[Job-30394] Senior Fullstack Developer (Java / React), Brazil
Ci&T · Remoto, BR
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.