582 backend developer English-speaking jobs in Catalonia

Comfortable taking ownership of features across frontend and backend layers. ... Extend and maintain Python-based backend services when features require changes beyond the frontend. ... Professional experience working with Python and familiarity with backend frameworks such as FastAPI, ... building customer and dealer-facing products with React and Next.js while also owning the APIs and backend ... Work on API reliability, data correctness and backend touchpoints supporting customer-facing functionality

Strong understanding of developer experience principles and API usability. ... Improve developer onboarding and integration journeys to reduce time‐to‐first‐success. ... Experience designing developer‐facing products, integration flows, or API documentation. ... This role sits at the intersection of product, developer platform, payments, and infrastructure. ... You will define developer‐facing API products and create seamless integration experiences for partners

Its Software and AI Labs team accelerates developer productivity, modernizes engineering workflows, and ... on-premises, and hybrid environments; Optimize AI integrations for performance, cost efficiency, and developer

Experience building internal frameworks, testing libraries, SDKs, CLI tools, or developer tooling. ... Build automation capabilities for backend/API testing, frontend testing, end‐to‐end workflows, integration ... Solid understanding of backend/API testing, frontend testing, integration testing, and regression testing

You'll drive company-wide backend initiatives spanning transactions, search, monetization, permissions ... Join us as Principal Backend Engineer in the Foundations domain and help scale the critical systems that ... What we're looking for Large-scale backend architecture: You've designed and scaled high-volume systems ... The largest engineering domain at Qonto: Foundations spans ~110 backend engineers across internal tooling ... Bridge business goals and backend decisions: You'll connect company and customer needs to concrete technical

Build the world's most trustworthy VPN. Work with Back-End Engineers to create scalable solutions, debug vital systems, and ensure back-end meets reliability needs. Experience with PHP, SQL, and security is required.

Does This Sound Like You 3-5 years of professional backend development experience with a solid command ... airalo-public.notion.site/life-at-airalo-united-kingdom Your Main Responsibilities Are Develop and maintain robust backend

Our backend engineers have a variety of different backgrounds. ... You Should Apply If you have strong experience working on the backend of a technology product you want ... They're all looking for additional Backend Engineers right now, we do a standard interview process across ... As a product backend engineer you'll work in a squad alongside product managers, marketers, user researchers

We're expanding the Backend Lead behind an AI-powered product built on modern LLM technologies. ... designing and evolving complex distributed systems, platform-level infrastructure, or other high-scale backend ... Technically lead the backend/platform track: break down complex work into clear tasks and build processes ... Responsibilities Lead a small backend team, owning execution – decomposition, estimation and prioritization

Full Stack Developer – Retail Solutions Oliver Wyman is a global leader in management consulting, and ... We're seeking a Full Stack Developer for our Spanish team (Madrid or Barcelona) with a passion for building

What you will do Lead backend development: design, implement, and maintain scalable backend systems in ... Join to apply for the Senior Software Engineer (Python / Backend) ID41787 role at AgileEngine. ... About the role This role offers the chance to lead backend development and shape a next‐generation AI‐powered ... Contribute across the stack: while backend is the main focus, be open to occasional frontend contributions

These include frontend and backend engineers, AI research scientists, and others from Amazon, Microsoft ... Overview The responsibilities of our Platform team include building and maintaining all backend services ... and Consumption Tracking, ensuring they meet business and scalability requirements Oversee the full backend ... with overall product strategy and user experience An Ideal Candidate Should Have Proven experience in backend ... customization and integration needs for enterprise clients Work closely with cross-functional teams to align backend

make benefits our users, employees, partners, and, of course, our business We're looking for a Senior Backend ... scalable financial infrastructure You'll be part of a domain team where various engineering crafts (Backend ... area that delivers real value to hundreds of thousands of businesses across Europe Our tech stack: Backend ... experience architecting and evolving distributed systems in productionAt least 5 years of professional backend ... collaborating with frontend and mobile engineers to design elegant end-to-end solutionsAs a product-minded backend

Bridge Frontend & Backend: Collaborate closely with backend engineers on API contracts and end-to-end ... Basic backend knowledge (REST APIs, databases). ... Backend (for context): Node.js, TypeScript, NestJS. ... Experience working in a product team alongside designers, backend engineers and QA.

Задачи: Design, develop, test, deploy, and maintain backend services with teammate support Implement ... applications with modern programming languages and frameworks Understanding of backend software engineering ... technologies, tools, and best practices to improve engineering skills Требования: Experience building backend

Strong experience in designing and developing scalable backend systems and APIs. ... You will be a core member of multidisciplinary squads, combining your expertise in backend engineering ... What you will do Design, develop, and maintain backend systems and APIs that support AI solutions on ... What we're looking for +7 years of experience in backend development and/or software engineering, ideally ... Monitor system performance, troubleshoot and resolve issues related to backend services and AI model

You are a polyglot developer : You have experience in several coding languages (especially for backend ... Our stack is Ruby on Rails for the backend and React/React-native for the clients .

This is a full-stack role with roughly 80% backend, 20% frontend. ... Senior Product Engineer: Full-stack with 80% Backend About Longtail Longtail is building an intelligent ... help shape engineering standards and architecture as we grow What We're Looking For You're a strong backend ... What You'll Do Design and build backend services, APIs, and customer-facing capabilities: including conversational

Backend: comfortable diving into server-side logic to support frontend needs. ... You are a Seamless Full-Stacker: you don't believe in strict frontend/backend boundaries. ... You can effortlessly jump from tweaking mobile UI components to optimizing a backend resolver without ... Full-Stack Mobile) (m/w/d) to craft flawless mobile experiences while seamlessly tying them to a robust backend

specialized in Generative AI solutions and agentic architectures**, with experience in the development of backend ... Software Engineer specialized in Generative AI solutions and agentic architectures** with extensive backend ... data sources, within a governed platform prepared for production.#### Responsibilities* Development of backend ... systems, and production-ready AI platforms.#### Must Have Skills* 5+ years of experience in developing backend ... technologies* Familiarity with MLOps technologies* Conversational level English* Experience in development of backend