Loading...
Loading...
React
TypeScript
Next.js
JavaScript
React Native
Tailwind CSS
SassReact Hook FormZodi18n
Node.js
NestJS
GraphQLREST APIs
PHP
Git
Docker
Figma
JestNightwatchBill management system for my family's supermarket, designed to improve payment organization and tracking. It includes Google Sign-In, filtering, printing, and data import/export features.
"Move it" is a Pomodoro app that gives some tasks to be completed after the circle ends.
View project"30 days CSS" was a challenge to improve my CSS skills by creating something with this technology every day for 30 days.
View projectThis is my site where I put all the places I went, some photos, and things that I enjoyed in those places. I hope you like it.
View projectI'm a full stack software engineer with 7+ years of experience, currently
working on a microfrontend platform in React, Next.js and TypeScript, for
a ticketing system that serves 160+ college athletic programs, with
Node.js, NestJS and GraphQL on the backend.
I've spent most of my career on the frontend, but I've always cared about
understanding the full picture, not just the part in front of the user.
That's what pushed me from building interfaces to caring about
architecture, state, testing, and the pipelines that ship it all. Lately
that curiosity has extended into AI-assisted development: I build my own
Claude Code skills and wire them to MCP so I can work faster without
losing track of the decisions that actually matter.
Outside of client work, I take on freelance projects end to end — most
recently a desktop system for a local supermarket, built solo from the
database up.
Outside of work, I split my time between family, guitar, chess and the
occasional Rubik's Cube, the kind of stuff that has nothing to do with
code, which is exactly why I need it.
7+ years building production web apps end to end: React and Next.js on the frontend, Node.js and NestJS on the backend, with Claude Code and MCP built into the workflow.
Vitória da Conquista, Brazil · Remote
React · Next.js · TypeScript · Node.js · NestJS · GraphQL · AI Assister Development
ExperienceIndependent AI Researcher | Generative Models · Reinforcement Learning · Energy-Based Models
Managed Hemerson at Paciolan
"I had the pleasure of working with Hemerson for several years while he was a developer from FullStack Labs working with the engineering team I managed at Paciolan. Hemerson is a solid full-stack engineer with experience across both frontend and backend development. He worked with technologies including JavaScript, TypeScript, Node.js, React, MySQL, and AWS on enterprise ticketing applications covering areas such as inventory, event setup, consumer and operator ticketing, integrations, and modernization of legacy systems. During the time we worked together, Hemerson was dependable, technically capable, and easy to work with. He contributed consistently to the team, handled development and troubleshooting across different parts of the application stack, and collaborated well with other engineers. As our team began adopting AI-assisted development tools, Hemerson also adapted well to the changing development workflow and continued to deliver maintainable, production-quality code. I enjoyed working with Hemerson and would recommend him to teams looking for an experienced full-stack engineer who is reliable, adaptable, and comfortable working across modern web technologies and enterprise systems."
Sep 2026 · via LinkedIn
Desenvolvedor Full-Stack | Java Web | Spring, JSF, PrimeFaces, Hibernate, SQL, APIs REST
Worked with Hemerson on the same team (college)
"Tive o prazer de desenvolver vários projetos com Hemerson na faculdade, criamos aplicações em React.js, React Native, entre outras tantas tecnologias e sempre que não entendia algo, do conteúdo, perguntava para ele e sempre ele conseguia explicar de uma forma que tudo fazia sentido. Com certeza posso afirmar que Hemerson é um programador fora da curva que está sempre buscando o próximo nível e acima de tudo quando percebe que estamos com dificuldades faz questão de explicar quantas vezes for necessário até perceber que conseguimos entender. Além de possuir um excelente raciocínio lógico, é também um grande líder."
Feb 2023 · via LinkedIn
Software Engineer
Aug 2023 — Present
Contributing to the modernization of a legacy back-office system into a microfrontend-based event ticketing platform, working with React, Next.js, GraphQL, and NestJS. Responsible for feature development, complex form validation, automated E2E testing, QA, code reviews, and AI-assisted development workflows using Claude Code and MCP.
React · Next.js · TypeScript · NestJS · GraphQL · Jest · Nightwatch
Full Stack Developer
Jul 2023 — Present
End-to-end freelance projects alongside my main role, including a desktop invoice-management system for a local supermarket.
React · Electron · SQLite · Prisma · Google Auth
System Analyst
Jul 2019 — Aug 2023
Developed and maintained websites and web applications, primarily using the company's proprietary PLUS CMS, while contributing to legacy projects, code reviews, and developer onboarding.
React · JavaScript · AngularJS · PHP · React Native · Smarty · jQuery