Ortiz began with Gimnasia y Esgrima of the Argentine Primera División.[1][3] In January 2016, Ortiz was loaned to Primera B Nacional team Estudiantes.[4] He made his professional debut on 3 April in a win against Atlético Paraná, coming on as a substitute at 1–1.[1] He featured seven more times in 2016, before playing four times in the following campaign of 2016–17.[1][5] He returned to Gimnasia y Esgrima in January 2017 and appeared on the club's first-team bench on 27 May against Colón but was unused.[1][6] In May 2018, Ortiz scored on his debut versus Newell's Old Boys; father Darío was caretaker manager.[7]
On 20 June, Primera B Nacional's Quilmes loaned Ortiz; having renewed his contract with Gimnasia y Esgrima until 2020.[1][8] Nine appearances followed for Quilmes before he went back to his parent club, who loaned him out to Ecuadorian Serie A side Olmedo on 16 January 2019.[1][9] Like with Gimnasia y Esgrima, Ortiz netted on his bow for Olmedo in a 3–2 defeat to L.D.U. Quito on 9 February.[1] He scored one further time, versus Independiente del Valle, in eighteen games for the Ecuadorian team.[1] In January 2020, Ortiz moved to Peru with UT Cajamarca.[10]
Personal life
Nicolás Ortiz is the son of former professional footballer Darío Ortiz.[4][6]