On 15 July 2016, was promoted to Sabadell's reserve side in the Tercera División.[4] Viti made his first team debut for the Arquelinats on 20 August 2017, playing the last four minutes in a 0–0 Segunda División B home draw against Elche CF. He scored his first goal for the club on 14 October, netting the opener in a 1–1 draw at Atlético Saguntino, and finished the campaign with two goals in 22 appearances for the main squad.
On 7 April 2020, Martínez signed with Canadian Premier League expansion side Atlético Ottawa.[7] He made his debut in Ottawa's inaugural match on August 15 against York9.[8] On 7 October 2020, Martínez was sent on loan to Deportivo Alavés for the Canadian off-season, where he joined the club's B team in the Segunda División B.[9] He returned from loan on 29 January 2021, after making eleven appearances and scoring one goal for Alavés B.[10] On 13 January 2022, Ottawa elected not to exercise its contract option on Martínez.[11]