Backend Developer · Data & BI Analyst · Computer Scientist
I build reliable APIs, analytical solutions, and automations that turn operational problems into useful software.
Brazil · Open to junior opportunities in backend development, data, BI, and analytics
I am a Computer Science graduate and Mechatronics Engineering undergraduate with hands-on experience in industrial maintenance analytics. I have worked with operational data from SAP to build dashboards, indicators, and automated routines using Python, Power BI, Power Query, and Excel.
My software development work is centered on Java and Spring Boot: REST APIs, authentication and authorization, relational databases, automated tests, and containerized environments. I also use Python and SQL for data preparation, analysis, and process automation.
A full-stack platform for students, teachers, administrators, and staff, with role-specific dashboards and workflows.
- Built a secured REST API with JWT authentication and role-based access control.
- Modeled courses, students, enrollments, users, and permissions with a layered architecture.
- Developed protected frontend routes, interactive dashboards, forms, and real-time notifications.
- Stack: Java 17, Spring Boot, Spring Security, PostgreSQL, JPA/Hibernate, Docker, React, TypeScript, Vite, React Query, WebSockets.
Backend repository · Frontend repository
A clinical and administrative patient-management backend inspired by the mental-health care case study from Ian Sommerville's Software Engineering.
- Designed a domain model for patients, professionals, consultations, care plans, alerts, and facilities.
- Implemented security, validation, database migrations, API documentation, and automated tests.
- Stack: Java 21, Spring Boot 3.5, Spring Security, JWT, PostgreSQL, Flyway, JPA/Hibernate, OpenAPI, JUnit, Testcontainers.
A digital-banking backend that models customers, accounts, transactions, cards, invoices, loans, investments, and insurance products.
- Applied layered architecture, DTO mapping, validation, authentication, and database versioning.
- Used domain modeling and patterns such as Strategy to keep financial behaviors explicit and extensible.
- Stack: Java 21, Spring Boot, Spring Security, JWT, MySQL, JPA/Hibernate, Flyway, MapStruct, OpenAPI, JUnit, Mockito.
Some of my strongest data work is private because it uses corporate operational data. In an industrial maintenance environment, I:
- Built Power BI dashboards and operational indicators from SAP and Excel data.
- Analyzed corrective, preventive, and predictive maintenance information.
- Automated recurring reports and data-processing routines with Python, Power Query, and Excel.
- Supported decisions involving backlog, recurrence, productivity, and asset performance.
| Area | Technologies |
|---|---|
| Backend | Java, Spring Boot, REST APIs, Spring Security, JWT, JPA/Hibernate, Maven |
| Data & BI | Python, Pandas, NumPy, scikit-learn, Power BI, Power Query, Excel |
| Databases | PostgreSQL, MySQL, SQLite, SQL |
| Testing | JUnit, Mockito, Testcontainers |
| Frontend | TypeScript, JavaScript, React, HTML, CSS/SASS |
| Tools | Docker, Docker Compose, Git, GitHub, Linux, SAP |
If you are hiring for a junior backend, data, BI, or operational analytics role, I would be glad to discuss how I can contribute.