238 react jobs in Barcelona, España.

... opinions on what world-class B2C design looks like when the interface itself is becoming conversational, generative, and adaptive. You will shape that, not just react to it. - You will live a genuinely unique scale moment. Going from a small design team to 7 Product Designers and a User Researcher, while expanding from France ...

... companies, you're especially well-suited if you've worked with highly sensitive data. - You're proficient in https://jobeax.com/link/JSd7UYCSg572jJDY, TypeScript, and React or https://jobeax.com/link/tzGekrj9a8ToGEDv, and bring hands-on experience with PostgreSQL, Redis, and REST APIs. - Fluency in English What we offer - Key responsibility ...

... CI/CD environments (Jenkins, GitLab CI, Azure DevOps). Solid understanding of frontend-oriented development, including - Web technologies (HTML, CSS, JavaScript, React/Angular). - Performance optimization techniques (lazy loading, caching, CDN, minification). - Backend/API dependencies and their impact on frontend performance. ...

... empresa pequeña, donde hayas tenido que tocar todas las áreas del stack. - Proyectos reales y sólidos con https://jobeax.com/link/JSd7UYCSg572jJDY en backend y React en frontend. - Buen entendimiento de bases de datos relacionales (idealmente Postgres) y optimización de rendimiento. - Experiencia diseñando y consumiendo APIs ...

... empresa pequeña, donde hayas tenido que tocar todas las áreas del stack. - Proyectos reales y sólidos con https://jobeax.com/link/JSd7UYCSg572jJDY en backend y React en frontend. - Buen entendimiento de bases de datos relacionales (idealmente Postgres) y optimización de rendimiento. - Experiencia diseñando y consumiendo APIs ...

... are a team of 200+ Product Engineers building a Business Management solution that actually works for the people using it. Our core stack is Ruby on Rails and React, though we’re open to engineers from other stacks – what matters most to us is the maturity of your development practice. The API & Integrations team addresses ...

... profiling to understand real-user experience and act on what you find​​​ QualificationsEXPERIENCE​​​​• Proven ability to build and deliver web applications with React and TypeScript to a high standard​​ ​​​• Confidence working with modern build tooling such as Bun and Vite​​ ​​​• Demonstrated experience with TanStack Router ...

... engineer at heart. - Have an excellent grasp of system design and modern architecture patterns. - You have knowledge or hands-on experience with technologies like React, TypeScript, https://jobeax.com/link/JSd7UYCSg572jJDY, GraphQL, Kotlin/Swift, and RabbitMQ. - Exposed to different agile methodologies and understand deeply ...

... Implement orchestration layers, retrieval pipelines, and APIs for intelligent agents using Python and FastAPI - Develop intuitive and performant frontends in React and TypeScript for configuring and monitoring AI agents - Collaborate with ML engineers to connect LLMs, embeddings, and RAG systems into production environments ...

... backend systems and feel comfortable switching between languages. While backend is your priority, you don't shy away from the frontend; practical expertise in React sis highly https://jobeax.com/link/aaz29M3EFlXLkml6 Team Player: You have a strong collaboration mindset. You believe that success happens together and you actively ...

... virtualization, OS deployment and configuration on Linux and Debian-based https://jobeax.com/link/nYF7zGCJnx2kCQDh points for experience with web backend (REST), frontend (React), agentic engineering, IPv4 https://jobeax.com/link/yTF2myMqykl1dp1w points for familiarity with robotics, ROS2, embedded Linux (Jetson).What’s in it for you?You ...

... virtualization, OS deployment and configuration on Linux and Debian-based https://jobeax.com/link/nYF7zGCJnx2kCQDh points for experience with web backend (REST), frontend (React), agentic engineering, IPv4 https://jobeax.com/link/yTF2myMqykl1dp1w points for familiarity with robotics, ROS2, embedded Linux (Jetson).What’s in it for you?You ...

... profiling and tuning Java (Spring Boot) and Go services, optimising data access against SQL (MySQL, PostgreSQL) and MongoDB , and supporting our frontend teams (React, Angular or https://jobeax.com/link/tzGekrj9a8ToGEDv) on build, delivery and runtime telemetry — wherever reliability, performance or security is at stake. Quality ...

... architecture, and deliver delightful, high-impact experiences for event organizers and attendees.You’ll work on:Product development in Python/FastApi and/or React for our event and group booking platformDesigning and owning system architecture, integrations, and performanceConnecting with third-party APIs (hotels, venues, ...

... - Capacidad para gestionar proyectos (alcance, fechas, riesgos, comunicación con stakeholders). - Conocimientos de software y stack típico web: Symfony/PHP, React, Apache, APIs REST. - SQL sólido y experiencia práctica con MySQL/SQL Server y ETL en SQL Server (SSIS + SQL Agent) y scripting asociado (operación y evolución). ...

... and Docker to schedule and run our services - Envoy Proxy for RPC - AWS for most of our production infrastructure and GCP for most of our data infrastructure - React for our public web apps and internal tools - We also have physical datacenters with actual cables to connect to various third parties The Interview Process - ...

... Terraform, AWS CDK, or similarProficiency in JavaScript, TypeScript/Node.jsExperience with an Object-Oriented language such as Java, C, C++, or PythonProficiency in React or similar frameworkExperience building and maintaining microservice architectures, designing APIs, and cloud security best practices knowledgeExperience with ...

... opinions on what world-class B2C design looks like when the interface itself is becoming conversational, generative, and adaptive. You will shape that, not just react to it. - You will live a genuinely unique scale moment. Going from a small design team to 7 Product Designers and a User Researcher, while expanding from France ...