ALFONSO STARTED HIS COACHING CAREER IN 2013 AT DOVER STRIKERS TRAVEL SOCCER CLUB, COACHING HIS YOUNGER BROTHER’S TEAM AND WINNING THE MORRIS COUNTY YOUTH SOCCER ASSOCIATION (MCYSA) LEAGUE CUP. IN 2017, HE JOINED THE DOVER HIGH SCHOOL COACHING STAFF WHERE HE HAS WON THREE NJAC LIBERTY DIVISION CHAMPIONSHIPS (2017, 2018, 2020) AND TWO NORTH 2 GROUP 2 CHAMPIONSHIPS (2017, 2020). IN 2021, HE JOINED THE NJ ODP 2010 BOYS COACHING STAFF, COMPETING IN REGIONAL ODP TOURNAMENTS. ALFONSO IS CURRENTLY AN ASSISTANT COACH FOR THE ST. ELIZABETH UNIVERSITY MENS PROGRAM AND A YOUTH-DEVELOPMENT COACH FOR THE NEW YORK RED BULLS.
ALFONSO HOLDS CERTIFICATIONS FROM UNITED SOCCER COACHES, US YOUTH FUTSAL, THE ENGLISH FA, AND MBP COACHING SCHOOL (SPAIN), IN ADDITION TO HIS USSF NATIONAL C-LICENSE.