Mariano began his career at Lautrec Saatchi & Saatchi during one of the golden moments of advertising in Argentina. After consecutive golds at Cannes in the late 1990s, he began a world tour with Saatchi that took him to New York, Toronto, Sydney and Paris.
During his 17 years with the agency he worked for Toyota, Sony, Procter & Gamble (Tide, Eukaneuba) General MIlls (Cheerios, Total), Tylenol, J & B, Beck’s Bier, Villavicencio and many other clients.
In 2009, back in his native Buenos Aires he co-founded Les Argentins, a creative outsourcing agency with an innovative model: it only worked for other ad agencies, delivering white label creative ideas. For ten years Les Argentins exported thousands of ideas to France, Mexico, Canada, Germany, and the US.
In 2020 he joined Grey Argentina as Creative Director for Borderless, exporting Argentine creativity but within WPP this time.
Since 2021 he is Executive Creative Director co-leading the Borderless operation. His duties include Worldwide and North American Creative lead for Haleon brands including Tums, Robitussin, Emergen-C, Sensodyne and Pronamel. He is also one of the heads of the WPP Haleon Global Creative Council.
His advertising work received over 150 local and international awards