Prior to his position as a state representative, Rep. Cortez was elected in 2007 and re-elected in 2009 to the San Antonio City Council. As a councilman for District 4, he prioritized developing the district's neighborhoods and citywide improvement projects. He fought to improve police and fire departments, clean up parks, and modernize libraries throughout the district. Mayor Julian Castro selected Rep. Cortez to serve as Chairman of the Audit, Infrastructure and Growth Committees, President of the San Antonio Housing Trust Public Facility Corporation, and the Governance Committee.

In 2019, Rep. Cortez retired from the U.S. Air Force after proudly serving for 20 years. He served for seven years as an enlisted airman with the 433rd Airlift Wing at Lackland Air Force Base, eventually rising to Staff Sergeant. In 2006, Representative Cortez was commissioned as Second Lieutenant. He was deployed to the Middle East in April 2016 for six months to support Operation Inherent Resolve. Rep. Cortez was awarded a Commendation Medal (First Oak Leaf Cluster) for Outstanding Achievement during his deployment.

During his tenure as a state representative, Rep. Cortez has successfully passed legislation supporting veterans and their families, improving our public schools, protecting senior citizens, and bringing jobs to Bexar County. Additionally, he has continually stood up for property rights through annexation reform on behalf of West Bexar County citizens. In the 86th Legislative Session, he served on the House Appropriations Committee - Article II, Statewide Health Care Costs Select Committee, House Resolution Calendar Committee, and Vice-Chairman of the House Elections Committee. During the 2020 interim, he was appointed to the Texas Legislative Council.

For the 87th Legislative Session, Rep. Cortez was appointed as the Chairman of the House Committee on Urban Affairs, providing him the opportunity to shape all urban cities' goals and objectives. This nine-member committee oversees municipalities, including their creation, organization, and powers. The committee also has jurisdiction over the Texas Department of Housing and Community Affairs and the Texas Commission on Fire Protection. He is also serving on the Higher Education Committee, which will address education beyond high school. Rep. Cortez believes that education is the great equalizer, and he is proud to do his part to strengthen the knowledge base for Texans throughout the state.

Rep. Cortez is married to Debbie Cruz-Cortez, J.D. She received her law degree from SMU Dedman School of Law and now practices immigration and criminal defense in South Texas. They are proud to serve the residents of House District 117.