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Fullstack developer building backend APIs, chat systems, and web services with TypeScript and Node.js.

backend APIs and web servicesreal-time communication systemsNode.js tooling and testingReact Native mobile developmentBrazilian APIs and integrationsdata persistence and databases

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Active 15d ago
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Ronaldo Junior

Top 15%
@itujo

Fullstack developer consistently shipping code across the stack. Works at Idea Maker on projects that solve real problems, part of the top 13% most active contributors on GitHub.

Rinha. I built a competition platform where developers stress-test their applications.

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