Fidelity Investments interview questions

4 rounds 1. Tech round - 2 case studies(telephonic) Face to face rounds: 2. HR round(how do I fit in, expected salary) 3. Tech round -2 case studies 4. Manager round-going through resume Tech round questions were very good but I could come up with the right answers. HR round consisted of some checks to see consistency,interest in the role, whether I would stay with them etc. Manager round was less structured and was similar to HR round. Interviewers were polite,patient and helpful. Not much scope for negotiations. My offer was confirmed through a job consultant but it was cancelled the next day due to some reason related to background verification. This reason was very unconvincing and a stark contrast to all the proceedings before. Very disappointed at this turn of events.