On 8 December 1958, at the age of 9, he embarked on his professional stage career as a child artist in the theatrical production Tuka Lagon (Because of You), under the direction and writing of Mog Joaquim.

During his time in Bombay, Viegas caught the attention of a family friend named Carlos when he was singing Konkani songs from Goan tiatrs.

Concerned about her son's involvement in the Bombay (now Mumbai) theater scene, Viegas's mother took action, requiring him to retum to Goa.

However, Viegas's passion for the performing arts could not be extinguished, and he continued his involvement in school-based singing and drama activities with the guidance of school authorities, including the principal, Fr.

In the period of his academic break, he was chosen by a popular director to star in a tiatr production called Konn Zait ti Ostori (Who is that Woman?

The directors engaged Viegas for his unique "secondary vocal quality", which he adeptly utilized to present the kantos (songs) during their stage performances.

In addition to his work in khell tiatr, Viegas mainly had a career as a tiatrist, performing alongside a wide range of well-known artists, such as C. Alvares, Anthony Mendes, A. R. Souza Ferrão, Remmie Colaço, Alfred Rose, Jacinto Vaz, Robin Vaz, J. P. Souzalin, Ophelia Cabral, Philomena Braz, Antonette Mendes, Anil Kumar, Joe Rose, Mike Mehta, F. Cardozo, Menino de Bandar, Comedian Ambe, Comedian Agostinho, Mario Menezes, and Chris-Meena, among others.

His repertoire spanned multiple genres, such as solo, duet, and trio pieces, and involved collaborations with several directors and producers.

[2] In addition to his work as a performer, Viegas was also a composer, creating over 400 songs, some of which were featured on national and regional broadcast outlets.

[2] On 27 April 2013, Viegas, aged 64, submitted a report to the Margao police, accusing two up-and-coming Konkani stage actors of assaulting him.

According to the complaint, the incident occurred on 23 April, at 7 pm, while anticipating the appearance of his theatrical ensemble at the KTC bus stand in Margao, Viegas was present.

Viegas made accusations of being subjected to verbal abuse and physical assault, including a slap from Fernandes and singer Francis de Tuem.

Viegas then made an accusation that Francis, upon his arrival, proceeded to forcefully push him to the ground, resulting in a physical altercation.

He stated that he suffered physical harm to his body and presented a medical report to law enforcement documenting his injuries.

Viegas' colleagues at the police station commended his role as a mentor within the younger generation and his prominence in the Konkani tiatr industry, while also expressing disapproval of the alleged assault.