Senior React Developer

CI&T; Brasil; Remote; BRL 180,000 - 300,000; Full time

Benefits offered by this job

Health and dental insurance

Meal allowance

Childcare assistance

Paternity leave

Wellness programs

Profit sharing

Life insurance

Learning platform

Gym partnerships

Job summary

CI&T is seeking a Senior React Developer to lead front-end initiatives for an international client. You will build scalable web apps using React 18, manage state with Redux, and optimize performance with Vite.

Collaboration with cross-functional teams worldwide is essential, with a strong emphasis on accessibility and clean, scalable code. You will work with distributed teams, so advanced English communication is required, and mentorship will be part of your responsibilities in a fast-paced,

Qualifications

• 5+ years of frontend development experience with modern tech stacks.
• Strong React 18 and ES6+ expertise with clean code practices.
• State management using Redux (or Redux Toolkit).
• Experience with Vite and modern build tooling.
• Solid HTML5/CSS3 knowledge and responsive design skills.
• Advanced/Fluent English communication for international collaboration.

Responsibilities

• Architect, develop, and maintain high-quality front-end apps using React 18.
• Manage application state with Redux; optimize for performance.
• Collaborate with Product, Design, and Backend teams across borders.
• Champion accessible, component-driven design and code quality.
• Participate in Agile ceremonies and mentor teammates.

Skills

React 18

JavaScript (ES6+)

Redux

Vite

HTML5

CSS3

TypeScript

Next.js

Tools

Jest

React Testing Library

CI/CD

AWS/Azure/GCP

Job 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 are seeking an experienced Senior React Developer to join a fast-paced, high-impact global team. In this role, you will lead front-end development initiatives for an international client, building scalable, modern, and high-performance web applications.

Because you will work directly with distributed cross-functional teams around the world, good English communication skills and a collaborative mindset are critical to your success.

Key Responsibilities

• Architect, develop, and maintain high-quality, responsive front-end applications using React 18 and modern JavaScript.
• Design and manage application state using Redux and leverage modern build tools like Vite for optimized performance.
• Collaborate closely with Product Managers, Designers, and Backend Engineers across international teams to turn complex requirements into smooth user experiences.
• Champion clean code, component-driven design, accessibility, and performance optimization.
• Actively participate in Agile ceremonies, technical discussions, and code reviews, providing mentorship to team members.

Required Qualifications

• Seniority & Experience: 5+ years of software development experience with a strong focus on modern front-end technologies.
• Core Technical Stack:
  • Hands-on expertise with React 18 and modern JavaScript (ES6+).
  • State management proficiency using Redux (or Redux Toolkit).
  • Build tools experience with Vite.
  • Solid foundations in HTML5 and CSS3 (responsive design, modern layouts, styling frameworks).
• Communication & Idiom: Advanced/Fluent English (written and spoken) with the confidence to articulate technical concepts clearly to non-technical and international stakeholders.

Nice to Have

• Experience with TypeScript, Next.js, or testing libraries (Jest, React Testing Library).
• Familiarity with CI/CD pipelines, automated deployments, and cloud platforms (AWS, Azure, GCP).
• Prior experience in distributed, multicultural remote environments.

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.