Top Front End Developer Jobs in Madrid

Drive end-to-end product development for iTero 3D imaging systems by translating clinical needs into software requirements, leading cross-functional agile teams, driving ML diagnostic initiatives from PoC to productization, analyzing clinical usage data for improvements, and embedding customer feedback into product decisions to enhance usability, performance, and clinical value.

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 maintain modern dashboard UIs using React and TypeScript. Implement canvas-based generative AI pipelines, integrate async pipelines via WebSockets, ensure performance for large media datasets, shape UX decisions, and define data contracts with backend teams.

Build and maintain responsive, high-performance user interfaces using React and modern front-end technologies. Translate UI/UX designs into reusable code, integrate with backend APIs, optimize performance and cross-browser compatibility, and contribute to testing, code reviews, and engineering best practices in a product-driven, remote environment.

Senior front-end Drupal developer to design, develop, implement, and maintain Drupal 8 websites. Build responsive sites (Bootstrap), code in PHP/HTML/CSS/JavaScript, integrate REST APIs, use Git, and work with MySQL/MariaDB. Use wireframing/modeling tools and apply automated testing, deployment processes, and CI. Remote contractor, must work New York time and be fluent in English.

The role involves developing high-quality Vue.js applications, creating interactions, collaborating with back-end engineers, and writing tests.

Serve as a senior Java full-stack engineer building and maintaining backend services for blockchain applications, integrate APIs with React/Vue frontends, design scalable enterprise blockchain solutions, troubleshoot complex backend issues, and collaborate with cross-functional teams to apply best practices.

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

Develop high‑traffic web applications and self‑serve conversion flows (discovery → quote → signup), build and optimize alan.com and marketing acquisition systems, collaborate with Marketing/Sales/Product/Data/Design, and deliver measurable improvements that drive member acquisition and revenue using the company stack.

Own and ship frontend features end-to-end with a product mindset: onboarding, activation, dashboards, and billing UI. Build AI-first experiences, instrument features (analytics, events, dashboards), run A/B experiments, collaborate with backend and cross-functional teams, mentor engineers, and maintain clean, well-tested React code.

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.

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.

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.

Frontend-focused product engineer building high-quality SaaS user experiences. Work in cross-functional squads to own UI, interaction patterns, performance, accessibility, prototyping, instrumentation, and feature rollouts. Primary frontend work with openness to backend or mobile tasks, using AI-assisted coding and agile practices.

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.

SynergyOS seeks software engineers for backend, frontend, and DevOps roles to build a productivity platform for enterprises, enhancing office workflows.

Design and deliver performant, scalable frontend experiences for a high-traffic global platform. Collaborate in cross-functional squads to implement end-to-end features, participate in architecture decisions, ensure quality through testing and code reviews, mentor teammates, and drive improvements in observability, scalability, and developer experience.

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

The Senior Frontend Engineer will optimize and refine existing code, implement UX/UI improvements, and maintain high code quality, working autonomously and collaboratively with designers and engineers.

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.

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

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.

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.

Join Cerebras Systems to optimize and develop frontend compiler infrastructure for PyTorch models on their unique wafer-scale AI platform, focusing on model representation and optimization.