 Quintero was born in Blanchisseuse, Trinidad and Tobago and attended El Dorado East Secondary School, where he repeated his final year to improve himself academically prior to pursuing a career in football.Dwight has stated that his aunt, Tamara, was a significant influence on his early football career as she encouraged and provided him with confidence to have higher aspirations.In March 2009, Quintero joined the youth program at local club Joe Public and represented the "Eastern Lions" for three seasons.