Alan Randall Steinberg joined Diamante Law Group, APLC, as a federal immigration attorney in 2017. While there, he handled the office's vast portfolio of federal immigration cases and supervised associates, law clerks and paralegals. Prior to working at Diamante Law Group, Alan Randall Steinberg spent three years as a federal immigration attorney in the Law Office of Judith (Judy) L. Wood. In Judy Wood's office, his responsibilities ranged from crafting briefs for the Ninth Circuit Court of Appeals and the Board of Immigration Appeals to obtaining asylum for unaccompanied minors from Central America.

A member of the Pennsylvania Bar and graduate of Tulane Law School, Alan Randall Steinberg served the Southern California chapter of the American Immigration Lawyers Association (AILA) as both a federal and state advocacy liaison. In addition, Alan Randall Steinberg has served on the Board of UCLA's Jonsson Cancer Center Foundation for 11 years.