Jeff Degrieck

Chief Operating Officer at OneStream

Jeff was an original founder of UpStream Software in January of 2000 and was involved in the design, development, and architecture of UpStream TB and then UpStream WebLink. Jeff then transitioned to head the services and support departments within the organization. After UpStream, Jeff went on to be a director of development at Hyperion Solutions and then Oracle Corporation before co-founding OneStream Software. Jeff utilizes his many years of experience in the CPM field and cross-departmental knowledge to ensure organization and customer success. He is a graduate of Michigan State University, where he earned a bachelor’s degree in Finance and Accounting.


  • Chief Operating Officer

    Current role

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