Hello, My name is

Josenaldo Matos

With 20+ years in tech, I specialize in Java & JS (React, NextJS) web development. Explore my portfolio, read my blog, and come talk about your project!

Get in Touch

About Me

Howdy!

Hello! I'm Josenaldo, a technology enthusiast with over 20 years of experience. I love working with Java, JavaScript, React, and NextJS. I always strive to stay up-to-date. In my free time, I enjoy sharing my knowledge through my blog. Let's have a chat about technology and explore new opportunities together!

Java

JavaScript

TypeScript

Python

Spring

Spring Boot

Spring Security

Spring Data

Hibernate

JPA

JDBC

Node.js

Express

Django

Strapi

React

Next.js

MUI (Material UI)

React Admin

React Hook Form

Redux

Tan Stack Query

React Router

Bootstrap

Object-Oriented Programming

SOLID

Hexagonal Architecture

Clean Architecture

Domain-Driven Design

Design Patterns

Microservices

Event-Driven Architecture

CQRS

Event Sourcing

JUnit

Mockito

Jest

Pytest

TDD

Software Testing

MySQL

PostgreSQL

MongoDB

Oracle

SQL Server

SQL

Apache Kafka

RabbitMQ

REST

GraphQL

gRPC

Git

GitHub

Docker

Maven

CI/CD

Jenkins

GitHub Actions

HTML

CSS

Pandas

NumPy

Scrum

Kanban

Event Storming

Agile

AWS

Heroku

Vercel

Netlify

Jira

Trello

GitLab

Notion

Contentlayer

Vite

15/04/2023

Josenaldo Matos

Experience

MedEspecialista Platform (API + Admin + Frontend)

A multi-repository medical education platform I led from July 2024 to February 2026, modernizing architecture, delivery flow, and product capabilities across API, admin panel, and student-facing frontend.

More Visit

Workaround-Oriented Programming (Book)

An online book platform built with Next.js for publishing technical chapters in Markdown, with search, SEO, and continuous content delivery.

More Visit

Farofa Lampiao e Julieta

A signature recipe turned into a memorable portfolio artifact: a repeatable culinary product with intentional humor and strong personal branding.

More Visit

Learning Git and GitHub

A curated learning roadmap for Git and GitHub, combining Portuguese and English resources to help developers build practical version-control skills.

More Visit

Vite JavaScript React Minimal Template

A minimal React + Vite starter template with environment setup and standard scripts for fast project bootstrapping.

More Visit

MapEFI Platform

A full-stack platform with Java/Spring backend and Next.js 15 frontend, supported by ADRs, architecture standards, and product documentation for sustainable evolution.

More Visit

Web Development

Modern, accessible, and performant web apps with React and Next.js — from MVPs to production hardening.

Backend & APIs

Reliable APIs, integrations, and data flows (Java/Node.js), with pragmatic testing and observability.

Architecture & Tech Leadership

System design, tradeoff analysis, technical roadmaps, and helping teams ship consistently with good engineering practices.

Mentoring & Code Reviews

Pairing sessions, reviews, and coaching focused on clarity, maintainability, and building a strong developer mindset.

Let’s talk

Testimonials

Bugada

Gata

“Miau.”

Leão Lascado

Leão empalhado

“Não faço a mínima ideia de como vim parar aqui.”

Lesada

Gata

“Miau miaaaaaau! Fsssssst!”

Hello, My name is

Josenaldo Matos

About Me

Howdy!

Blog

The first draft of Programação Orientada a Gambiarra

Interfaces aren't villains: the problem isn't the interface, it's purposeless abstraction

Why am I still invisible?

Is learning coding really hard?

The return of the Jedi

Experience

Portfolio

Services

Web Development

Backend & APIs

Architecture & Tech Leadership

Mentoring & Code Reviews

Testimonials

Bugada

Leão Lascado

Lesada

Get in touch