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!
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!Blog
The first draft of Programação Orientada a Gambiarra
A short update on my first complete draft, and what this book is really about.
Interfaces aren't villains
A technical and architectural analysis on the value of defining explicit contracts even when there's only one concrete implementation.
Why am I still invisible?
Why, despite being qualified, am I still invisible to the job market?
Is learning coding really hard?
Spoiler: Learn how to code isn't hard. Its just a lot of work. And we usually confuse these two concepts.
Portfolio
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.
An online book platform built with Next.js for publishing technical chapters in Markdown, with search, SEO, and continuous content delivery.
A signature recipe turned into a memorable portfolio artifact: a repeatable culinary product with intentional humor and strong personal branding.
A curated learning roadmap for Git and GitHub, combining Portuguese and English resources to help developers build practical version-control skills.
A minimal React + Vite starter template with environment setup and standard scripts for fast project bootstrapping.
A full-stack platform with Java/Spring backend and Next.js 15 frontend, supported by ADRs, architecture standards, and product documentation for sustainable evolution.
Services
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.
Testimonials
Bugada
Gata
“Miau.”
Leão Lascado
Leão empalhado
“Não faço a mínima ideia de como vim parar aqui.”
Lesada
Gata
“Miau miaaaaaau! Fsssssst!”