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One of the activities involved splitting into groups to imagine what OLX would look like in the future and present it. After each presenttion, we were asked to imagine a post-futur…

It was a great reminder that, in data science, the smartest thing you can do isn’t always building a new algorithm: It’s helping people make slightly better decisions at the right …

This is the story of how we improved the search experience at OLX Brasil in early 2024 by introducing semantic search. All major players in search are investing in hybrid approache…

This brief introduction about myself is meant to provide a clearer response to the developers who often ask me how to become a hybrid developer like me. The answer is not straightf…

Sometimes a traditional feature brings more value than a machine learning model, and sometimes we need a machine learning model to realize this. This text tells the story of a grea…

This article explains Podium, a search relevance algorithm created by the OLX Brazil Search team to replace the globally renowned BM25. It resulted in increased clicks, contact int…

I'm playing Zelda Tears of The Kingdon... almost infinite side quests..

This is the story of how a simple mitigation solution led us to discover the root cause of a difficult-to-replicate bug, originating from a lack of knowledge about a technology.

Another politician threatened to sue me through a Facebook message if I didn’t take down his profile because it would be defamation. The interesting thing is that this politician w…

This is the story of how I invented Ajax (Asynchronous JavaScript + XML) despite it already existing, and how a junior developer would greatly benefit from mentorship at the beginn…

This is the story of how we managed to prevent “data collect” fraud through a data collection!