At the age of 10 Gianetta took part in her first theatrical performance, albeit at an amateur level, in Sant'Agata di Puglia, where she spent her childhood.

[2] She began studying acting at the Teatro dei Limoni in Foggia and, at the age of 19, entered the Experimental Center of Cinematography in Rome.

[3] In 2014 Gianetta played a small role in the twenty-fifth episode of the ninth season of the series Don Matteo.

The same year she made her film debut with Worldly Girl, directed by Marco Danieli, in the role of Loretta.

[5] In 2018, from the eleventh season of Don Matteo and onwards,[6] she was chosen to play the Carabinieri captain Anna Olivieri, a role for the first time in the series assigned to a woman.