I applied through a recruiter. I interviewed at Ellipsis Labs (New York, NY) in Mar 2026
Interview
It was supposed to be a long process but I only got to the second round. First round was a call with internal recruiter. Went fine.
Second round was a tech screen. Medium difficulty and the interviewer was very nice/genuine.
Interview questions [1]
Question 1
Take an array of blockchain objects (references to previous block) and re-construct a valid block chain. Handle edge cases like duplicate previous blocks or multiple blocks with the same name. Use recursion to handle re-constructing a divergent chain and take the longer one.