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

CI&T
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Hybrid (Brazil)HomeofficePosted 1mo ago

About the role

Senior-Master Full-Stack Developer with strong expertise in React and Java (Spring Boot) to design, build, and support enterprise-scale web applications and microservices.

Responsibilities

  • 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.

Qualifications

  • 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; demonstrated 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.

Skills

Required:ReactJavaSpring BootMicroservicesSQL / MySQLSecurity (OAuth2, OIDC, JWT)On-call / Production supportCommunication & Problem Solving

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!
Last updated Oct 21, 2026. Interested? Apply on the company site.

About CI&T

Technology Transformation Specialists

A global technology consulting and digital transformation firm that combines human expertise with AI to develop innovative solutions.

Technology transformationAISoftware developmentCloud servicesDigital experienceData analyticsApplication modernizationConsulting
Company profileWebsite

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