Pandiani was born in
Montevideo, The family moved to Spain after Walter established his career there. Nico played in the youth system of
CE Premià, and had linked up with the junior teams of
Espanyol in 2012–13 pre-season as part of a trial, but then followed his father to
Villarreal in August 2012, where he was to play for
the club's C team. In January 2013, the pair moved on to
Segunda División B (third tier) club
Atlético Baleares, where son as well as father signed a first-team contract. Pandiani made his league debut on 14 April, as a second-half
substitute in a 2–0 win away to
Levante B, and played once more, starting the penultimate game of the season, a 2–1 defeat away at
Sant Andreu, in which his father scored the opening goal. In late October 2013, Pandiani and Walter returned to Uruguay to join
Primera División strugglers
Miramar Misiones, Pandiani was ineligible to play in the
Apertura, and he finally made his professional debut – under his father's captaincy – on the third matchday of the
Clausura, on 16 February 2014 away to
El Tanque Sisley. Miramar lost 1–0, and Pandiani failed to clear the ball that set up the goal for the hosts. He played once more before relegation was confirmed with five games still to play, and then started the remaining matches to bring his total appearances to seven. For the 2014–15 season, Pandiani returned to Spain and signed for Segunda B club
Marino de Luanco. He made his debut on 20 September as a very late substitute in a 2–2 draw at
Atlético Astorga, and made 13 league appearances over the season. and finished 15 points adrift at the
bottom of the division. Pandiani left Luanco at the end of the season and returned to Uruguay, where he trained with and was reported to have signed for
Canadian of the
Segunda División. Although expected to start the opening match of the season at the end of October, administrative issues related to international clearance prevented his appearance. A few days later, Spanish club
Masnou announced his arrival on a contract to the end of the 2015–16 season. He scored twice from 23
Tercera División appearances, mostly as a starter, before again returning to Uruguay. He re-signed for Miramar Misiones in September 2016, but played only three matches in the before signing definitively for Canadian for the , in which he was a first-team regular. Pandiani returned to Spanish football in January 2018, signing for Tercera División club
Real Avilés until the end of the season. He made 11 appearances before his contract expired, and then joined
Ħamrun Spartans of the
Maltese Premier League, where he played only oncestarting in the 2–1 defeat away to
Hibernians Pandiani played regularly as Avilés finished in 14th place, and signed for another year. By mid-season, wages were in arrears, the team was shipping goals and defensive changes were needed. Pandiani was out of favour as well as suffering from a groin injury, and on the last day of the transfer window he moved on to another Tercera club,
Navarro. He was only able to play four matches before the season was suspended because of the
COVID-19 pandemic. ==References==