I've been working with Ruby since the early 2000s — before it was fashionable, before Rails made it mainstream, and long before most of the ecosystem we know today existed.

Over the past 20+ years I've trained developers across dozens of companies, delivered talks in the Ruby community, contributed to open source projects, and built production systems across a wide range of industries. The kind of experience that doesn't come from reading documentation — it comes from being in the trenches when things break, when requirements change, and when the language itself evolves under your feet.

I'm also the author of the first Ruby book ever published in Brazil, which I've maintained and updated continuously since it launched — not as a side project, but as a professional commitment to the community that trusted me.