Fiserv Software Developer Sr interview questions

2 technical round 1 managerial round Hr round Interviewer was slightly arrogant all counter questions They will not give enough time for answers Acts like they are in hurry Questions are average in difficulty but they will just counter your answer and will ask cross questions even though that question is meaning less

I applied to Fiserv via Kforce. They had 2 technical interviews then interview with Director. During technical interview they had more than 5 leads. It was simple interview question that mostly relates with core java like optional, lambda, funtional programming.