I'm Giancarlos.

Story

I started writing code for the web in 2015 — small sites, internal tools, the kind of work where you wear every hat. Self-taught, following curiosity from one topic to the next. That habit hasn't gone anywhere.

Specialty

My specialty is frontend at scale. I've spent close to 9 years at Crehana — I joined in 2017 as a Frontend Developer and grew into the role I have today: Principal Frontend Engineer on the platform team. Most of my work has revolved around three things: scaling React architectures for large organizations, improving real-world application performance (I took Lighthouse from below 7 to 80+ on the main e-commerce pages), and building the internal tooling the team uses to ship every day.

Beyond frontend

My technical curiosity doesn't stay put on the frontend. What's been pulling me lately is understanding what sits underneath the tools I use every day: bundlers, compilers, parsers, type checkers. That's why I've been spending time with Go and Rust — not just the languages themselves, but to get closer to the layers of the stack I usually consume from above.

Stack

Work

Hobby