Senior React Frontend Developer

Description

**Company Description** Serasa Experian is Brazil's first and largest Datatech company. A leader in intelligence solutions for risk and opportunity analysis, focused on credit, authentication, and fraud prevention journeys. With cutting-edge technology, innovation, and top talent, it transforms risk uncertainty into the best decision—helping individuals achieve their dreams and enabling businesses of all sizes and sectors to thrive. We have 22\.000 people operating across 32 countries, and every day we invest in new technologies, talented professionals, and innovation to help all our customers maximize every opportunity. With corporate headquarters in Dublin, Ireland, Experian is listed on the London Stock Exchange (EXPN) and is a constituent of the FTSE 100\. **Job Description** We are seeking a passionate **Senior Frontend Developer** who loves building modern, high-performance, scalable, and accessible user interfaces. You will play a pivotal role in defining frontend architecture and evolving team practices, working strategically with product, design, and engineering teams to build high-impact experiences in an agile, results-driven environment. **Responsibilities** * Lead the development and evolution of web applications using React and its ecosystem. * Define and implement scalable, sustainable, and high-performance frontend architectures. * Translate business requirements and prototypes (Figma, etc.) into efficient, high-quality technical solutions. * Participate in technical decision-making, evaluating trade\-offs and proposing continuous improvements. * Ensure code quality through robust testing practices (unit, integration, and E2E). * Collaborate closely with backend teams to define API contracts and architecture. * Conduct code reviews, promote best practices, and mentor less experienced developers. * Identify and resolve performance bottlenecks and user experience issues. * Participate in and influence agile ceremonies, contributing to technical planning and refinement. * Promote engineering standards, code reuse, and the evolution of design systems. **Qualifications** * Advanced experience with React and its ecosystem (hooks, Context API, composition patterns, performance). * In-depth knowledge of Next.js (SSR, SSG, ISR, routing, and optimization). * Strong expertise in TypeScript for complex and scalable applications. * Advanced proficiency in HTML5, CSS3, and modern styling strategies (Tailwind, Styled Components, etc.). * Proven experience with state management (Redux, Zustand, Jotai or similar) and decoupled architectures. * Solid experience consuming and designing REST APIs (GraphQL experience is a plus). * Experience with React Query/TanStack Query or similar tools for asynchronous data handling. * Strong understanding of web performance (Core Web Vitals, code splitting, memoization, caching). * Experience with build and optimization tools (Vite, Webpack, Turbopack). * Proficiency in Git version control and collaborative best practices (PRs, trunk\-based development or Gitflow). * Solid experience with agile methodologies and proactive process improvement. **Differences** * Advanced experience with testing (Jest, React Testing Library, Cypress/Playwright). * Experience with frontend observability and monitoring (Sentry, Datadog, New Relic). * Practical knowledge of accessibility (WCAG) and inclusive development. * Experience building and maintaining design systems and component libraries (Storybook, Radix UI, Material UI). * Knowledge of frontend architecture (micro frontends, BFF, edge rendering). * Experience with CI/CD and frontend pipeline automation. * Experience in technical leadership, mentoring, or establishing engineering standards. **Additional Information** Serasa Experian is much more than you imagine. With a purpose to create a better future by expanding opportunities for individuals and businesses, we are over 4,000 people in Brazil, working across diverse teams and specialties. Here, every skill and form of diversity complements one another—you can work on what you love most. We are committed to building an inclusive culture and an environment where people can balance their careers with personal commitments and interests, prioritizing well\-being. We are deeply dedicated to being one of the country’s best and most innovative places to work—enabling incredible experiences and careers for our people. Our strong “people-first” approach is externally recognized through multiple market certifications: we were honored by Great Place To Work™ in 24 countries and received the international Top Employers certification, ranked among the best employers for young professionals, and hold a 4.6 rating on Glassdoor. Each recognition confirms we’re on the right path—creating an ever-better workplace for our talents. \#LI\-HIBRYD Experian Careers \- Creating a better tomorrow together Experian Careers \- Creating a better tomorrow together Find out what it's like to work for Experian by clicking here