Senior Software Engineer (React.js, TypeScript)

Job description

### Why Join Exadel We’re an AI-first global tech company with 25+ years of engineering leadership, 2,000+ team members, and 500+ active projects powering Fortune 500 clients, including HBO, Microsoft, Google, and Starbucks. From AI platforms to digital transformation, we partner with enterprise leaders to build what’s next. What powers it all? Our people are ambitious, collaborative, and constantly evolving. ### About the Client A leading global digital banking platform and one of the largest neobank in Latin America, headquartered in Brazil. The company provides a mobile-first suite of financial services—including credit cards, savings accounts, and investments—designed to eliminate bureaucracy and high fees. By leveraging advanced data analytics and a customer-centric digital infrastructure, the organization delivers transparent and accessible financial solutions to millions of users across Brazil, Mexico, and Colombia. ### What You’ll Do - Design, develop, and maintain reusable React components and Design System assets. - Build higher-order UI components, page templates, dashboards, forms, navigation systems, and global application layouts. - Define component APIs, standards, properties, and best practices to ensure consistency across multiple products. - Collaborate closely with UX and Product Design teams to translate designs into scalable frontend architecture. - Review, refactor, and productionize AI-generated or prototype code, ensuring maintainability, accessibility, performance, and reliability. - Implement packaging, versioning, release management, and CI/CD pipelines for Design System distribution. - Create comprehensive technical documentation for engineers and AI-assisted development tools. - Ensure compliance with accessibility (WCAG) standards, responsive design principles, and cross-browser compatibility. - Develop automated testing strategies including visual regression and snapshot testing. - Drive frontend engineering best practices, mentoring peers and raising the overall quality bar across teams. ### What You Bring - Senior-level experience developing applications using React and TypeScript. - Strong expertise in modern frontend architecture and component-based development. - Proven experience building, maintaining, or scaling Design Systems and component libraries. - Advanced knowledge of HTML, CSS, responsive design, layout techniques, and browser rendering. - Experience publishing reusable packages and managing versioning and release processes. - Strong understanding of component composition and abstraction patterns. - Experience implementing accessibility best practices (WCAG), keyboard navigation, and screen reader compatibility. - Ability to transform prototype or AI-generated code into scalable, production-quality solutions. - Experience with UI testing methodologies, including visual regression and snapshot testing. - Strong problem-solving skills with the ability to work independently and take end-to-end ownership of technical initiatives. ### Nice to have - Experience with monorepo tooling such as Turborepo or Nx. - Experience with modern build tools including Vite. - Familiarity with Ant Design or similar enterprise UI frameworks. - Experience using AI-assisted development tools such as Cursor, Claude, GitHub Copilot, or v0. - Experience with Next.js. - Familiarity with Tailwind CSS. - Experience working in consulting or enterprise-scale product environments. ### English level Intermediate English proficiency (B1+) or higher. **Work Type:** Hybrid **Location:** São Paulo, Brazil ### Legal & Hiring Information - Exadel is proud to be an Equal Opportunity Employer committed to inclusion across minority, gender identity, sexual orientation, disability, age, and more - Reasonable accommodations are available to enable individuals with disabilities to perform essential functions - Please note: this job description is not exhaustive. Duties and responsibilities may evolve based on business needs - Compensation details are shared with candidates at the early stage of the recruitment process. - The offer is not binding until a signed contract is in place. ### Your Benefits at Exadel Exadel benefits vary by location and contract type. Your recruiter will fill you in on the details. - International projects - In-office, hybrid, or remote flexibility - Medical healthcare - Recognition program - Ongoing learning & reimbursement - Well-being program - Team events & local benefits - Sports compensation - Referral bonuses - Top-tier equipment provision ### Exadel Culture We lead with trust, respect, and purpose. We believe in open dialogue, creative freedom, and mentorship that helps you grow, lead, and make a real difference. Ours is a culture where ideas are challenged, voices are heard, and your impact matters.