Bloomberg Software Development Engineer (SDE) interview questions

All on-site rounds at their NYC Headquarters. 3 leetcode coding rounds, 2 system design rounds and 1 hiring manager round. Leetcode hard questions were asked. 30mins whiteboard round each. API design rounds were basically system design rounds

The interviewer was very nice and the process was smooth, but I didn't figure out the question at the end so I got rejected finally. But I have to say the interview was very nice tho