Born in Montevideo, Szlafmyc studied Economics before switching taking a technical course to become a football manager at the age of 18.
He worked as a youth coach for Rampla Juniors, Miramar Misiones and Fénix before being invited by manager Ariel Holan to join his staff at Argentine side Defensa y Justicia in the end of 2015.
[1] After Holan left Defensa, Szlafmyc returned to his home country and to Miramar, working as manager of the under-16 team.
[4] In July, he returned to Miramar to work as a sporting director,[5] and subsequently joined Alexander Medina's staff at Talleres de Córdoba on 25 December.
[6] On 20 February 2021, Szlafmyc was named in charge of Segunda División side Central Español.