Before turning entirely to acting, Guirao held various jobs as an electrician of a business video games, cadet, waiter and finally in advertising as a model.

Guirao studied acting at the General San Martín Cultural Center and since then has followed a lot of courses of interpretation.

He began working as a model for graphics and TV commercials and acted in parallel in juvenile series such as Rebelde Way, and in Paraíso Rock.

Between 2006 and 2007, Guirao was the leading man of Araceli González in the Argentine series Amas de casa desesperadas.

A year later he starred with Italian actress Vittoria Puccini in Violetta [it], which is based on the novel Lady of the camellias by Alexandre Dumas.