Before he became a judge, Couriel had about 16 years of experience as an attorney. In that time, he argued 12 jury trials, 3 non-jury trials, and 4 cases for administrative bodies (government agencies) to completion. These were mostly in federal court.
He spent the first 5 years in private practice in New York, where he specialized in cross-border internal investigations, often in Europe or Latin America. He represented large corporations and financial institutions for litigation, insolvency, and transactions. He then returned to Florida and spent 4 years as a Federal Prosecutor. In that role, he prosecuted fraud, public corruption, identity theft, narcotics offenses, and violent crimes. After that he returned to private practice, where he represented clients like Latin American corporations, investment funds, and individual investors. He specialized in cross-border disputes and investigations, including financial disputes, government enforcement defense, judgement enforcement, and claim monetization.
While working in private practice in 2017*, he interviewed to be appointed as U.S. Attorney for the Southern District of Florida. Senator Marco Rubio suggested his appointment to then-president Donald Trump. According to Politico, he was not selected because Couriel didn't vote for Trump in 2016.
Early in his career, he clerked for 1 year at the U.S. District Court, District of Columbia. He was also a Summer Associate at 2 law firms, one in New York.
Couriel also ran unsuccessfully for political office as a Republican twice.
* His application for Supreme Court places this in 2019.
This judge is a member of the Federalist Society.
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* Appointed instead of running for election because of a vacancy between election cycles.