Norwich City, Maidstone United, Billericay Town.
Jamar signed for Chelmsford City in June 2019 from Billericay Town.
The wide-forward started his youth career with Norwich City and went on to make 6 senior appearances for the first-team, scoring one goal vs Huddersfield Town. During his time with Norwich he had loan spells with Coventry City, Leyton Orient, Southend United, Yeovil Town and Stevenage, gaining valuable Football League experience.
In June 2014, former Norwich City manager Neil Adams was quoted saying "Loza is a direct player who is lightning quick and can run with the ball, and he causes defenders a lot of problems"
After leaving Norwich in June 2016, Loza signed for then National League side Maidstone United in the October of that year and scored his first goal for the Club five days later vs Sutton United.
He made 75 appearances for Maidstone, scoring 13 goals in all competitions before heading out on loan to Woking in October 2018 in a 3-month loan deal.
Loza netted for his new team shortly after signing against ourselves in the 1-1 draw at the Laithwaite Community Stadium in October 2018. He made 9 appearances, scoring 7 goals for the Cards.
His impressive performances for Woking caught the eye of many and Essex rivals, Billericay Town secured Jamar's signature from Maidstone on a permanent deal in January 2019.
He has also featured for the Jamaican national team, making 4 appearances for the Reggae Boyz.