Sirius Computer Solutions knows that enterprise networks are no joke. The company sells, configures, and supports enterprise data servers and network software from IBM, Dell, and other vendors. It has partnerships with business software providers such as SAP, Cisco, and Oracle to provide services such as consulting, installation, and support for their products. Clients come from industries such as manufacturing, pharmaceuticals, telecommunications, health care, and financial services. Customers have included Blue Cross and Blue Shield of Kansas City, the City and County of Honolulu, Hawaii, and Roland Corporation. Private equity investor Thoma Cressey Bravo owns a majority stake in Sirius.