[Job-30394] Senior Fullstack Developer (Java / React), Brazil

Design, develop, unit test, and integrate full-stack application components. Build scalable web applications using React on the frontend and Java 21 / Spring Boot on the backend. Implement RESTful APIs, microservices, and integrations with enterprise systems. Collaborate with UX/UI, product, architecture, and QA teams within an Agile environment.

Solid experience with full-stack development. Strong hands-on experience with React, modern JavaScript (ES6+), and backend development with Java and Spring Boot. Experience with microservices and enterprise integration patterns. Good understanding of web security standards including JWT and authentication.