Sean Kiernan is an NFLPA-certified Contract Advisor and sports agent with Athletes First, one of the leading athlete representation firms in professional football. Based in Atlanta, Georgia, Kiernan has been certified by the NFL Players Association since 2015 and specializes in NFL player representation, contract negotiations, athlete marketing, and long-term career management. As part of Athletes First's football division, he works with professional football players and NFL Draft prospects, helping them navigate the business aspects of their careers while maximizing opportunities on and off the field. Prior to entering athlete representation, Kiernan built a strong foundation in sports marketing and athlete management. He joined Athletes First after gaining experience in player representation and business development, where he developed expertise in contract strategy, endorsement opportunities, and athlete branding. His background enables him to provide athletes with comprehensive guidance throughout every stage of their professional careers. At Athletes First, Kiernan is part of a team that represents many of the NFL's premier players, coaches, and football executives. The agency provides a full range of services, including contract negotiations, marketing and endorsement procurement, public relations support, media opportunities, financial planning coordination, and post-career development. Athletes First is consistently recognized as one of the most influential agencies in professional football representation.