Alda Rosa was born in Braga in 1936. She graduated in Painting in 1959 from the Higher School of Fine Arts in Lisbon and, between 1967 and 1970, completed a course in Art and Graphic Design at Ravensbourne College of Art and Design in England. She began her career as a designer in the studio of architects Duarte Nuno Simões and José Santa-Rita, where she also collaborated on interior design projects.
In 1965, she joined the Art and Industrial Architecture Nucleus (NAAI) of the National Institute of Industrial Research (INII), where she was part of the organizing committee for the first Portuguese Design Exhibitions, held in 1971 and 1973. She worked as an internal advisor at the Directorate-General for Quality (DGQ) and later at the Portuguese Quality Institute (IPQ). She was a member of the Installing Committee of the Portuguese Design Center (CPD), representing the Ministry of Industry. Additionally, she created the graphic department of the Cultural Institute of Macau (ICM), which she directed from 1987 to 1989. She was a founding member of the Portuguese Designers Association (APD), which she led between 1990 and 1993, and in 1990 she served as the APD delegate to the Bureau of European Designers Associations (BEDA). She was also a consultant for the Portuguese Design Center (CPD) and is a member of the Advisory Board of the Nogueira da Silva Museum in Braga.
Throughout her career, Alda Rosa devoted herself to graphic design for public institutions, where she was also responsible for organizing several competitions, serving as a jury member. Fascinated by art and culture, she began working as a freelance graphic designer in 1993, producing numerous exhibition catalogues and materials for museums across Portugal. She is recognized for her modernist and minimalist style, characterized by strong typographic elements and dynamic geometric forms. Her editorial work in the cultural and institutional sectors is particularly notable, as is her collaboration with publishers such as Estampa, Cosmos, Moraes, Plátano, Inapa, and Livros Horizonte, among others.