[3][4] Like his father and his grandfather, Errázuriz studied civil engineering at the Pontifical Catholic University of Chile (PUC), where he obtained a specialization in hydraulics.

In 1990s, he worked in various local and international subsidiaries of the generator Endesa, from where he was sent to LANChile, at the request of then senator Sebastián Piñera, who was one of the airline's controlling shareholders.

As an executive of this company, he separated the business areas in cargo and passenger transport, process that incidentally allowed modernizing and making the ticket acquisition system more flexible.

During his spell number portability was implemented and the start of the process of collection's end for long-distance calls into the country.

On 8 April 2014, he joined the National Urban Development Council, created by Socialist President Michelle Bachelet (centre-left).