Sr. Fullstack Developer (React / Java / Node)

We are tech transformation specialists, uniting human expertise with AI to create scalable tech solutions.

With over 8,000 CI&Ters around the world, we’ve built partnerships with more than 1,000 clients during our 30 years of history. Artificial Intelligence is our reality.

We’re looking for a Senior Full-Stack Developer (7+ years) with strong experience in React and Java ( Spring Boot ), and familiarity with Node.js and GraphQL . You’ll design, build, and support enterprise-scale web applications and microservices that are performant, secure, and user‑centric.

What you’ll do

• Design, develop, unit test, and integrate fullstack application components.
• Build scalable web apps 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 in an Agile environment.
• Create and maintain architecture, design, and system documentation .
• Ensure code quality, performance, and security ( OAuth2 , OIDC , JWT ).
• Work with MySQL , Hibernate, Spring Data, and Spring Security.
• Support production systems using Kibana , APM tools , and participate in on‑call rotation when needed.

What we’re looking for:

• 7+ years of fullstack development experience.
• Strong hands‑on with React , modern JavaScript (ES6+), DOM APIs, JSON.
• Strong backend experience with Java (preferably Java 21) and Spring Boot .
• Experience with microservices and enterprise integration patterns.
• Solid RDBMS experience ( MySQL or similar) and SQL.
• Good understanding of web security standards ( OAuth2 , OIDC , JWT ).
• Excellent problem-solving, debugging, and communication skills.
• Comfortable working near EST time zone.

Nice to have:

• Experience with Node.js and GraphQL .
• Micro‑frontend architecture and component libraries ( Storybook , styled‑components).
• Event‑driven architecture and Kafka .
• Production support experience ( Kibana , APM , hotfixes).

Why join us:

• Work on high‑impact, customer‑facing products for leading global brands.
• Collaborate with talented teams across strategy, design, data, and engineering.
• Be part of a digital‑first culture focused on innovation, quality, and continuous improvement.

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.****