[1] Colombino joined Montevideo Wanderers' academy system in 2006, signing from youth team Arapey Mendoza.
[1][4] Forty-one further appearances followed across two seasons, which preceded Colombino scoring his first senior goal in August 2014 versus River Plate; a ninety-third minute winner at the Estadio Saroldi.
[1] He netted goals in the next campaign against Nacional and Peñarol on the way to a total of one hundred and seventy-eight matches in all competitions in eight seasons; placing as runner-ups twice.
[1][5] He appeared just once for the club, playing the final fourteen minutes of a Copa Argentina win over Torneo Federal A's Douglas Haig on 5 March.
[1] Colombino went back to his parent team on 24 June, subsequently participating in July league games with Cerro Largo and Fénix.