Open to opportunities

Weiner Silva

@weinersilva

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Full Stack Software Engineer specializing in scalable Java and modern web applications.

Brazil

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What I'm looking for

I seek a collaborative, agile team role where I can modernize legacy systems, improve performance, and deliver high-quality, scalable software while continuing technical growth.

I am a results-driven Full Stack Software Engineer with over 10 years building robust, scalable applications across financial services, government and enterprise environments. I specialize in Java (8–21), Spring Boot, Angular, React, and backend integrations using Kafka and RabbitMQ.

I have a proven track record in legacy system migration, performance optimization, and raising code quality through testing and refactoring—including projects that migrated .NET systems to Java/React and increased test coverage above 90%.

I follow agile practices, value clean maintainable code and SOLID principles, and continuously learn new technologies such as cloud services (AWS, GCP, Azure), containerization, and CI/CD to deliver stable, high-impact solutions.

Experience

Work history, roles, and key accomplishments

Current

System Development Analyst

Current

CI&T Tecnologia

Aug 2024 - Present (1 year 5 months)

Provide production support and incident resolution for a core Bradesco system, identifying and fixing bugs to improve stability and performance while collaborating on system improvements using agile practices.

Spring Boot Angular GitHub Actions ArgoCD Dynatrace REST Scrum

System Development Analyst

Mirante Tecnologia Ltda

Jan 2023 - Jan 2024 (1 year)

Developed and refactored features for Sicoob's Rural Credit systems, modernizing legacy code and raising unit test coverage above 90% to improve reliability and maintainability.

Spring Boot Junit Mockito MariaDB Gitlab Jenkins SonarQube

System Development Analyst

Redemob

Jul 2022 - Nov 2022 (4 months)

Contributed to new functionality and maintenance for the city's public transport system, supporting legacy systems to ensure high availability for the upcoming transport model launch.

Java 8 Spring Boot Junit Mockito Oracle Gitlab SOAP Scrum

System Development Analyst

Secretaria de Estado da Administração

Nov 2021 - Jun 2022 (7 months)

Developed and maintained systems for state asset management and HR integration (RHNet), implementing APIs and ensuring alignment with e-Social requirements to improve state application interoperability.

Java 8 Spring Boot JSF REST Oracle Gitlab Junit Mockito

Information System Programmer

Equipe de Anestesia Ltda

Aug 2014 - Oct 2021 (7 years 2 months)

Solely developed a modern financial and accounting system replacing a legacy Clipper5 app and provided ongoing system support, server configuration, and management reporting to improve operational efficiency.