Fiserv Software Engineer interview questions

I had interview with tech lead and team lead. They went through various both technical and system design with skills and experienced I had and what they expect for their hiring role. The interview experience is great outside of recruiter Samuel. He rushing on interview schedule, changing last minute and accusing me of no show after interview completed. Call me no serious with Fisver.

It was pretty typical software engineer interview with a technical round, a system design round and a hiring manager round. Prepping fundamentals will be helpful. Technical round was about the work using some apis and hiring round is more focusing on the team fit with previous experiences