Top Front End Developer Jobs in Portugal

Build, test, and optimize responsive web applications using Next.js and React. Collaborate with designers and back-end engineers to implement high-performance, cross-browser UIs, manage state with Redux/Context API, integrate RESTful APIs, and debug front-end issues while following best practices and maintaining clean, scalable code in a remote team.

Develop and enhance responsive frontend applications throughout the full software lifecycle. Write clean, scalable, testable code; consume APIs; identify technical issues and improvement opportunities; contribute to testing, engineering practices, technical vision, and continuous delivery. The role requires frontend framework experience, familiarity with monitoring and version control, strong problem-solving, initiative, adaptability, and English fluency.

Build and improve Restream’s web interfaces and user-facing features for the AI Clips team. Design UI and business logic, collaborate with product designers, participate in code reviews, improve system reliability, and evaluate emerging technologies. The role requires strong JavaScript and TypeScript expertise, advanced React knowledge, CSS preprocessor experience, and familiarity with backend development, cloud infrastructure, containers, and continuous deployment.

Develop and support large frontend features, refactor existing code, and collaborate on full-stack and AI-related initiatives. Work primarily with React-based applications, ensure browser performance and correct network behavior, and apply solid programming patterns and algorithmic reasoning.

Build and maintain reliable, high-performance frontend features for QV.AC, an AI assistant. Responsibilities include developing responsive interfaces, managing application state, debugging and testing complex applications, conducting code reviews, improving performance, and maintaining code quality. The role requires React or Preact, modern JavaScript or TypeScript, state-management expertise, and interest in P2P or distributed systems. Preferred experience includes desktop and cross-platform development, WebRTC, real-time communication, and UI optimization.

Build and maintain high-performance, accessible React frontend applications and component libraries. Collaborate with designers, product, and QA; write tests; optimize performance; mentor juniors; own projects from prototype to production.

The Senior Software Engineer will enhance Dashlane's Web Platform quality and performance, implement testing frameworks, drive AI integration, and mentor teams.

Develop and maintain cloud-native front-end applications using HTML, CSS/SCSS, JavaScript and Vue.js (Vuex, Vue Router). Ensure UI/UX feasibility, build reusable components, maintain cross-browser compatibility, use version control, and collaborate to drive product development for Altium 365.

Develop server-side applications using Kotlin and Java, collaborate with teams to enhance Atlassian plugins, and ensure code quality through testing and reviews.

Lead frontend development of AI-powered agent and admin interfaces: design and ship React/TypeScript UIs, integrate with backend and ML systems (streaming, latency, failure handling), drive frontend architecture and performance, mentor junior engineers, and own features end-to-end from design to production.

Design and build scalable, accessible frontend applications for AI-driven Contact Center and UC products. Implement responsive interfaces with Angular/React, integrate with backend AI services (REST/GraphQL), optimize performance, participate in architecture and code reviews, and collaborate with cross-functional teams in an Agile environment.

Looking for a Frontend Developer with experience in JavaScript and its frameworks, along with HTML5, CSS3, and REST APIs for a collaborative team.

Join a cross-functional team to design, build, and maintain frontend features and UI components for large, long-lived products. Contribute to frontend practices, accessibility, progressive enhancement, code reviews, and collaborate with product, UX, and other engineers to improve user journeys and frontend architecture.

As a Frontend Engineer, you will build and enhance frontend solutions for financial configurations, develop internal tools, and create customer-facing interfaces, ensuring high performance and quality in financial applications.

Full-Stack Engineer responsible for developing and maintaining front-end and back-end components, collaborating on product solutions, and improving user interfaces.

The Frontend Developer will design and implement features in React, Angular, or Vue.js, ensuring code quality and optimizing performance, while collaborating in an agile setting.

Design, develop, and maintain scalable Next/React front-end applications and API middleware. Lead architecture discussions, enforce code quality, write unit/integration/e2e tests, collaborate globally with engineers, product analysts, and architects to deliver performant, accessible user interfaces for Richemont's retail platform.

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.

Seeking a Frontend Developer skilled in TypeScript and JavaScript, with experience in web development and 2D/3D graphics, to join our team.

Full-stack Developers at QuantCo build user interfaces for machine learning solutions, collaborating with data scientists and engineers to deliver actionable products.

Build and maintain responsive, accessible web frontends using TypeScript and React on top of microservices. Collaborate with cross-functional teams to design, deploy, monitor, and optimise product features, run experiments/A-B tests, and improve performance, reliability, and user experience across devices.

The Senior Frontend Product Software Engineer (React) will enhance the Kyte product by executing software development tasks, optimizing performance, collaborating with teams, mentoring, and establishing best practices in frontend development.

Build and ship frontend features for checkout and merchant dashboard using React and TypeScript, deploy to production, collaborate with Design, contribute to Python backend when useful, and participate in architecture and quality-focused engineering practices.

Lead front-end technical strategy across multiple teams for a complex, data-dense merchant platform. Own architecture, component systems, state management, performance, accessibility, and front-end observability. Mentor engineers, drive cross-team alignment, and partner with Product, Design, and backend engineers to deliver a cohesive merchant experience including the Primer AI Companion.

Build and own frontend UI components for a SaaS AML platform. Collaborate with backend engineers, design performant, maintainable interfaces, ensure production reliability and observability, write tests, and contribute in agile team ceremonies.