from Vitória, building everywhereVitória ↗

Senior Backend Engineer · Vitória, Brazil

I build software
for the real world.

I'm Félix — a backend / full-stack engineer building business-critical platforms, APIs, and integrations since 2013. I keep them reliable as organizations scale.

View résumé ↗

Featured work

Reusable foundations
for enterprise APIs.

Software should reduce cognitive load, not move complexity somewhere harder to see.

Open source · 7 modules + reference app v0.11.0 · Java 21 · Spring Boot 4.1

raava/framework

GitHub ↗

An opinionated, modular framework for teams that repeatedly solve the same enterprise API concerns while keeping their own domain model, services, mappers, and security rules.

HTTP contracts
Generic CRUD for JPA entities and external gateways, with response envelopes, pagination, JSON filters, sorting, and tracking IDs.
Security
JWT authentication, resource-level permissions, configurable OAuth2/OIDC providers, and Hibernate-based audit history.
Modular by design
Core, Web, Starter, Auth, External Auth, Audit, and Mail can be adopted separately; the example application connects the full stack.
Quick start ↗ Reference application ↗

Personal projects

A daily game built
from public data.

Populômetro turns Wikidata into a new population challenge every day.

Daily game · Live New country every day

Populômetro

A daily game where you estimate a country's population, using higher-or-lower clues until you get it right.

Country and population data are kept current through automated synchronization with Wikidata via SPARQL.

Vue.js · Java · PostgreSQL · Wikidata

Play today's challenge ↗

Engineering toolkit

Java at the core.
Broader experience around it.

CORE EXPERTISE

  • Java primary language
  • Spring Boot application platform
  • PostgreSQL data layer
  • REST APIs system contracts
  • Docker delivery runtime

BROAD EXPERIENCE

Backend
JPA / Hibernate, PHP, Laravel, Python, Django
Frontend
TypeScript, JavaScript, Angular, React
Data
MySQL, SQL Server
Tooling
CI/CD, Linux, Maven, Git
“I document decisions and trade-offs clearly, own software after delivery, and keep critical systems understandable.”

Experience & education

Public systems and research.
Building since 2013.

Professional work in education and government, alongside research in computer science and web engineering.

Professional experience 2013 — Now
  1. — returned

    Federal Institute of Espírito Santo IFES

    IT Analyst and Systems Developer

    Current
  2. —

    Administrative Council for Economic Defense CADE

    IT Analyst and Systems Developer

  3. — Now
    parallel research

    SIGEX Project

    Technical Researcher and Web Developer

  4. —

    Federal University of Rio Grande do Norte UFRN

    Web Developer · Polare Project

  5. —

    Infobase

    Systems Developer

Full experience ↗
Academic foundation UFES
M.Sc. —

Computer Science

Web Engineering

Research on the ontological representation and analysis of object-relational mapping frameworks.

NEMO Laboratory · Published research
B.Sc. —

Computer Science

Foundation in algorithms, data structures, databases, operating systems, networks, and software engineering.

NINFA Laboratory · Research & development
Education details ↗

Start a conversation

Let's talk about software
that needs to last.

I'm open to senior backend and full-stack opportunities with remote international teams.