Top Front End Developer Jobs in Rio de Janeiro

As a Senior Front-End Software Engineer, you'll design and implement services, contributing to the architecture and product strategy in a fast-paced environment.

Build and maintain high-performance customer-facing frontend applications using React, Next.js, and TypeScript. Collaborate with designers on UX/UI, develop reusable component libraries and scalable design systems with Storybook, and create dashboards, data tables, charts, and analytics visualizations. Communicate technical tradeoffs and risks, navigate ambiguity, and deliver incremental product improvements quickly.

Build and maintain high-performance customer-facing frontend applications using React, Next.js, and TypeScript. Collaborate with designers on UX and interaction design, create reusable component libraries and scalable design systems with Storybook, and develop dashboards, data tables, charts, and analytics visualizations. Communicate technical tradeoffs and risks, navigate ambiguity, and deliver incremental improvements quickly.

The role involves designing, building, and implementing new services, working closely with the product team, and taking ownership of projects from 0 to 1.

As a Senior Front-end Engineer, you will develop responsive web interfaces using modern frameworks and ensure performance and accessibility of web applications.

The Senior Frontend Engineer will develop and maintain microfrontend applications, collaborate on backend integration, and enhance the architecture of Cobre's financial platform while ensuring performance and security standards are met.

Build and maintain high-quality web and mobile interfaces using TypeScript and Next.js. Translate Figma designs into responsive, pixel-perfect code. Follow Clean Architecture, use design systems and Storybook, engage AI coding assistants to accelerate delivery, own features end-to-end, and collaborate with product, design, and engineering teams.

Lead frontend feature releases and own production lifecycle for React and TypeScript domains. Build scalable, tested, high-performance AI-powered interfaces, integrate with a Java Spring Boot backend, and improve user experience and team efficiency. Participate in code reviews, estimate development work, monitor frontend health, and ensure stable, reliable software for dental practices.

The Software Engineer will design and maintain payment processing systems, mentor other engineers, and ensure security in client transactions within the crypto ecosystem.

Senior UI developer responsible for designing and building responsive React-based UIs and dashboards for cybersecurity analytics. Develop backend services and APIs in Python, integrate security data sources, optimize SQL Server/PostgreSQL reporting, collaborate with stakeholders, influence architecture, and mentor junior developers.

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

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.

Implement and modernize UI across an enterprise web application: apply new stylesheets, layouts, and screen redesigns while preserving functionality. Enhance existing screens as part of UX modernization, ensure responsiveness, accessibility, cross-browser compatibility, and high code quality. Collaborate with designers, developers, and stakeholders, and participate in testing and troubleshooting.

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.

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.