• Assistant Professor/Dept. Co-Chair 2007-present: Animal, Biotechnology & Conservation, Delaware Valley University; Doylestown, PA; Assistant Professor 2007-present; tenured 2013
  • Lecturer: Animal, Biotechnology & Conservation, Delaware Valley College; Doylestown, PA; 2006-2007
  • Adjunct: Animal, Biotechnology & Conservation, Delaware Valley College; Doylestown, PA; 2005
  • President/CEO: Forest Partners International; Flourtown, PA; 2003-present
  • Senior V.P./Conservation & Science: Philadelphia Zoological Society; Philadelphia, PA; 1996-2003
  • Program Director: Marine Environmental Research Institute; Brooklin, ME; 1995-1996
  • Co-Founder:  C-Tek Associates; Bangor, ME; 1994-1996
  • Curator of Collections: The Phoenix Zoo; Phoenix, AZ; 1992-1994
  • Curator of Mammals: The Phoenix Zoo; Phoenix, AZ; 1988-1992
  • Curator of Wisner Children’s Village: Audubon Zoo; New Orleans, LA; 1982-1988
  • Curator of Education & Research: Central Texas Zoo; Waco, TX; 1980-1982