July 01, 2012 –present – Associate Department Head and Program Leader, Wildlife and Fisheries Extension Unit, Texas AgriLife Extension Service, Department of Wildlife and Fisheries Sciences, Texas A&M University.

September 1, 2009-present – Associate Professor and Extension Wildlife Specialist, Texas AgriLife Extension Service, Department of Wildlife and Fisheries Sciences, Texas A&M University.

March 1, 2005-August 31, 2009 – Assistant Professor and Extension Wildlife Specialist, Texas AgriLife Extension Service, Department of Wildlife and Fisheries Sciences, Texas A&M University.

April 1, 2002-February 28, 2005 – Assistant Professor, Texas Agricultural Experiment Station, Department of Wildlife and Fisheries Sciences, Texas A&M University.

September 1997-March 2002 – Natural Resource Specialist – Research Scientist, Gus Engeling and Richland Creek Wildlife Management Areas, Texas Parks and Wildlife Department.

Spring 1996-Spring 1997 – Graduate Research Assistant, R. J. Baker laboratory, Department of Biological Sciences and the Department of Range, Wildlife, and Fisheries Management, Texas Tech University.

Spring 1994-Fall 1995 – Graduate Teaching Assistant – Course Instructor, Introductory Wildlife, Department of Range, Wildlife, and Fisheries Management, Texas Tech University.

Fall 1993-Spring 1993 – Graduate Research Assistant, R. J. Baker laboratory, Department of Biological Sciences, Texas Tech University.

Spring 1991-Fall 1993 – Graduate Teaching Assistant, Laboratory Instructor, Natural History of the Vertebrates, Department of Wildlife and Fisheries Sciences, Texas A&M University.

January 1989-December 1991 – Laboratory Technician, J. W. Bickham laboratory, Department of Wildlife and Fisheries Sciences, Texas A&M University.