Vahan earned his Doctor of Jurisprudence degree from University of Southern California. While earning his doctorate degree, Vahan was also the Editor and Member of the Executive Board of Hale Moot Court Honors Program, as well as member of Jessup International Law Moot Court Team, where he was part of the select team of students representing his law school in international mock trial competition between various law schools. 
During his studies, Vahan received numerous awards and was recognized by many organizations. Such awards included: Distinguished Man of the Year Award; Letter's and Science Dean's Honor's List (multiple years); National Dean's List Award (multiple years); Kiwanis Club Award for Leadership and Academic Excellence; Associated Student Body Leadership and Academic Award; AGS Honor Society Academic and Service Awards; Robert J. Taylor Scholar's Award; Gulbenkian Scholastic Achievement and Leadership Award. 

Vahan’s work experience is very diverse, including involvement in law, politics, and business.
During President Bill Clinton's administration, Vahan worked at the White House think-tank, Economic Strategy Institute, where he researched, analyzed and wrote reports on various issues of US trade relations.  His reports were distributed to the White House and the Congress, and used in drafting US economic policy and assisting in negotiation process and official meetings with various foreign governments.

Subsequent to this, Vahan was hired by a major lobby group in Washington DC, to assist them in their efforts. He met with Congressional officials regarding pending bills and helped to draft proposed legislation regarding various issues at hand. He assisted the governmental affairs department in their agenda of writing to and meeting with Congressional officers regarding specific bills and initiatives upcoming for a vote. 

Vahan returned to Washington, DC to clerk for the U.S. Department of Justice, at the U.S. Attorney's Office, where he worked on prosecuting major criminal cases in US Federal Courts, including major international money laundering and drug trafficking cases. He also assisted the FBI and DEA agents in on-going investigations and case-preparation for prosecution. 

Since founding Yepremyan Law Firm in 1998, Vahan has become a trusted legal and strategic adviser to a range of clients in the Los Angeles area and beyond. 

Besides his busy legal and business career, Vahan has continued his political involvement and service. 
He was asked by President George Bush to serve on the Presidential Business Committee as one of the California representatives.  Vahan was also invited by the Republican Leadership of the United States Senate to serve as a member of the Republican Senatorial Inner Circle from the State of California.  Subsequently, Business Advisory Council appointed Vahan as the Honorary State Co-Chairman for the State of California, which was published in The Wall Street Journal.  His main task was to identify and address issues California businesses face, including legislation on tax reform and fiscal responsibility. 

Vahan has been and continues to guest lecture at numerous colleges, business groups and associations, and has authored numerous published articles on a wide range of business and legal issues.