Top Front End Developer Jobs in Brazil

Own and enhance the Expo/React Native mobile app, focusing on native integration (JSI/TurboModules), performance-sensitive flows, push notifications, deep linking, CI/CD (EAS), testing, and crash triage. Collaborate with backend and design teams and debug issues across the JS/native boundary.

Build mobile-first, responsive Vue.js frontends focused on performance and UX. Contribute to backend management UIs, participate in code reviews and team ceremonies, and mentor junior engineers.

Lead frontend development for web applications, design scalable user-centric features, improve engineering standards and tooling, scope and drive large technical projects, mentor engineers, and align cross-functional teams to ship high-quality product experiences.

Lead frontend development for web applications: architect scalable frontend platforms, build reusable component libraries, collaborate with backend, design and optimize performance and responsiveness, implement state management and caching for high-data apps, and maintain testing and frontend architecture standards.

Build and enhance web application features, architect a scalable frontend platform, create a reusable component library, collaborate with backend and design teams, and optimize performance and responsiveness across devices.

Build and maintain scalable, high-performance frontend applications using React and Next.js. Collaborate with Product, Design, and Backend teams to integrate APIs, ensure responsive and accessible UIs, participate in architecture and code reviews, and optimize frontend performance and scalability for a global AI-native FinTech SaaS platform.

Lead the Pro team to design, develop, and deliver frontend systems for Kraken's trading interface, focusing on user experience and mentoring engineers.

The Staff/Lead Fullstack Engineer will enhance the Mimica Webapp by architecting scalable UI components, managing large datasets, and optimizing performance while collaborating with cross-functional teams.

Develop and maintain enterprise Drupal themes and front-end components, build responsive sites, landing pages and email templates, collaborate with marketing and stakeholders, ensure accessibility, performance and SEO, support marketing tech, and manage projects through full development lifecycle.

Develop, maintain, and enhance React-based frontend applications; integrate RESTful APIs; implement automated tests; participate in code reviews; collaborate with cross-functional teams and CI/CD pipelines to deliver high-quality software.

Build and evolve a modular microfrontend portal using Vue 3 and TypeScript. Integrate REST APIs and BFFs, implement observability and performance monitoring, maintain the Design System, write component and end-to-end tests, and collaborate with cross-functional teams to deliver secure, maintainable, high-performance features.

Design and implement developer-facing UI from Figma to production using Hotwire (Turbo + Stimulus) and ViewComponents. Own the dashboard, API playgrounds, docs, marketing site, and data visualization. Optimize performance and bundle size, maintain a coherent component system, and ship polished, production-ready front-end with tests and CI/CD.

Implement and maintain web applications using JavaScript, ReactJS, and related technologies. Participate in all development phases and troubleshoot production issues.

Develop and maintain responsive web applications, implement component architectures, and ensure accessibility while collaborating in Agile teams.

Design and maintain secure, resilient Java/Spring backend services for high-volume payments; optimize data pipelines and async processing; build and integrate React frontends and APIs; use AI tools across development; lead code/system design reviews and mentor engineers; implement observability and CI/CD for reliable payment integrations.

Develop and maintain frontend applications using React.js and GraphQL, collaborating with backend developers and designers, optimizing for performance.

As a Frontend Engineer, you'll develop high-performance applications using React Native and React.js, collaborating with cross-functional teams to meet client needs.

As a Senior Frontend Engineer, you will design and build web applications, owning major UI projects, collaborating with cross-functional teams, and optimizing performance for a seamless user experience.

As a Staff Fullstack Software Engineer, lead technical strategy, system evolution, operational excellence, and mentor teams while promoting wellbeing at work.

Design and implement component-based, data-driven frontends using React and TypeScript. Transform and normalize backend/analytics data, manage state with Redux, produce pixel-perfect UIs from designs, follow project standards, work ticket-driven (Azure DevOps/Jira), participate in code reviews, and own features end-to-end including QA and bug fixes.

Build responsive, accessible Next.js and React applications for marketing storefronts and clinical platforms. Implement Figma designs, optimize Core Web Vitals, manage client-side state, integrate REST and real-time services, and create AI-powered conversational interfaces while following HIPAA/SOC2 security practices.

Build and maintain high-performance, accessible React web applications; create reusable components and scalable frontend architectures; integrate with REST and GraphQL backends; optimize for speed and SEO; collaborate with designers and cross-functional teams; participate in code reviews and architecture discussions.

Lead front-end engineer on the Mapper Team building scalable data-visualization and real-time multi-user front-end features. Own end-to-end projects, contribute to architecture and processes, mentor peers, participate in hiring, and deliver high-performance, testable, maintainable UI code.

Remote senior front-end Drupal developer to design, build, implement, and maintain Drupal 8 responsive websites. Required skills include PHP/HTML/CSS/JavaScript, REST API integrations, Git, MySQL/MariaDB, Bootstrap, wireframing, automated testing, CI/CD, and working New York hours. Fluent English required.

As a Senior Frontend Engineer, you will manage core user experiences on the Made platform, using Flutter and React. Your role includes feature ownership, collaboration with teams, mentoring junior engineers, and contributing to technical standards and architecture.