Senior Full Stack Developer, Brazil
Confirmed on the employer's own hiring board on Nov 14, 2026. First seen by Alion on Nov 11, 2026. CI&T scores A on the Alion truth index.
We are looking for a Senior Full Stack + iOS Developer to join our engineering team and contribute to the development and evolution of modern web and mobile applications.
In this role, you will work across backend, frontend, and iOS development, building scalable services, responsive user interfaces, and mobile experiences. You will contribute to architectural decisions, API design, and engineering best practices while collaborating with cross-functional teams to deliver high-quality, secure, and maintainable solutions.
Requirements
Strong professional experience in full-stack software development.
Solid proficiency in Java, Spring Boot, and Java microservices.
Hands-on experience with React, Node.js, and TypeScript/JavaScript.
Professional experience developing iOS applications using Swift and Xcode.
Experience designing and developing REST APIs and backend integration patterns.
Good understanding of software architecture principles, particularly Hexagonal Architecture and CQRS.
Experience with React Microfrontends and modern frontend development practices.
Knowledge of relational databases, particularly MariaDB and PostgreSQL, and experience with Spring Data JPA.
Experience implementing automated testing strategies, including unit, integration, and E2E testing.
Familiarity with testing tools such as JUnit 5, Mockito, AssertJ, Jest, React Testing Library, Cypress, Playwright, or Karate.
Understanding of Docker and Kubernetes fundamentals.
Experience with Git and collaborative development workflows, including Git Flow or Trunk-Based Development.
Familiarity with CI/CD pipelines using GitHub Actions and code quality tools such as SonarCloud.
Knowledge of application monitoring and observability practices.
Strong problem-solving skills, attention to code quality, and ability to collaborate with distributed teams.
Nice to Have
Experience with event-driven architectures and messaging platforms such as Kafka.
Knowledge of mutation testing tools such as PIT or StrykerJS.
Experience with service virtualization tools such as TrafficParrot.
Familiarity with Microsoft Azure cloud services.
Experience with Azure Application Insights and other monitoring solutions.
Knowledge of the Sewing Design System.
Experience implementing internationalization and localization across multiple languages, including Spanish, English, and Portuguese.
Experience with data visualization libraries and charting solutions.
Familiarity with advanced distributed system patterns and microservices architecture.