GLASTONBURY, Conn. – Open Solutions Inc. has hired Dave Krystowiak, a former Fiserv division president, to be OSI's senior vice president and general manager of its Strategic Solutions Group. His responsibilities will include sales and operations involving OSI's eSolution Internet banking and cash management tools, OSI's Check 21 and imaging solutions, Sound Software loan-origination applications, FTI Financial Technologies asset/liability, general accounting and CRM applications and the Maxaar interactive voice response unit, the company says. Krystowiak most recently was president of Still Point Advisers LLC, an independent consulting firm. He had been with Fiserv for more than 15 years, serving as a vice president in the core processing business unit before becoming a division president in 2000. OSI said it also has named Michael Nicastro, who had been managing the Strategic Solutions Group, to the new position of senior vice president of marketing and product management for the entire company. Both men will report to OSI's chairman and CEO, Louis Hernandez Jr.