Top Front End Developer Jobs in Rio de Janeiro

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.

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.

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.

Lead frontend architecture for Clara Builders (Next.js 15, React, TypeScript), extend backend/infra (Prisma/Postgres, deploy pipeline), work on the Cloudflare AI Gateway and agent infrastructure (Figma-to-code MCP, documentation agents, n8n automations), design and ship new AI tooling (OAuth clients, unified access), and raise technical standards across the pod through ownership and code review.

The role involves building creative tools for content editing, enhancing features with PixiJS and WebGL, and improving collaboration workflows.

Design and evolve a scalable frontend platform used across multiple React applications. Build reusable capabilities (auth, state, networking), optimize performance and observability, enforce testing and accessibility standards, participate in architecture reviews, and mentor engineers to improve developer experience and cross-application reliability.

Build and maintain responsive, accessible web interfaces for a consumer health platform using React and TypeScript. Translate designs into performant UI, create reusable components, integrate REST/GraphQL APIs, collaborate with product/design/backend teams, participate in code reviews, and optimize frontend performance across devices and browsers.

Lead the frontend development team, design solutions for complex scenarios, mentor engineers, and ensure reliable, scalable user-centric solutions for Wellhub's platform.

As a Frontend Software Engineer, you will build user interfaces for Amplemarket's sales platform, collaborating with co-founders and cross-functional teams to enhance product usability and user experience.