98 backend developer English-speaking jobs in Catalonia

We are seeking a talented Backend Engineer to join our expanding teams in Barcelona and evolve our product ... Europe, including Vienna and Barcelona, and a 1,500-strong team of more than 80 nationalities.As a Backend

About The Role As a Backend Developer, you will be a key architect of the engine that powers our global ... Our backend is powered by Node.js (Koa, NestJS) and MongoDB. ... Responsibilities: Design, build, and maintain clean, efficient, and scalable backend services in Node.js ... Own key parts of our backend architecture, making critical decisions that enhance performance, reliability ... Requirements Experience: 5+ years of backend development experience, preferably in a product-driven environment

Be part of the design of all backend systems planning and design. ... Collaborate and lead backend team to deliver high-quality software solutions. ... About the role How You’ll Make An Impact Build backend core services and solutions to enhance our

Experience contributing to platform engineering initiatives or internal developer platforms. ... scalable backend services within a modern microservices architecture. ... Familiarity with Python for backend services or data‑oriented workloads. ... Identify and address performance, reliability, and stability issues in backend services. ... Mission The Backend Software Engineer will be responsible for designing, implementing, and maintaining

backend systems. ... We are looking for a Python Developer with strong experience in Python and Flask to help build scalable ... Responsibilities Design, build, and maintain scalable backend services using Python and Flask. ... Hands‑on experience building backend applications with Flask (or similar Python frameworks).

As a backend engineer, you will also be part of our games team and work closely with game design, player ... What You'll Do Our backend applications are developed using several programming languages & technologies ... , so you should be eager to work with our legacy code, extend, maintain & continuously refactor the backend

Required Experience 10+ years of experience in software engineering, with at least 5 years working as a backend ... Familiarity with developer tooling, developer experience optimisation, or DevOps practices. ... Work closely with DevOps and Developer Experience teams to enhance developer productivity and streamline ... These squads oversee the Core Platform, Core Data (including blockchain integrations), Developer Experience ... Advocate for best practices in software development, DevOps, and developer productivity across all squads

Who We’re Looking For We are hiring a Senior React Native Developer to join a team building a new mobile ... on wallet integrations (connect, sign transactions, manage assets) Ensure smooth interaction with backend ... app performance, reliability, and user experience across iOS and Android Collaborate closely with backend

Experience in developing backend applications and automation tools. ... Qualifications Proven experience as a Java Developer, with a strong understanding of Java 8 and Java ... Job Description Key Responsibilities Design, develop, and maintain backend applications for our automation

Backend experience on PHP be taken into account (Big plus). ... Comfort using modern developer tools, including AI-assisted workflows, to work more efficiently. ... Collaborate closely with Backend, Product, and Design, ensuring clean interfaces, good UX, and shared

Backend: Node.js. Deep knowledge of JavaScript and TypeScript. ... collaborative work environment, where you will have the opportunity to learn and grow as a software developer ... Drive backend development with Node.js, ensuring clean APIs and solid architecture.

Aleph Full-Stack Developer (f/m/d) About Satellogic Satellogic is a vertically integrated Earth Observation ... About the Position We are seeking an experienced Full‑Stack Developer to take on End‑to‑End ownership ... Backend & Data: Expertise in Python for building web APIs and services, along with strong data modeling ... Quality & Testing: Proficient in backend testing tools and practices (pytest, coverage, mocks) and frontend

Have strong backend fundamentals and experience building APIs and backend services. ... scaled backend systems with complex data models and external integrations. ... Have experience in building and operating backend systems in production. ... Have designed database schemas and backend architectures for complex business workflows. ... Why this role exists: We are looking for an experienced backend engineer who has previously built or

This role is focused on high-performance backend development for the exchange core and surrounding ecosystem ... core exchange infrastructure and trading systems Designing and building high-throughput, low-latency backend ... of a next-generation trading platform What were looking for 5+ years of experience with C# / .NET backend ... Strong system design and backend architecture skills Tech stack C# / .NET (latest versions) High-performance ... backend architecture In-memory processing Modern infrastructure and cloud tooling What we offer Opportunity

Development background in modern frontend and backend frameworks. ... Developer enablement: Guide the development team with tools, automation, and best practices for CI/CD

Main requirements We’re looking for a strong backend engineer. ... Experience with our tech stack is a plus, but what matters most is solid backend expertise and alignment ... Main responsibilities Guide backend architecture, testing, and technical decisions across teams, ensuring

have Experience designing and maintaining public APIs, including authentication, versioning, and developer ... You’ll thrive in ambiguity, helping define what we build and why, while designing robust backend systems ... you’ll bring Full‑Stack Technical Depth: Solid production‑level capabilities in both frontend and backend

of the technical direction across a growing portfolio of mobile games, spanning client architecture, backend ... gaming or mobile products Strong expertise in scalable architecture, performance optimisation, and backend

About the role As a Backend Staff Engineer, you will drive the technical standards for the Backend across ... You will contribute to scaling up Backend engineers in multiple squads and bringing great talents on ... You will lead Backend engineers with tech roadmaps, architecture decisions, and feature development and ... technical leadership, and mentoring others About your experience At least 10 years of experience in backend

These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft