Williamson joins the Sound after working as an Assistant Coach for the LIU Post Women's Soccer team for the past four seasons. He helped coach the Pioneers to four NCAA Tournament runs, twice making it to the last 16. LIU Post were ranked 12th nationally for the 2018 end of season poll. He is also the Director of Coaching for the Bellport Soccer Club where he is responsible for the growth and development of players, parents, coaches and trainers throughout the club.
Williamson's previous experience includes time spent with UK Elite Soccer, NOGA Soccer, and the New York Red Bulls Training Programs.
Originally, from Kent, England, Williamson earned his Bachelor's Degree in Sport Management from Coventry University in the United Kingdom. His other qualifications includes the USSF D License, USSF Director of Coaching Diploma, USSF National Youth License, United Soccer Coaches Premier License, and United Soccer Coaches Regional Goalkeeping License.