Advisory Product Developer at IBM Past: Principal Consultant/Owner at WDriscoll Software Services, Product Architect at JME... Over 20 years of IT experience, primarily in Mainframe (IBM System z) software development. Deep knowledge of DB2, both for System z and Linux, Unix and... Over 20 years of IT experience, primarily in Mainframe (IBM System z) software development. Deep knowledge of DB2, both for System z and Linux, Unix and Windows. Expert in IBM System z Assembler language and C language. Has worked with C++ and Delphi (Object Oriented PASCAL) as well.