In 1950, he joined the Association of Polish Artists and Designers (ZPAP), in 1963 – Fédération Internationale de l'Art Photographique, and in 1964 – Aliance Graphique International. He worked as an editor of the Przegląd Kulturalny (Cultural Review) weekly, and of the monthly magazines: Fotografia (Photography) – from 1953, and Architektura (Architecture) – from 1963. In 1963 he became an associate professor at the Warsaw Academy of Fine Arts, where he had been working as a lecturer at the Photography Design Workshop since 1960.
Zamecznik's works were exhibited in many countries outside of Poland: Canada (1960), Milan (1961), Paris (1961), São Paulo (1962 and 1963), Italy, (1964), Yugoslavia (1965), Sweden (1962), Munich (1965), and Moscow (1949). In 1964, in Ljubljana, he received the Golden Medal at the Biennial of Industrial Design for his posters for the Warsaw Autumn festival. He received many awards for lifetime achievements: in 1955, he received the Gold Cross of Merit, in 1956 – the Award of the Minister of Culture and of the Central Office of Cinematography, in 1960 – the Art Award of the Przegląd Kulturalny (Cultural Review), and in 1961 – Second Prize at an exhibition from the series Polish Visual Art on the 25th Anniversary of the People's Republic of Poland (Polskie Dzieło Plastyczne w XV-lecie PRL).
Wojciech Zamecznik died on 12th May 1967. His works were exhibited at the Warsaw Poster Biennale in 1968, which was also the year of the first retrospective of works by Zamecznik.