview with 2 consultants, 3rd is back to back case interviews with consultants. overall interviewers were nice to talk to