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Bruno Zeferino

@brunozeferino

Full Stack Developer at Stefanini, building workforce time-tracking features and modernizing legacy Java applications.

At Stefanini, I develop full-stack features for enterprise applications, including reusable React and TypeScript components for a workforce management application that supports employee time tracking.

I also refactor legacy Java and JSP code while preserving business functionality, and work with PostgreSQL CRUD operations and REST API integrations. I maintain Java applications deployed on IBM WebSphere.

Previously, I developed features and REST APIs at Gente Seguradora, contributed to an ERP database migration from Oracle to PostgreSQL at IADTEC, and worked on academic attendance and performance management systems at Núcleo de Processamento de Dados - UEM.

Experience

Work history, roles, and key accomplishments

Current

Full Stack Developer

Current

Stefanini

Oct 2022 - Present (4 years)

Developed full-stack features for enterprise applications using Java, React, TypeScript, PostgreSQL, JSP, and Apache Struts. Refactored legacy code and maintained applications on IBM WebSphere.

Java React TypeScript PostgreSQL JSP Apache Struts REST APIs Postman IBM Websphere

Full Stack Developer

Gente Seguradora

Aug 2021 - Aug 2022 (1 year)

Developed features for an internal platform using Java, Spring, Vue.js, and PostgreSQL. Designed and maintained REST APIs and created operational reports using JasperReports/iReport.

Java Spring Framework Vue.Js PostgreSQL REST APIs Jasper Reports IReport

Full Stack Developer

IADTEC

Jan 2020 - Aug 2021 (1 year 7 months)

Contributed to migration of an ERP database from Oracle to PostgreSQL. Developed backend functionality using Java and Spring Boot, frontend features using Angular, and maintained a React Native mobile application.

Java Spring Boot PostgreSQL Oracle Junit Angular Jasper Reports IReport React Native

Full Stack Developer

Núcleo de Processamento de Dados - UEM

Jul 2019 - Dec 2019 (5 months)

Developed features for an academic attendance and performance management system using Java, Hibernate, and ZK Framework. Implemented student record, grade management, and reporting functionality.

Java Hibernate ZK framework Jasper Reports IReport