Julian Rueda

Our management team is led by GSI's president, Julian Rueda, P.E. Julian is a 1981 University of Illinois-Champaign-Urbana (UIUC) civil engineering graduate who started his career working at the Chicago Department of Transportation. He began Geo Services, Inc. in 2000.

Andrew Ptak

Andrew (Drew) Ptak, has been Geo Services, Inc.'s office manager since 2003. He is also a 1993 UIUC (BS, MS) graduate of UIUC Civil Engineering (geotechnical and structural specialties) who began his career working as a foundation engineer for Chicago Bridge and Iron (CBI) and STS Consultants, Inc.