Mateus R. Campos / Backend Developer
Available for backend opportunities
I build REST services with Java, Spring Boot, and Node.js, covering authentication, persistence, automated testing, and documentation. When the product calls for it, I also deliver the interface with React and Next.js.
01 / Request
POST /api/resource
02 / Security
JWT + roles
03 / Persistence
PostgreSQL
04 / Response
201 Created
Work you can inspect
Three projects showing security, data modeling, integrations, and operations in different contexts.
Production product
Web application for adapting resumes to specific job openings, with compatibility analysis, ATS-focused artifact generation, Java/Spring backend, PostgreSQL, and JWT authentication.
Backend API
E-commerce REST API with products, categories, users, orders, OAuth2/JWT authentication, role-based authorization, JPA/Hibernate persistence, and OpenAPI documentation.
Full-stack system
Full-stack deadline management system with JWT authentication, an admin dashboard, PostgreSQL, and real-time communication for operational follow-up.
How I build
A delivery sequence grounded in behavior, security, and maintainability.
I define resources, responsibilities, responses, and rules before coupling the implementation.
Authentication, authorization, validation, and persistence are treated as part of the design.
Automated tests and documentation protect critical flows and make change easier.
Containers, environment configuration, and actionable error reporting close the loop.
Next challenge
I am open to backend and full-stack opportunities in teams that value technical quality, collaboration, and continuous learning.
