Top Front End Developer Jobs in Valencia

Build and ship secure, reliable React applications for critical banking journeys. Responsibilities include developing frontend features, evolving component libraries and state-management patterns, implementing testing and CI/CD practices, embedding accessibility, security, and regulatory compliance, improving delivery quality and observability, monitoring production health, resolving incidents, collaborating cross-functionally, documenting frontend standards, and mentoring engineers.

Design, architect, implement, and maintain React and TypeScript web applications. Develop responsive HTML/CSS pages and email templates optimized for SEO and Core Web Vitals. Write unit and integration tests, solve technical challenges, collaborate with the team, and take ownership of project delivery. Preferred experience includes Redux, React Query, Jest, Cypress, and SSR/SSG frameworks such as Next.js, Astro, or Remix.

Own complex frontend features across web and mobile, design React and React Native systems, improve rendering and runtime performance, and build maintainable shared abstractions. Collaborate with product, backend engineering, and QA to deliver simple user experiences. Maintain quality through code reviews and unit, end-to-end, and visual-regression testing while mentoring colleagues and improving frontend engineering standards.

Shape frontend architecture and technical direction across React, React Native, and an Nx monorepo. Own shared libraries, platform capabilities, design-system foundations, developer tooling, performance, testing, migrations, and developer experience. Diagnose systemic web and mobile issues, remain hands-on with implementation and investigation, influence cross-team decisions, partner with product and engineering, and mentor senior engineers while improving reliability and product quality.

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.

Develop and maintain scalable web applications using Vue.js, Nuxt 3, and TypeScript. Collaborate in Agile squads, own features end-to-end, ensure code quality with automated testing, and improve engineering standards for international e-commerce clients.

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.

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.

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.

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

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

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

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.

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.