Brien focuses his practice on product liability, commercial litigation and arbitration matters, with primary emphasis on Engle-Progeny matters and talc litigation. He is involved in all phases of pretrial work, including depositions, motion practice and witness interviews. 

During law school, Brien interned for The Hon. Caryl E. Delano, U.S. Bankruptcy Court for the Middle District of Florida, and clerked for the Spielberger Law Group, an employment discrimination law practice. He also was actively involved in the Willem C. Vis International Commercial Arbitration Competition, winning first place in the Florida pre-competition round. Brien also served as President of The Pillars, a law student organization dedicated to cultural understanding, societal awareness and community service.

Brien remains deeply involved with the community. Through the Florida's Children First program, he serves as a pro bono attorney ad litem in juvenile matters. Before becoming an attorney, Brien worked for Bank of America, developing and maintaining relationships with clients and business partners, and ensuring compliance with governmental regulations and best practices in lending, privacy and ethics. 


Throwing the Baby Out With the Bath: Florida's Flawed Approach to Post-Adoption Inheritance, Connecticut Public Interest Law Journal, Winter 2019 (with Prof. Cynthia G. Hawkins).