Looking for a job

João Pedro User

@joopedrouser1

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I build full-stack products and corporate systems with Go, React, PostgreSQL, and scalable data processing.

Brazil

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What I'm looking for

I'm looking to build end-to-end products and corporate systems, contributing to architecture, backend and frontend delivery, data processing, testing, and technical decisions.

I'm building full-stack products and corporate systems at 3CON Consultoria e Sistemas, working across Go, React, Angular, PostgreSQL, and .NET.

For Raia Drogasil, I developed and evolved a Go mobile-app backend, including PostgreSQL modeling, Keycloak and JWT authentication, and unit and integration tests that reached 91% code coverage.

I built a Go ETL service that reduced processing time from roughly two and a half hours to 10 minutes through goroutines, channels, batch optimization, and refactored flows. I also resolved critical pipeline failures and added structured observability logs.

I've delivered full-stack features for B3 and served as the dedicated developer for a turnover-analysis SaaS MVP, shipping its main screens in about three weeks. I also built a distributed payment-processing architecture using Go, NestJS, Kafka, Docker, and asynchronous communication.

Experience

Work history, roles, and key accomplishments

Current

Desenvolvedor de Software (Aprendiz)

Current

3CON Consultoria e Sistemas

Jun 2025 - Present (1 year 3 months)

Desenvolveu back-end em Golang para aplicativo mobile da Raia Drogasil, incluindo modelagem de banco de dados PostgreSQL e autenticação com Keycloak e JWT. Implementou testes unitários e de integração com Go testing e SQLMock, alcançando 91% de cobertura de código.