 He debuted on Spanish television in 1960 as host of the newsmagazine "Carrusel".He subsequently hosted many other programs, finally becoming presenter of the interview program A fondo (1976–1981), in which he had the opportunity to interview Salvador Dalí, Jorge Luis Borges, Ernesto Sabato, Octavio Paz, Julio Cortázar, Camilo José Cela, Bernardo Bertolucci, Frederick Forsyth, Elia Kazan, Antonio Gala, Atahualpa Yupanqui, Francisco Umbral, Julio Iglesias and Silvio Fanti among others.Soler has received the most important Spanish awards for journalism, including the Premio Nacional de Radiodifusión (in 1961) and the Ondas Prize (in 1955, 1959, 1962, 1976, and 1999).