d'Aubuisson's political career began in 1986 as Departmental Director of the Youth Sector for the Department of San Salvador's ARENA Party.

In 1991 d'Aubuisson was a member of the Municipal Board of San Salvador, and a Youth Sector Partner of the ARENA Party.

In 1994, he was advisor to the office of Deputy Minister of Transport and was also a member of the Departmental Assembly Joint San Salvador ARENA Party.

In the 2015 elections for mayors and deputies, d'Aubuisson ran for the mayorship of Santa Tecla under the ARENA Party Flag, defeating [5] the Frente Fabarundo Martí para la Liberación Nacional (FMLN) candidate Armando Flores.

His government has focused on strengthening and optimizing areas such as health, sports, social welfare, the economy, culture, and tourism.

The mayor and his municipal team have focused on developing comprehensive programs to address the needs of the people of Santa Tecla.

With Tecla App, a mobile application which was launched in late 2015, citizens can report any need for public services.