[1] He made his debut as a senior with CD Guadalajara, while being in charge of a youth school in Daganzo de Arriba.

[2] Dóniga was a manager of the Alevín squads of local sides RSD Alcalá and AD Complutense before joining Soto de Alcobendas CF as an assistant.

[3][4] Dóniga worked as a fitness coach in Alfaro's staff at Bolivian side CD Jorge Wilstermann[5] and Emirati club Al Wasl SC before being named Víctor Sánchez's assistant at Deportivo de La Coruña in 2015.

[11] On 12 June 2023, Dóniga was appointed as head coach of Liga Panameña de Fútbol club Sporting San Miguelito.

[12] The following 2 January, he was named manager of the El Salvador national football team, succeeding his compatriot Rubén de la Barrera, who had left for Primeira Liga club Vizela.