Born in Isola della Scala, Veneto, Pomini started his professional career at Verona.

After graduating from Primavera under-20 reserve team in 2001, Pomini left for San Marino Calcio in co-ownership deal.

Pomini played 20 games in 2003–04 Serie C2, ahead promotion protagonist Filippo Spitoni.

Along with Nicolò Consolini, Gaetano Masucci and Marco Piccioni, they were the backbone of the squad to promote to Serie B in 2008.

[3] In the second season, Giaroli became the backup and Pomini played all four games in the promotion playoffs,[4][5][6] which Sassuolo was the winner.

He was confirmed as a reserve keeper for the club's 2018–19 campaign, with Posavec out on loan to Hajduk Split and Alberto Brignoli in as a replacement.