Frontend Engineer [Senior] Onboarding (Engenheiro/a Frontend Sênior) - São Paulo (Hybrid)

Ready to accelerate your career? Clara is the fastest-growing company in Latin America. We've built the leading solution for companies to make and manage all their payments. We already help over 20,000 large and growing businesses operate with agility and financial clarity through locally issued corporate cards, bill pay, financing, and a powerful B2B platform built for scale. Clara is backed by some of the most successful investors in the world, including top regional VCs like monashees, Kaszek, and Canary, and leading global funds like Notable Capital, Coatue, DST Global Partners, ICONIQ Growth, General Catalyst, Citi Ventures, SV Angel, Citius, Endeavor Catalyst, and Goldman Sachs - in addition to dozens of angel investors and local family offices. We’re building the financial infrastructure that powers high-performing organizations across the region. We invite you to join us if you want to be part of a fast-paced environment that will accelerate your career and support you to do some of the best work of your life alongside a passionate and committed team distributed across the Americas. What you'll do We’re building a talent pipeline for top-tier Senior Frontend Engineers who are eager to shape the future of user-facing experiences at Clara. If you're passionate about frontend architecture, modern React development, and seamless user interactions—and would like to be considered for future openings—this is the place to start. As a Senior Frontend Engineer , you’ll design and implement scalable web applications that are fast, secure, and visually consistent. You'll collaborate closely with product managers , designers , and backend engineers to build features that balance technical excellence with business impact. Your responsibilities will include: Building high-quality user interfaces using React , JavaScript , and TypeScript Designing reusable frontend components with a strong focus on performance and scalability Integrating with RESTful APIs and ensuring seamless backend communication Maintaining visual and functional consistency across multiple applications Writing tests with tools like Jest , React Testing Library , or Cypress Contributing to deployment and automation flows using Rspack , GitHub Actions , and CI/CD pipelines Participating in design reviews, code reviews, and mentoring teammates Who you are We’re looking for someone who meets the minimum requirements to be considered for the role. The preferred qualifications are a bonus, not a requirement. Must haves 5+ years of experience in frontend development , with a focus on React Strong proficiency in JavaScript , TypeScript , and component-based architecture Hands-on experience consuming RESTful APIs and working with testing frameworks Familiarity with Git , Agile methodologies ( Scrum , Kanban ), and modern development workflows Experience ensuring accessibility, responsiveness, and consistent styling across web applications Ability to mentor junior engineers and support team development Working proficiency in English Self-driven, impact-focused, and adaptable to change Nice to haves Experience with Node.js to enhance frontend-backend collaboration Familiarity with AWS services like Amplify , S3 , and CloudFront Knowledge of Material UI or similar design systems Understanding of OAuth , OpenAPI , and Swagger Background in secure or financial web application development Interest in using AI tools to accelerate UI development and testing Why join Clara At Clara, you’ll have the autonomy, speed, and support to make meaningful impact — not just on your team, but on how organizations are run across Latin America. Who we are We’re the leading B2B fintech for spend management in Latin America. Certified as one of the world's fastest-growing companies, a Great Place to Work , and a LinkedIn Top Startup . Passionate about making Latin America more prosperous and competitive. Constantl ... (truncated, view full listing at source)