# [Job-30394] Senior Fullstack Developer (Java / React), Brazil at CI&T

[Job-30394] Senior Fullstack Developer (Java / React), Brazil at CI&T in Brazil. Remote. Posted August 28, 2026.

- Company: CI&T
- Location: Brazil
- Workplace: Remote
- Experience: 30+ years
- Posted: 2026-08-28
- Apply: https://jobs.lever.co/ciandt/22de5505-5f46-494d-9813-4b8d951a779e/apply
- Source: https://jobmagic.ai/jobs/job-30394-senior-fullstack-developer-java-react-brazil-cit-nq7myk

## Requirements

- 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;
- Candidates should demonstrate a structured approach to problem-solving and clarity in communication.
- Comfortable working in the EST time zone.
- Production support experience, including a strong understanding of application error handling and standard practices.

## 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; 

- Candidates should demonstrate a structured approach to problem-solving and clarity in communication.

- Comfortable working in the EST time zone.

- Production support experience, including a strong understanding of 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; experience is preferred.

#LI-TO1

**Our benefits:**
 
-Health and dental insurance
-Meal and food allowance
-Childcare assistance
-Extended paternity leave
-Partnership with gyms and health and wellness professionals via Wellhub (Gympass) TotalPass;
-Profit Sharing and Results Participation (PLR);
-Life insurance
-Continuous learning platform (CI&T University);
-Discount club
-Free online platform dedicated to physical, mental, and overall well-being
-Pregnancy and responsible parenting course
-Partnerships with online learning platforms
-Language learning platform
And many more!
 
More details about our benefits here: https://ciandt.com/br/pt-br/carreiras
 
At CI&T, inclusion starts at the first contact. If you are a person with a disability, it is important** to present your assessment during the selection process. ***See which data needs to be included in the report by clicking here*.This way, we can ensure the support and accommodations that you deserve. **If you do not yet have the assessment, don't worry: we can support you in obtaining it.**
 
We have a dedicated Health and Well-being team, inclusion specialists, and affinity groups who will be with you at every stage. Count on us to make this journey side by side.