Fiserv has hired former Arvest Bank Chief Technology Officer Ninish Ukkan as chief information officer of digital and financial services.  “After four years of driving digital transformation at Arvest Bank, I am thrilled to officially join the team at Fiserv,” Ukkan posted on LinkedIn this month.  Ukkan is the latest banker to join Fiserv.  “Fiserv has added new leaders across technology, product and sales, each bringing deep industry expertise that will […]