Good overall fun but hard questions that I couldn’t pick up in time. The people there seem nice and the overall atmosphere was great. The people who were there are very friendly and kind. Overall good interview process but not a great experience for me personally.
2 rounds phone screen(1 coding + 1 system design) and 4 rounds onsite interviews(1 coding + 1 design + 1 deep dive + 1 behavior).
general good experience but need fast coding
The technical round kicked off with a question about finding the length of the longest substring without repeating characters. I felt prepared, and as we discussed my approach and time complexity, I could sense I was on the right track. Later, there was a behavioral round where I described my experiences and team dynamics. The wild moment came when I realized I had literally seen this exact problem on prachub.com during my prep a week earlier. Afterward, I received an offer, which I happily accepted. Overall, a rewarding experience.
Interview questions [1]
Question 1
Given a string s, find the length of the longest substring without repeating characters. Discuss your approach and time complexity.
I applied online. The process took 3 weeks. I interviewed at OpenAI (San Francisco, CA) in Apr 2026
Interview
First round with HR: HR was a little impatient, probably very busy.
1 coding round, multi-part coding problem under 1 hour with tests passing. Plan your time wisely. Don't spend time on stuff like pseudo coding in earlier parts. Interviewer wasn't very engaged.
1 system design round. Interview was smart and nice.
Reject on the following day.