Dr. Vargas has been teaching at the collegiate level for the past 13 years and is still involved in classroom instruction of courses. In 2011, he was a key participant in the CCA grant initiative that funded four institutions in the University System of Georgia (USG) to enhance the success rates in developmental programs by incorporating technology and redesigned models of instruction. In January 2013, Dr. Vargas was appointed by the USG to serve as a member of the statewide Task Force on the Role of Mathematics in College Completion. He was subsequently appointed by the USG as chair of the Ad Hoc Steering Committee.. Dr. Vargas was the 2014-2015 Chair of the Academic Advisory Committee on Mathematical Subjects (ACMS) and is the leader of several initiatives including the transformation at scale to adopt open educational resources in Mathematics courses, as part of the Affordable Learning Georgia efforts.