140 backend developer English-speaking jobs in Catalonia

At Capitole we are looking for a PHP Backend Software Engineer to join the development team to help build ... If you are passionate about backend development, clean architecture, and modern cloud-native environments ... We're looking for someone with: 5+ years of backend experience with PHP & Symfony Strong knowledge ... You will work on the development and maintenance of backend systems platforms, ensuring optimal performance ... new technologies (Golang / Python is a plus) In this role you'll: Build and maintain scalable backend

something, you will know how to (and you will want to) deploy it to a production environmentAs a senior developer ... The roleWe are hiring senior backend engineers who embrace software craftsmanship and have a strong background ... teamYou will be part of a product development cross-functional team, where you will work with other backend

Backend Developer Company: Spoki Location: Barcelona, Spain We require on-site presence at our San Vito ... Must To Have Experience: 3+ years in backend development with production-grade systems. ... Contribute to backend services written in Golang where performance and concurrency are critical. ... Open Source: Contributions or side projects showcasing backend, AI, or automation expertise. ... Key Responsibilities Backend Development: Design, build, and maintain scalable, high-performance APIs

The Role We are looking for a Backend Developer to design and evolve business-critical services. ... Responsibilities Design and develop robust APIs and backend services. ... Requirements 4+ years as a Backend Engineer with Node.js and TypeScript. High level of autonomy.

We're hiring a Backend Engineer - someone who'll own the backend systems that power our crypto ... Benefits Generous pay & developer-first culture: Work with a high-impact, well-compensated team in Barcelona ... Your profile 3+ years of backend experience building production systems in Go and TypeScript. ... What you'll do Design, implement, and operate scalable, resilient backend services handling millions

About you: 6–10+ years experience as a Full-Stack Developer. ... Node.js / Typescript on backend and frontend (mainly Vue.JS).. ... About the Role We're looking for a hands-on Full-Stack Developer to join our scaling tech team and ... collaborate closely with the tech team across the full development lifecycle — refining frontend & backend

focus on automation, reliability, and developer enablement. ... This role sits at the intersection of SRE, Platform Engineering and Backend Engineering, with a strong ... platform used by multiple teams and services High ownership and impact on platform reliability and developer

collaborative work environment, where you will have the opportunity to learn and grow as a software developer ... What You’ll DoDesign and build responsive, intuitive interfaces using React and Next.js.Support backend ... development using Node.js (Fastify).Integrate APIs for smooth frontend-backend communication.Contribute ... focus on building user-centric, responsive, and performant web applications, while contributing to backend ... and bring improvements to the development workflow.Work in Agile teams, supporting both frontend and backend

Solid experience with Node.js backend and modern frontend frameworks (Vue.js preferred).

Location: Hybrid (Barcelona, Spain; 2–3 days in-office)Seniority: SeniorPosition: Backend EngineerSalary ... : €60,000 – €85,000 + phantom shares & benefitsWe are looking for a Senior Backend Engineer to join a ... highly technical robotics software team building backend systems for autonomous inspection robots. ... About the RoleThis is a hands-on senior backend role for someone who enjoys ownership, autonomy, and ... You will design, implement, and maintain production backend systems that are reliable, scalable, and

React Developer We are:Wizeline, a global AI-native technology solutions provider, develops cutting-edge ... You will collaborate closely with product, design, and backend teams to deliver high-quality, accessible ... streamline workflows.Experience with performance optimization and front-end testing frameworks.Exposure to backend

under strict latency and quality requirementsMinimum Qualifications5+ years of experience in ML or backend ... healthtechHighly collaborative, senior technical teamFully remote role based in BarcelonaFun off-sites and strong developer

JavaScript, React/Angular).Performance optimization techniques (lazy loading, caching, CDN, minification).Backend ... testing tools (e.g., JMeter, Gatling, LoadRunner, k6).Experience with frontend monitoring frameworks and developer ... SLAs.Analyze frontend performance using modern tools (e.g., Lighthouse, WebPageTest, Dynatrace) and browser developer

Backend & Systems Integrate blockchain logic into backend services and APIs. ... Backend experience with Python, Node.js, Rust or Go.

JavaScript, React/Angular).Performance optimization techniques (lazy loading, caching, CDN, minification).Backend ... testing tools (e.g., JMeter, Gatling, LoadRunner, k6).Experience with frontend monitoring frameworks and developer ... SLAs.Analyze frontend performance using modern tools (e.g., Lighthouse, WebPageTest, Dynatrace) and browser developer

We're hiring a Backend Engineer — someone who’ll own the backend systems that power our crypto and ... systems, cryptography, and fintech.What you’ll doDesign, implement, and operate scalable, resilient backend ... RabbitMQ (or similar), optimizing for throughput, latency, and fault tolerance.Your profile3+ years of backend

Design, develop, and productionize scalable systems using Python and Flask. Translate customer requirements into practical solutions and collaborate with stakeholders to deliver AI-driven products.

Drive the product vision & roadmap for the Dow Jones Developer Portal. ... Including any redesign or functionality & capabilities improvements to truly embrace a developer-centric ... advanced strategic thinking and technical fluency to focus on corporate standards, compliance, and developer ... Foster an "API-as-a-Product" mindset and a culture of consistency, quality, and developer-centricity ... understanding of API architectures (REST, GraphQL, Event-Driven), platform technologies (API Gateways, Developer

The Frontend Developer will be responsible for developing and implementing user-facing features using ... Role Description This is a full-time hybrid role in Barcelona (Spain) for a Frontend Developer at Knox

We are looking for a versatile and motivated Junior Software Developer eager to grow professionally and