Mr. Markoff was born and raised in Houston, Texas, received his undergraduate degree from The University of Texas at Austin and his law degree from Oklahoma City University School of Law. He also studied Comparative Law at Oxford University, and Spanish at the Universidad de Valencia, in Valencia, Spain. While in law school, he was the recipient of the Raymond D. Naifeh Judicial Fellowship, and clerked for Oklahoma Country District Judge Eugene H. Mathews. Prior to his law career, Mr. Markoff worked on the 1988 Presidential Campaign as National Advance Staff, and as the Immigration Coordinator for the Houston Volunteer Lawyers Program.

Mr. Markoff was one of the first lawyers in Oklahoma to represent women injured by silicone breast implants and the diet drug combination, Fen/Phen. During those cases, and others, Mr. Markoff was interviewed by CNN, The CBS Evening News, Cosmopolitan Magazine and all major TV stations in Oklahoma City and Tulsa. He also represented and assisted Lynn Starks, who with the help of State Representative Leonard Sullivan, changed the laws regarding bunk bed construction statewide, nationwide and worldwide.

Professional Affiliations include The Association of Trial Lawyers of America, Oklahoma Trial Lawyers Association, Oklahoma Bar Association, Oklahoma City University School of Law, Board of Directors, 1996-1998, Oklahoma City University School of Law Dean's Circle 2001 - present, Oklahoma County Bar Association. Admitted to practice before the United States District Court for the Western District of Oklahoma.