Dario Bargas attended the University of Texas at Austin's undergraduate and law school programs on full academic scholarship. In 1987, he graduated from the University of Texas School of Law and moved back to his hometown, Corpus Christi. There, he found great satisfaction in representing thousands of indigent individuals in various legal matters. After five years of representing individuals, Mr. Bargas decided to open his own firm in 1992.

From 1992 to 2000, Mr. Bargas maintained his own solo practice, where he handled a wide variety of cases involving serious personal injury, divorce, custody, and criminal cases.

In 2000, Mr. Bargas joined Mikal Watts' Major Personal Injury Law Firm as a partner where he handled complex personal injury and other plaintiff's litigation. Later that year, Valero Energy approached Mr. Bargas to handle their commercial litigation docket.

Mr. Bargas left Watts' firm to open his second firm. For the next 8 years, he handled over 500 Valero cases including several multi-million dollar cases.