4 interview rounds. 1 initial phone interview with HR, then 3 more with team members at the office I was applying for, all phone or conference call since office was overseas. Overall a pleasant experience, process was longer than I expected. Mostly behavioral questions. They really emphasize fit, both for the company and for the position. For FSA, make sure you prepare for a hypothetical sales / customer service call roleplay scenario - very likely will come up. I underprepared for that part and didn't get past the final round.