FactSet Software Engineer I interview questions

Gave them my resume at university career fair and got a phone call to schedule a phone interview with their market data team a week later. Phone Interview: The interviewer was a senior software engineer who had been with FactSet with more than 6 years. He asked me to describe some important projects on my resume and then went on to ask basic data structures and C++ related questions, no coding at all only concepts. The interview went well and I got a request for on-site interview at their Norwalk office. On-site interview: The on site interview started with a "light" breakfast and demo of their product and a small executive talk. First round was C++ code review (1:1). They gave me 5 pages of poorly written (but compilable) C++ code and asked me to find mistakes. Typical mistakes I found were memory leaks, infinite loops, poorly designed functions, poorly designed class interface etc. The interviewer seemed reasonably happy with my review. Second round was about design (again 1:1). I was expecting an object oriented game design type question but he picked up a project from my resume and asked me to extend the design to meet certain security requirements. The problem was quite open and I was not sure what he was expecting. But, I thought I did okay in this one. Then came the data structures and algorithms round (this was 2:1). They asked me to code atoi function and finding lowest common ancestor of tow nodes in a tree. I did the first problem pretty quickly. And presented an algorithm for the second one. But, they wanted a more efficient solution. I was able to come up with few improvements but before I could improve it further to their satisfaction they said the time was over and that I had to call it quits. While leaving the two guys said "good luck" to me and I knew that was a bad sign. I think this round hurt me the most. Then there was 45 min lunch with another engineer. Casual, "get to know", kind of affair. Fourth round was 1:1 interview with director of the team. He asked me resume related questions and was basically trying to gauge my attitude/skills , where I would fit in the team etc. Fifth round was typical HR interview. All in all, it was a good experience. They paid for all the travel and living expenses and were generally nice/friendly. Got a thank you email after a week.

Applied through my school's career fair. Got called for an onsite interview. They gave a demo of their product and then I had 5 interviews with 1-2 people. They also took me out to lunch. Overall, it seemed like a very good company for work-life balance. People were nice too. I got an offer within 2 business days. I have not accepted the position yet but seems like a good company.