Top Front End Developer Jobs in Lisbon

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.

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.

As a Front-End Web Developer, you'll create high-performance web applications, collaborating with designers and back-end developers to optimize user interfaces using modern technologies.

Build and maintain scalable customer-facing front-end features (onboarding, pricing, subscriptions, payments) using React and TypeScript. Collaborate with cross-functional teams, participate in architecture and code reviews, write automated UI/integration tests, ensure code quality, and contribute to developer experience and process improvements.

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.

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.

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

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

Build and modernize Productboard’s frontend platform, migrating its legacy design system to Spark UI. Design AI-ready module boundaries, API contracts, documentation, and agent workflows involving tool use and autonomous execution. Develop high-performance React applications, validate experiments with users, collaborate with product and design teams, own features through production, mentor engineers, and share engineering knowledge across the organization.

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.

Build and ship full-stack features for North, develop autonomous agents that access sensitive enterprise data, productionize state-of-the-art models, write minimal, secure low-resource code, and collaborate with researchers to deploy performant RAG/agentic applications while prioritizing security and user experience.

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.

Build and maintain user-facing features and interfaces for Restream web services. Design and implement UI and business logic, collaborate with product designers and engineers, perform code reviews, improve reliability and scalability, and evaluate emerging technologies.

Design and implement complex customer-facing frontend features using TypeScript and React. Provide technical leadership, mentor junior engineers, drive frontend architecture and best practices, improve performance and accessibility, partner with product/design, integrate with backend APIs, and manage technical debt and scalability.

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.

Build and architect high-performance, data-rich interfaces using React and TypeScript for observability products. Own frontend architecture, state management, component patterns, visualization, testing, and performance across massive datasets. Collaborate with product, design, and backend teams to deliver user-facing features, leverage AI coding tools, advocate for user experience, and mentor engineers. Experience with observability, OpenTelemetry, cloud-native technologies, and startup environments is advantageous.

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

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.

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.

Design and develop high-performance Angular applications, collaborate with cross-functional teams, ensure architecture and code quality, integrate complex frontend platforms (StencilJS/React), work with modern Angular (Signals, v19-21), TypeScript, RxJS, contribute to monorepo strategies and CI/CD pipelines.

Develop, maintain, and improve Angular-based web applications using TypeScript/JavaScript. Ensure code quality via reviews and testing, collaborate with cross-functional teams, and support CI/CD and continuous improvement initiatives.

Design and build high-performance, mobile-first web applications and internal CMS/analytics tools. Own frontend architecture, reusable UI systems, and developer-friendly foundations. Optimize rendering, caching, and Core Web Vitals for high-load environments. Implement complex editors, forms, dashboards, and state-heavy interfaces with strong testing and observability practices.

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

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.

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.