Fi Money Software Engineer, Backend interview questions

I reached out to the recruiter over LinkedIn & shared my Resume. They shared the test link the next day & I completed on the same day & was informed about my shortlisting on the same day. The recruiter setuped the interviews the next week. The whole process was quite smooth & fast. I had a total of 4 rounds. First two were pure problem solving technical rounds, where I was asked 2 problem solving questions in each round & bunch of general questions related to development. Both the interviewers were very nice & friendly and dropped me hints wherever necessary. The third round was with hiring manager. It was a pretty interesting round, we discussed my past projects & one unique problem solving question. The fourth round was with one of the cofounders & it was mix of technical & behavioural questions. He also gave me a chance to ask questions & spent almost half an hour answering my questions & doubts. I was soon informed by HR about the outcome & rolled an offer. Overall the interview process was very interesting & a good learning experience for me.