Previously, he held different positions in different media and institutions, such as head of press for Real Club Deportivo de La Coruña,[6] editor and basketball narrator for José Mara García's team on Antena 3 Radio, head of sports for La Coruña and Santiago at Onda Cero, and later editor-in-chief of Don Balón and director of the website "Defensacentral.com".
[8] Shortly after a month, on February 10, 2014, he announced his departure to the other major private television group in the country, Mediaset España, to participate in the talk shows of Pedrerol's rival midnight sports program, "Tiki-Taka" on Energy, and as a contributor to "Deportes Cuatro".
[9] One of the reasons for Siro's signing with the Fuencarral group was the possibility of being the main narrator of Spain's matches at the 2014 World Cup, which the national team played as host, and at EuroBasket 2015.
He has participated in programs such as Out of the Box, by Outconsumer for Esportmaniacos;[17] he has worked on the Especial Por la Palma with Ibai,[18] in the special of the 2021 transfer market closing, in El Padel de las Estrellas,[3] in the broadcasting of the Ballon d'Or gala; among others.
[19] He directs an interview program, Gracias por Venir, in which he chats with all kinds of personalities, for example: José María García, Ibai, Antoni Daimiel, Luzu, Lendoiro; among others.