87 backend developer English-speaking jobs in Catalonia

You will be the main developer responsible for the backend service, with a strong focus on performance ... While backend expertise is essential, you should also have solid experience in modern frontend development ... , but not a main requirement—our infra team handles deployments and operations.ResponsibilitiesLead backend ... decisions and drive architectural improvements.Proactively propose and implement enhancements on both backend ... and frontend.Ensure backend and frontend code are well tested, using Playwright for end-to-end and integration

architecture.Write unit and end-to-end tests to maintain quality.Collaborate closely with UX designers and backend ... Contract React Developer Location: Hybrid – Must be available in Barcelona office 2 days per week (Thursdays ... is partnering with a leading global client whose eCommerce team, We’re looking for a Contract React Developer

chops.Familiarity with observability tools (Prometheus, Grafana, OpenTelemetry).BenefitsGenerous pay & developer-first ... Engineer - someone who’ll own the backend systems that power our crypto and self‑custody platform. ... deep expertise in Go, and TypeScript.What you’ll doDesign, implement, and operate scalable, resilient backend ... developers focus on building great products instead of managing complex crypto tooling.We're hiring a Backend ... database schema design to distributed cache strategies and sharding approaches.Your profile3+ years of backend

We are looking for a Full Stack Developer with a heavy backend emphasis to join our Growth Team.

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

Your ProfileWe are looking for a Senior Full Stack Developer (React / Next.js + Python) to join a strategic ... and international environment.4–5+ years of experience with React and Next.jsExperience developing backend

Backend: Solid experience with Python, Django, and PostgreSQL. ... Backend Development: Build scalable and secure APIs using Python and Django.

.NET, PostgreSQL, and ReactComfortable working with AWS, Docker, and GitHubActively uses AI-powered developer ... company.Bachelor's degree in Computer Science or equivalent practical experience6+ years of professional backend

collaborative work environment, where you will have the opportunity to learn and grow as a software developer ... team.Design, build, and review scalable frontend solutions using React and modern frontend practices.Drive backend

that your unique skills, passion and superdrive will help us achieve our vision.As a Senior Frontend Developer ... Next.js, and modern JavaScript/TypeScriptCollaborating closely with product managers, designers, and backend

LGT Digital Factory (Spain) S.L. is searching for a Senior Java Backend Engineer – Workflow Automation ... Do you have 5+ years of experience in Java backend development, Spring Boot applications, and system ... Are you naturally motivated, able to work independently, and eager to take ownership of complex backend ... In this role, your primary focus will be implementing the business logic that integrates backend systems ... Flowable applications, ensuring seamless workflow automation across our operations.As a Senior Java Backend

customer experience and business growth.Your new roleDesign, implement, maintain and operate robust backend ... knowledge in server-side backend developmentHands-on experience with event-driven architecture and GCP ... 5+ years of professional experience as a software developerExperience with Kotlin (JVM) for backend developmentExtensive

Javascript Developer will analyze, develop, and track requirements for A/B tests on web platforms. Responsibilities include unit and manual testing, cross-functional collaboration, and code reviews. Requires 5+ years of experience as a Frontend Engineer with in-depth knowledge of JavaScript, TypeScript, HTML, and CSS.

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 ... than just point-to-point integration projects.Drive the product vision & roadmap for the Dow Jones Developer ... understanding of API architectures (REST, GraphQL, Event-Driven), platform technologies (API Gateways, Developer ... API offerings.Foster an "API-as-a-Product" mindset and a culture of consistency, quality, and developer-centricity

with a required overlap of US working hours (2-6 PM CET).Role & ResponsibilitiesAs a Senior Python Developer ... team player with a “can-do” attitude and the ability to constructively give and receive feedback.A developer ... Practices: Knowledge of API authentication methods such as OAuth and JWT.What We Look ForA detail-oriented developer

Lead Android Developer will design, develop, test, and maintain software for the Grow & Engage domain, focusing on customer acquisition, signup, premium memberships, and user engagement. Requires experience with the Android Open Source Platform, Material Design, Kotlin, Reactive programming, and testability principles.

who take pride in building secure, scalable systems that bridge frontend user experiences with robust backend ... including hooks, state management, and component lifecycle management.Experience with Python-based backend ... similar frameworks.Implement API-centric architectures that ensure clean separation between frontend and backend ... principles.Champion observability practices by integrating logging, metrics, and monitoring into both frontend and backend

The Frontend Developer will be responsible for developing and implementing user-facing features using ... control every process.Role DescriptionThis is a full-time hybrid role in Barcelona (Spain) for a Frontend Developer

Senior Front End Developer (Angular) Summary Location: Barcelona (Hybrid) Day Rate: NegotiableDuration ... They are looking to hire an experienced Front-End Developer on a contract basis for an initial contract ... until the end of 2026.About the Role We are seeking a talented and experienced Front-end Developer with

Reporting to the Lead Developer, the Software Engineer contributes to the technical direction of projects ... Key Stakeholders: Reports to: Lead Developer Works with: Product Owners External interactions: May collaborate