Software Engineer | Cybersecurity Analyst
Building modern, performant web applications with a focus on security, scalability, and user experience.
14+ Certifications
5 Years learning
6 Projects
4 Languages spoken
What I do
Most teams bolt security on at the end. I build it in from the first line of code, so what ships both works and can be trusted.
Full-stack web applications, AI integrations and process automation — fast, maintainable and secure by default.
Defensive, hands-on security: understanding how systems are attacked so they can be monitored, hardened and trusted.
It's a constraint that shapes every decision, from input validation to deployment.
The best UI is the one the user doesn't notice — intuitive enough to feel invisible.
42 Luanda's peer-to-peer model taught me to build with people, not around them.
Featured projects
Real systems solving real problems — from school timetabling to security operations.
A school scheduling system that eliminates manual timetable conflicts.
A school scheduling system that eliminates manual timetable conflicts.
A simulated security operations center for log analysis, threat detection, and incident response training.
A simulated security operations center for log analysis, threat detection, and incident response training.
Production telecom platform with an AI assistant built on 7 LLM providers, admin dashboard and authentication.
Production telecom platform with an AI assistant built on 7 LLM providers, admin dashboard and authentication.
About
Software engineer and cybersecurity analyst trained at 42 Luanda. I build systems you can trust, where development and security intersect in every line of code.
Latest writing
Practical write-ups on securing, shipping and designing software.
Lessons learned replacing AI-generated aesthetics with intentional, flat design tokens.
A practical guide to authentication, CSP headers, and rate limiting in modern Next.js apps.
How I structure multi-service Docker environments for school infrastructure projects.
I help build secure, performant web applications from concept to deployment.
or email info@lrafael.tech