# Gabriel Barbosa

Gabriel Barbosa is a remote worker on Himalayas, Desenvolvedor Backend & Full Stack at ZDoc, based in Brazil.

Source: https://himalayas.app/@gabrielbarbosa4

```text
Backend Developer at ZDoc building Java APIs for public health systems and reducing SURE network traffic by 80%.
```

| Detail | Value |
| --- | --- |
| Availability | Looking for a job |
| Location | Brazil |
| Authorized to work in | Brazil |
| Salary expectations | 40k+ BRL |
| Job categories | Backend Engineer, Full Stack Developer |
| Skills | Java, Spring Boot, REST APIs, Microservices, RabbitMQ, Event Driven Architecture, Spring Data JPA, JPQL, SQL, JUnit5, Mockito, NodeJS, ExpressJS, PostgreSQL, Sequelize |
| LinkedIn | https://linkedin.com/in/gabriel-barbosa07 |
| GitHub | https://github.com/gbatistaa |

## What I'm looking for

```text
I’m looking to work in technically complex environments, contributing to scalable, secure, high-impact solutions.
```

## About

```text
At ZDoc, I develop and refactor Java REST APIs for public health systems including SURE, Uno ID, and Sinfros. I also built a standalone password recovery service in Spring Boot using RabbitMQ.

For Sinfros and SURE, I refactored backend operations and rewrote SQL queries, reducing network traffic by 80%. I added unit tests for critical business rules with JUnit5 and Mockito.

Previously, as a Backend / Full Stack Development Intern at Revolution IT Services, I developed and maintained Node.js REST APIs for a B2B SaaS ecosystem. I implemented role-based access control and integrated real-time services using WebSockets.

At SofTeam, I built Node.js and Express APIs with JWT authentication and SQLite data modeling, and collaborated on desktop pharmacy-management software using Electron. I’m looking to contribute to technically complex environments and build scalable, secure, high-impact solutions.
```

## Experience

### Desenvolvedor Backend & Full Stack (current)

ZDoc. Mar 2026 - Present

```text
Developed and refactored REST APIs in Java for public health systems, designed a microservice for password recovery using Spring Boot and RabbitMQ, implemented unit tests with JUnit5 and Mockito, and optimized database queries reducing network traffic by 80%.
```

Skills: Java, Spring-Boot, Spring-Data-JPA, JPQL, RabbitMQ, JavaMailSender, JUnit5, Mockito, SQL, SASS, Full-Stack

### Estagiário em Desenvolvimento Backend / Full Stack

Revolution IT Services. Oct 2025 - Mar 2026

```text
Developed and maintained RESTful APIs for a B2B SaaS ecosystem in Node.js, modeled data and optimized queries with PostgreSQL and Sequelize, implemented RBAC for multitenant isolation, and integrated real-time services using WebSockets.
```

Skills: NodeJS, ExpressJS, PostgreSQL, Sequelize, RBAC, WebSockets, REST-APIs

### Desenvolvedor Full Stack

SofTeam. Dec 2024 - Dec 2025

```text
Built complete APIs in Node.js/Express with JWT authentication and session control, participated in full development cycle, and contributed to a desktop pharmacy management software using Electron.
```

Skills: NodeJS, ExpressJS, JWT, SQLite, Electron, ESLint, Prettier

## Education

### Universidade Federal de Sergipe

Bachelor's degree, Computer Science. 2023 - Present

```text
Pursuing a Bachelor's degree in Computer Science, expected to graduate in 2027.
```

## Tech stack

- GitHub
- GitLab
- ESLint
- Prettier
- Electron
- Sass
- PostgreSQL
- SQLite
- Node.js
- Spring Boot
- Next.js
- Tailwind CSS
- Jira
- Java
- RabbitMQ
- ExpressJS
- Sequelize
- Hibernate
- Socket.IO
- Mockito
- Git
- Docker
- SQL
- Testcontainers
- REST APIs

To contact Gabriel, message them from this profile with a Himalayas employer account: [Hire on Himalayas](https://himalayas.app/hire).

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