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Marcelo CambraiaMC
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Marcelo Cambraia

@marcelocambraia

Full Stack Developer at CGDF, maintaining Participa DF and implementing a RabbitMQ integration between two government systems.

Brazil
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At Controladoria-Geral do Distrito Federal (CGDF), I develop and maintain Participa DF, a critical government system with more than one million registered users. I work across its C# .NET back end and AngularJS and Angular front ends.

I designed and implemented an event-driven RabbitMQ integration from scratch between two government systems, with dedicated queues and dead-letter and retry strategies. I also evaluated the Transactional Outbox pattern.

For Participa DF, I implemented Gov.br single sign-on using OAuth 2.0, OpenID Connect, Authorization Code Flow, and PKCE. I also maintain People Check, an identity verification service using MongoDB, and the Super Busca search API for the DF Transparency Portal.

In personal projects, I built APABB App, a donations and volunteering platform with PIX integration, and MetaAssist, a systematic review and meta-analysis tool using AI to screen scientific studies. I completed a degree in Systems Analysis and Development at UniCEUB in 2026.

Experience

Work history, roles, and key accomplishments

CC
Current

Desenvolvedor Full Stack

Controladoria-Geral do Distrito Federal (CGDF)

Nov 2024 - Present (2 years)

Desenvolve e mantém o Participa DF, sistema crítico com mais de um milhão de usuários, em C# .NET com CQRS/MediatR, NHibernate, SQL Server e Angular. Projetou integração assíncrona via RabbitMQ, implementou integração com Gov.br via OAuth 2.0/OpenID Connect, e otimizou consultas SQL com Dapper.

Education

Degrees, certifications, and relevant coursework

UN

UniCEUB

Tecnólogo, Análise e Desenvolvimento de Sistemas

Completed a Tecnólogo degree in Análise e Desenvolvimento de Sistemas in 2026.

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