Upon completion of his clerkship, Park entered private practice focusing on litigation. He has handled a wide variety of cases including product liability, civil rights, personal injury, employment discrimination, wrongful death and insurance coverage cases. He is licensed to practice law in New Mexico, the Federal District Court of New Mexico, the United States Court of Appeals for the Tenth Circuit, and the District of Columbia.
During his tenure in the Legislature, Park has earned the reputation as an active and thoughtful legislator advocating on behalf of consumer rights, public safety and comprehensive education reform. He has been the prime sponsor of numerous pieces of landmark legislation, including reforming the payday lending industry, creating a used car lemon law, increasing penalties for sexual predators, passing a statewide ban on smoking in indoor workplaces, and sponsoring the Teach New Mexico Initiative.
Park is married to Jessica Perez. They have two daughters.