Grischa Rehmer

Grischa Rehmer is Senior Consultant and Senior Solution Architect IBM Cognos TM1 at gmc² GmbH. The company combines professional know-how as an IBCS® Certified Provider with implementation expertise as an IBM partner in the Cognos environment.


Diplom Informatiker Grischa Rehmer studied computer sciences with a specialization in media and economics at the University of Applied Sciences Bonn-Rhein-Sieg. He started his BI consulting career at  gmc² GmbH in autumn 2004. Today, he is both Senior Consultant and Senior Solution Architect IBM Cognos TM1 and deals with the topics of Business Intelligence, reporting, forecasting and planning, controlling, leadership development, quality management in the logistics, telecommunications, pharmaceuticals, financial services, and aviation industries. He is a certified IBM Cognos TM1 Developer and Administrator and has implemented a variety of business intelligence projects for corporations and SMEs.

Leadership in Visual Business Analytics has been a strategic goal for gmc² since the beginning. Following this target, Grischa Rehmer develops complex reporting solutions, based on the SUCCESS formula of IBCS®, using IBM Cognos TM1, Microsoft and the self-developped gmc² ReportController since 2008.

IBCS® Certified Consultant

Grischa Rehmer has successfully completed the IBCS® certification for successful design of reports and presentations at the HICHERT+FAISST IBCS Institute in September 2014.