At eleven he began his professional career with the musical Os Sinos da Candelária, based on the massacre of street children in a church in Rio in 1993.

His training included two theater companies in Rio where he worked with classics from Brazilian and world theater; in 2003 and 2004 he was invited to participate as a guest sketch in the Circuito Carioca de Esquetes; in 2001, a show was selected for the "Fringe" show at the Curitiba Theater Festival; took numerous workshops and training courses in voice, body, interpretation, dance and singing with various professionals such as Amir Haddad, Luis Melo, Leila Mendes, Marilena Bibas, Juliana Carneiro da Cunha, Michel Bercovitch and Felipe Abreu in various institutions such as Uni-Rio, Casa de Arte das Laranjeiras, Studio Escola de Atores, among others.

He participated in two plays in a school dramatic arts group and won the "Best Actor of the Year" award at the graduation ceremony.

In 2003, lived Estêvão, an officer of the imperial guard who fell in love with Rosário (Mariana Ximenes), niece of Bento Gonçalves (Werner Schünemann) in A Casa das Sete Mulheres.

In 2007 he dubbed the Portuguese version of the character Linguini from the Walt Disney Pictures and Pixar animated film, Ratatouille.

For Edgar's composition, Thiago brushed his hair and frequented English tea houses, so that he could absorb the elegance required of him by the character at the beginning of the 20th century.

The character was known for performing the first kiss between a male homosexual couple in a Rede Globo soap opera, together with Mateus Solano.

[15][16] He was also announced as one of the protagonists of the Brazilian production of the rock opera American Idiot directed by Mauro Mendonça Filho.

At the same time, the actor had been invited to make a special appearance in the last chapters of the soap opera A Vida da Gente as Gabriel, and had even recorded some scenes for the character.