Alda Rosa was born in Braga in 1936. She graduated in Painting in 1959, at the Higher School of Fine Arts in Lisbon and, between 1967 and 1970, took a course in Art and Graphic Design, at Ravensbourne College of Art and Design, in England. She started her activity as a designer in the studio of architects Duarte Nuno Simões and José Santa-Rita, where she also collaborated on interior projects.
In 1965, she started working at the Art and Industrial Architecture Nucleus (NAAI) of the National Institute of Industrial Research (INII), in which she was part of the organizing committee of the first Portuguese Design Exhibitions, produced 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), as a representative of the Ministry of Industry. She created the graphic sector of the Cultural Institute of Macau (ICM), which she directed between 1987 and 1989. She was a founding partner of the Portuguese Designers Association (APD), which she directed between 1990 and 1993. In 1990, she was the APD delegate at the Bureau of European Designers Association (BEDA). She was 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 dedicated herself to graphic design for public entities, in which she was also responsible for organizing several competitions, integrating as a jury member. Fascinated by art and culture, from 1993, she started her activity as a freelance graphic designer, producing a series of catalogues for exhibitions of events for several Museums in Portugal. As a graphic designer, she is recognized for her modernist and minimalist style, marked by a strong typographic component and dynamic geometric shapes. Her editorial work in the cultural and institutional area is remarkable, as well as her collaboration with the publishers: Estampa, Cosmos, Moraes, Plátano, Inapa and Livros Horizonte, among others.