~/about
Hi, I'm Luan.
Frontend Engineer working mostly with TypeScript, React, Node.js, and micro-frontends. Over the last few years, my focus has been on making complex web apps run fast and scale well, with deep work on authentication systems and state management.
So, what is Hardened?
While my day-to-day is all about the frontend ecosystem, I built this space to document my deep dives into lower-level engineering—things like Golang, distributed systems, and application security. It’s my way of understanding the full picture, from what you see on the screen down to how things run under the hood.
Here you’ll find articles on:
- Concurrency patterns in Go
- Memory management and performance tuning
- Authentication architectures (OAuth2, OIDC, Keycloak)
- System design and failure modes
- Security hardening for web applications
When I’m not coding, I’m usually mentoring junior developers, building challenges to help them become better problem-solvers and write cleaner code.