[Job-30394] Senior Fullstack Developer (Java / React), Brazil
Senior full-stack developer building and supporting enterprise-scale web applications with React on the frontend and Java 21/Spring Boot on the backend, including RESTful APIs, microservices, and production monitoring.
- Compensation
- Not disclosed
- Location
- Brazil
- Work setup
- Remote
- Seniority
- Senior
- Employment
- Not specified
- Experience
- Not specified
- Category
- Fullstack
- Posted
Skills
Must have
- Solid experience with full-stack development
- Strong hands-on experience with React, modern JavaScript (ES6+), DOM APIs, and JSON
- Proficient in backend development with Java and Spring Boot; recent hands-on experience required
- Experience with microservices and enterprise integration patterns
- Solid experience with RDBMS (MySQL or similar) and SQL
- Good understanding of web security standards including JWT, authentication, and other security concepts
- Excellent problem-solving, debugging, and communication skills
- Structured approach to problem-solving and clarity in communication
- Comfortable working in the EST time zone
- Production support experience, including application error handling and standard practices
Nice to have
- Familiarity with micro-frontend architecture and component libraries (e.g., Storybook, styled-components)
- Knowledge of event-driven architecture and Kafka
Full description
At CI&T, we help large enterprises transform the potential of AI into real business impact with AI Deployment, AI-native execution, and tech-integrated business solutions.
With 30 years of experience in technological transformation, we accelerate innovation with expertise in Agentic SDLC, Application modernization, Data & AI, Martech and Business strategy.
We are 8,000 CI&Ters across more than 25 countries, collaborating to build solutions with real impact. AI is already part of how we work, evolve, and innovate every day.
We’re looking for a talented Senior-Master Full-Stack Developer with strong expertise in React and Java (Spring Boot). You’ll play a crucial role in designing, building, and supporting enterprise-scale web applications and microservices that are performant, secure, and user-centric.
What You’ll Do:
-
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.
-
Create and maintain architecture, design, and system documentation.
-
Ensure code quality, performance, and security, including OAuth2, OIDC, and JWT.
-
Work with MySQL, Hibernate, Spring Data, and Spring Security.
-
Support production systems using Kibana and APM tools, and participate in on-call rotation when needed. Demonstrated experience in monitoring and troubleshooting applications is essential.
What We’re Looking For:
-
Solid experience with full-stack development.
-
Strong hands-on experience with React, modern JavaScript (ES6+), DOM APIs, and JSON.
-
Proficient in backend development with Java,(including old versions),and Spring Boot; recent hands-on experience is required.
-
Experience with microservices and enterprise integration patterns.
-
Solid experience with RDBMS (MySQL or similar) and SQL.
-
Good understanding of web security standards including JWT, authentication, and other security concepts.
-
Excellent problem-solving, debugging, and communication skills;