508 backend developer English-speaking jobs in Barcelona

Required Skills And Qualifications 3+ years of professional experience as a backend developer, with strong ... Advanced understanding of backend data validation, error handling, and API security. ... Drive data validation, error handling, and security best practices within backend services. ... Experience designing or evaluating experimental tooling and developer workflows. ... Job Description Job Title: Python Developer Job Type: Contract Location: Remote Job Summary In this role

Opportunity to make a direct impact on a rapidly scaling, developer‐focused platform. ... Product‐oriented mindset with the ability to create scalable internal tools and developer‐centric solutions ... position offers the chance to solve complex distributed systems challenges while contributing to a developer‐first ... We are currently looking for a Staff Product Engineer, Backend in Spain. ... Accountabilities Lead the architectural vision and technical direction for backend systems focused on

We are looking for a Backend Developer to join our HCM Localisation engineering team and help evolve ... This role is focused on building and maintaining scalable backend services using Scala 2.13 and Play ... days per week in our Barcelona office *** In this role you'll: Design, develop, and maintain robust backend ... Required Skills and Experience: Professional backend development experience, ideally in enterprise, SaaS ... Collaborate with frontend engineers, QA, product owners, solution designers, and other backend developers

Frontend Developer with .Net Skills (remote from Europe) As a Frontend Developer with .Net expertise, ... You will work across both frontend and backend stacks, implementing modern SPA frameworks, microservices ... automate tasks with npm Implement responsive UI with CSS, HTML, SASS, and Semantic UI Contribute to backend ... Vue.js and Typescript Minimum 1 year experience debugging Angular codebases 5+ years experience in backend ... within Europe, engaging in challenging projects that impact end-to-end solutions, from UI development to backend

data ingestion pipelines Define a clear vision, strategy, and execution path for reliable and scalable backend ... as a technical or platform PM Hands-on experience managing APIs, data pipelines, ETL/ELT systems, or backend ... collaborate with engineering leads, designers, and product teams to deliver reliable, scalable, and developer-friendly ... cross-functional teams to deliver exceptional results across performance, compliance, and usability Improve developer

This high-impact engineering role focuses on shaping how developers and AI agents interact with modern backend ... infrastructure and developer tooling. ... Opportunity to work on cutting‐edge AI‐native developer tooling. ... Experience building developer tools, platforms, or internal systems used by engineering teams. ... You will work at the intersection of AI systems, developer experience, and platform engineering in a

Are you our next Fullstack Developer? ... Role: Fullstack Developer (Mid / Senior)Location: Hybrid (Remote / Turin, Italy)The Mission: A Digital ... As our Fullstack Developer, you won't just write code, your work won't end up in a virtual drawer. ... Backend Engineering: Building and maintaining Lambda functions, ECS services, and REST APIs behind API ... Eye for Detail & Quality: A drive for polished UIs, optimized backend queries, and test coverage for

We are looking for an Expert Full Stack Developer who is passionate about building scalable, high-quality ... What you bring Several years of experience as a Full Stack Developer, delivering enterprise-grade web ... work across the entire software development lifecycle, designing and developing robust frontend and backend ... Proven expertise in backend development using Java and Spring Boot, as well as REST API design and integration ... Build and integrate frontend and backend components using modern frameworks, APIs, and cloud-native technologies

Freelance Senior OR Junior Full Stack Developer – React / Next.js / Node.js – Barcelona You will collaborate ... experience with React.js and Next.js Experience building and consuming REST APIs Good understanding of backend

complex systems, making technical decisions that improve scalability, reliability, maintainability, and developer ... 85% of the work focused on backend development and 15% on frontend development. ... Our team builds scalable, resilient products using Python/Django on the backend and React on the frontend ... You bring deep backend engineering expertise alongside the ability to contribute across the full stack ... What you need to succeed Full-Stack Expertise: This is a backend‐heavy full‐stack role, with approximately

AI-driven product Qualifications What we are looking for Required 3–5 years of experience as a Fullstack Developer ... What you will do Develop and maintain fullstack features using React (frontend) and Python (backend) ... Strong experience with React in frontend development Solid backend development experience with Python

services, tooling, and design system Ensure a great developer experience and continuously improve performance ... Whether you're shaping frontend architecture, contributing to backend services, maintaining our Design ... Core team to ship high-quality features quickly Contribute to and evolve our frontend architecture, backend ... Shadcn, Felte + zod Testing : Vitest (unit), Playwright (E2E) Design System : Custom-built (MeltUI) Backend ... fluent in TypeScript , comfortable with modern frontend frameworks, and able to contribute to Node.js backend

The role: We are looking for a Java Developer to join a small, high-ownership engineering team working ... Be involved in technical decisions, and step outside backend when the work calls for it. ... You will own backend architecture decisions and work closely with product and data to ship reliable, ... Own backend features and services end to end: design, build, ship, run, and fix in production, accountable ... Backend is your centre of gravity, but you go wider when it helps the team, and you collaborate naturally

As a Senior Java Developer , you will play a key role in the design, development, deployment, and operation ... You will be a core member of multidisciplinary squads, combining your backend development expertise with ... What we're looking for 7+ years of experience as a Backend Engineer working with Java (Java 11 or higher

Role overview As an AI & Content‐Recommendation Developer , you'll work with our Machine‐Learning and ... Backend teams to design, train, and deploy the models and data pipelines that decide "what to watch ... Basic knowledge of observability stacks (Prometheus, Grafana) Comfort with an additional backend language

Your Tasks Design, implement, and maintain backend services and tools using Go Develop and optimize our ... Write clean, maintainable code and participate in code reviews Your Profile Strong experience in Go for backend

Responsibilities Drive both full stack and backend development of the core platform Write code of the

Focus on performance, Core Web Vitals, and developer experience. ... Basic exposure to full‐stack work, even if your focus is mainly Backend or Frontend. ... What We're Looking For (Must‐Have) 5+ years of professional software engineering experience (Backend, ... building the systems and user experiences that power our sales‐automation platform, from high‐throughput backend

Join to apply for the Backend Engineer (Typescript) (50K€-65K€) role at Joppy We're hiring a Backend ... Your profile 3+ years of backend experience building production systems in Go or TypeScript. ... Engineer for our client — someone who'll own the backend systems that power our crypto and self‐custody ... What you'll do Design, implement, and operate scalable, resilient backend services handling millions

marketplace and bank aggregation, integrations, Public API), working with an engineering team that mixes backend ... Tools: You work with the public API documentation (open to partners without a Qonto account), the developer ... API and technical sensitivity (a plus): You have worked on an API, integration, platform or developer-facing