About CODE X

CODE X SERVIÇOS DE INFORMÁTICA LTDA is a software company registered in Brazil under CNPJ 38.541.384/0001-22. We build custom software and provide technology consulting for companies that need experienced engineering they can talk to directly.

The company was founded and is led by Rui Anderson Alves dos Santos, who has spent more than ten years building and operating production software — web platforms, APIs, cloud infrastructure and identity systems across Ruby on Rails, .NET, Go and TypeScript, deployed on AWS, Azure and Google Cloud. Client work is delivered by him directly, with trusted specialists brought in when a project calls for skills outside that range.

That structure is deliberate. Most companies that need serious engineering do not need a large team — they need one experienced engineer who understands the whole system and stays accountable for it. Staying small is what makes that possible.