Sánchez made his debut for the senior national team in November 2014 in a test match against Great Britain. Initially, he was not selected for the 2018 World Cup but he replaced Miquel Delas later in the tournament who had to withdrew injured. At the 2019 EuroHockey Championship, he won his first medal with the national team as they finished second. On 25 May 2021, he was selected in the squad for the 2021 EuroHockey Championship.