Mariano Mayer serves as National Secretary for Entrepreneurs and Small & Medium Enterprises, which belongs to the Minister of Production and was previously appointed as the Head of the General Direction of Entrepreneurship of Buenos Aires City.
Since 2000 he has actively participated, as a lawyer, in start-ups, investment and sale of new companies, and has advised both entrepreneurs as well as funds.
He also teaches in several institutions dedicated to promote the entrepreneur activity in Argentina.
In September 2013 he was appointed as the Head of the General Direction of Entrepreneurship of Buenos Aires City, which belongs to the Undersecretary of Creative Economy, both established as part of the new "Innovation Plan" for the City. In December 2015 he was appointed as the National Secretary for Entrepreneurs and Small & Medium Enterprises, which belongs to the Minister of Production.