Top Front End Developer Jobs in Barcelona

Build and maintain front-end features and developer-facing tooling for New Relic One using modern JavaScript/TypeScript. Select frameworks, produce performant CLI tools, automate developer tasks, collaborate on UI best practices, and implement CI pipelines and testing.

Build and scale a return-management product for eCommerce. Solve challenging frontend problems, own software from infrastructure to product, collaborate with product and e-commerce leaders, iterate quickly, and contribute to a high-performance engineering team in Barcelona.

Lead frontend development for financial services products (subscriptions, payments, payroll, invoicing). Drive frontend architecture, modernize back-office UI, implement micro-frontend patterns, and collaborate cross-functionally to deliver production-ready features.

Lead front-end development for subscription, maintenance, and invoicing applications. Own technical design, implement features with unit/integration tests, participate in code reviews, mentor junior developers, collaborate with product/QA/backend teams, and ensure reliable deployments and integration-to-production quality.

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.

As a Frontend Developer, you will implement features, develop reusable code components, optimize performance, and collaborate within agile teams, ensuring quality software development.

As a TypeScript developer, you'll write clean code, develop front-end solutions, and utilize various web technologies to enhance home design experiences.

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

Build user-facing features with React and TypeScript, implement responsive UIs from Figma, collaborate with design, deploy via continuous deployment, learn Node.js/backend, use AI coding tools, and ship production-ready features while receiving mentorship.

Build and ship performant, polished frontend features using React/TypeScript. Refactor code incrementally, implement smooth animations, contribute to backend Node.js APIs when needed, use AI-assisted tools, own production deployments, and collaborate directly with CTO/CPO on product and design.

Build and maintain a high-data web platform using modern frontend technologies. Deliver well-structured code, develop SPAs with React/Redux, integrate Node/Express backends, implement testing, use build tools, follow SCRUM, and adapt across environments.

Lead ownership of the frontend experience from design through deployment and operations. Ship features collaboratively, drive technical and UX decisions, maintain strong automated test coverage (unit/integration/e2e), improve frontend observability, and help migrate a hybrid Backbone/Node codebase toward modern React/TypeScript.

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.

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.

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.

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.

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

Design, build, and maintain performant React/Redux/Vite web applications and data-visualization portals. Collaborate across teams to implement features and RESTful APIs, write tests, perform code reviews, debug complex issues, follow agile and CI/CD practices, refine UX details, and adopt tooling to speed development.

Design and develop front-end solutions using JavaScript frameworks (React/Angular/Vue). Collaborate with stakeholders to define solutions, support product engineering leads in agile ceremonies, mentor junior engineers, and maintain reliable, reusable code while understanding component interactions and CI/CD processes.

Develop and maintain front-end Drupal 8/9 themes, custom templates and libraries; implement full-lifecycle Drupal solutions; propose user-friendly layouts and improvements; perform feature gap analysis; support automated testing, CI, and deployment processes.

Remote front-end Drupal developer responsible for building Drupal themes, custom templates and libraries; developing and maintaining Drupal 8/9 implementations; proposing user-friendly layouts and improvements; performing feature gap analysis; and supporting responsive UI/UX using frameworks and CI/deployment/testing workflows.

Develop, implement, and maintain Drupal 9 front-end websites; perform feature gap analyses, build custom features for migrations, provide post-migration support, integrate REST APIs, and support CI/CD and automated testing processes.

Develop, implement, and maintain Drupal 9 front-end websites, perform feature gap analyses, build custom features to support migrations, and provide post-migration support. Work with responsive frameworks, REST APIs, Git, automated testing, CI/CD, and Agile delivery.

Remote front-end developer role to design and build client-facing applications using JavaScript frameworks (React/Angular/Vue). Collaborate in agile teams, support project ceremonies, mentor juniors, and maintain CI/CD workflows and code quality.

Remote front-end developer working with product and engineering leads to design, prototype, and build reusable client-side solutions. Participate in backlog refinement, sprint ceremonies, mentoring juniors, and translating technical issues to non-technical stakeholders.