John Castillo is a Director, Technical Solutions Consultant at Fiserv. He possess expertise in data center, network engineering, disaster recovery, mpls, it management and 36 more skills. Colleagues describe him as "I worked with John on multiple projects. I always felt he exemplified the kind of colleague I liked to work with. He had a high level of technical, project and interpersonal skills. You could rely on his word. If he said something was going to happen it would either happen on schedule or you would learn early on of any issues while there was still time to stay on track. He was calm and measured when things went astray. He had that rare ability to make tough going as pleasant as it could… Show more"