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Fullstack Developer (React · Next.js · TypeScript · Node.js · Python)
Specializing in AppSec / IAM · Brasília, Brazil
Fullstack developer with ~2 years of production experience, building end-to-end applications with React/Next.js on the front end and Node.js/Python on the back end. Currently deepening my specialization in application security and identity (AppSec/IAM). It's not "one more technology" to me: it's a career direction, and I want to be the person who builds the system and secures it.
All of this (products, study, technical decisions) is documented and version-controlled inside FelpsXP, my personal tech ecosystem: a "digital organism" where every repository is one piece of a larger system that keeps leveling up. The architecture and decision-making behind it all is shared publicly in felpsxp-architecture: code excerpts, diagrams, and real proof of what works, from both private and public projects, without exposing sensitive data or compromising the source products.
Production axis: React · Next.js · TypeScript · Node.js · Python.
Specialization track: IAM/RBAC · Application Security · Authentication/Authorization.
Infrastructure I use day to day: PostgreSQL · Supabase · Vercel · Docker · n8n · Expo/React Native.
| Project | What it is | Stack |
|---|---|---|
| FelpsXP Hub | Portfolio and showcase for the FelpsXP ecosystem | Next.js, Vercel, Supabase |
| FelpsXP Platform | IAM/RBAC foundation (the technical base of my AppSec specialization) | Node.js, PostgreSQL |
| FelpsXP Finance | Multi-tenant personal finance app (mobile + web from one codebase), designed to consume Platform as its IAM provider | Expo Router, tRPC, PostgreSQL/Supabase (RLS), n8n |
| beecrowd-problem-solving | Algorithm and data structure solutions | C++, Python |
FelpsXP Platform and Finance are private products right now: their architecture, decisions, and code excerpts are documented individually, from macro to micro, inside felpsxp-architecture.
🛒 Coming soon: FelpsXP Smart Market List, a smart grocery list app for iOS and Android.
- Consolidating my job search as a fullstack developer (React/Next/Node/Python).
- Starting my AppSec/IAM specialization, with the goal of becoming the go-to internal reference for security and earning my first certification in the field.
- Documenting everything publicly inside FelpsXP Knowledge, currently in progress.
Every commit here is a line of XP in my own progression system. 🎮