The first contact was with a consultancy to which they outsourced the selection process.
If you pass their interview, they put you in touch with MELI people for another interview.
If that goes well, you move on to a technical interview, then an interview with the team, and finally an interview with HR to close the offer.
All of this is hypothetical because it varies greatly depending on how you get in. I know cases where they directly went to a technical interview and then HR because they were referred.
The following metrics were computed from 12 interview experiences for the Mercado Libre Software Developer role in Argentina.
Mercado Libre's interview process for their Desarrollador De Software roles in Argentina is very selective, failing most engineers who go through it.
Candidates reported having very good feelings for Mercado Libre's Software Developer interview process in Argentina.