He previously served as Spain's ambassador to Japan, and as Secretary of State for the European Union.

He was a technical advisor in the Cabinet of the Minister of Foreign Affairs and in the General Subdirectorate of Industrial, Energy, Transportation and Communications Affairs, and advisory member in the Cabinet of the Secretary of State for Foreign Policy and in the Organizing Committee of the Spanish Presidency of the Council of the European Union.

He was the architect of the negotiation that led to the adoption of the rule concerning the blocking minority in the Council's votes in the EU Treaties.

Until 2 December 2016 he was an advisor in the Cabinet of the Presidency of the Government, with the position of Director of the Department of European Affairs and G20.

From October 2018 to February 2022 he had held the position of Ambassador Extraordinary and Plenipotentiary to Japan.