41 backend developer English-speaking jobs in Barcelona

You will work primarily in Java on the backend, with growing involvement in TypeScript and React on the ... Must Haves 2 years of professional software engineering experience; Solid foundation in Java for backend ... leveraging modern tooling (including AI) where it adds value; Contribute across the stack — primarily backend ... frontend, integrating AI coding assistants like Claude Code and Codex into developer workflows. ... The role focuses on improving test reliability, coverage, and developer experience alongside a collaborative

ABOUT THE ROLE Join as a Senior Backend Developer (AdTech) to help build a next-generation advertising ... improvements; Drive architectural decisions and establish patterns that support scalability, reliability, and developer ... platform powered by scalable backend systems, real-time data processing, and distributed architectures ... MUST HAVES 5 years of software development experience building scalable systems (backend programming

ABOUT THE ROLE As a Backend Developer (Go), you will play a key role in modernizing a large‑scale platform ... This role focuses on building resilient backend foundations, influencing architectural decisions, and ... MUST HAVES Bachelor’s degree in Computer Science or related field; 5+ years of backend software development

compliance and efficiency in highly regulated The Role We are seeking a seasoned Senior Full-Stack Developer ... who bridges the gap between robust backend architecture and intuitive frontend interfaces. ... Key Responsibilities Backend Excellence: Design and implement scalable server‑side logic using Python ... Backend: Expert‑level proficiency in Python (Django, Flask, or FastAPI) and advanced SQL (PostgreSQL/

Drive continuous improvement in developer productivity and developer experience, ensuring high-quality ... Strong hands-on technical background (e.g., Backend Engineer) with the ability to lead cross-functional ... Your Profile: Experience Minimum 5 years of experience as Software Developer (JAVA) and almost 3 years

Improve maintainability, scalability, and developer experience in the codebase. ... Comfortable working across frontend, backend, and product concerns. ... This is not a pure visual frontend role, nor a backend-only platform role. ... The primary technologies are Angular on the frontend and NestJS on the backend. ... Develop and maintain backend services and APIs using NestJS and TypeScript.

Referrals increase your chances of interviewing at Talent-R by 2x Get notified about new Frontend Developer ... concepts is a plus (ability to collaborate effectively with backend engineers) Strong foundation in ... and maintain unit, integration, and end-to-end tests to ensure product reliability Integrate with backend ... Knowledge of build tools (Webpack, Nx, or similar) and version control (Git) Familiarity with Python or backend

Familiarity with AI-assisted coding environments and developer productivity tools. ... Experience integrating with backend services or APIs Familiarity with version control systems and CI/

The role will focus on backend systems, infrastructure, integrations, scalability, operational reliability ... reliability, observability, and system performance improvements Collaborate on APIs, integrations, backend ... architectural discussions Requirements Strong experience building and operating SaaS platforms Solid backend ... overengineering Pragmatic decision-maker focused on execution and reliability Comfortable working across backend

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

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

Senior Software Engineer specializing in backend development using Kotlin/Java, DDD, TDD, Event Sourcing, and Event-Driven Architecture. Must have expertise in Event Sourcing and TDD, write clean code, and communicate technical concepts effectively.

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

You will contribute to both frontend and backend systems, helping ship high quality software that is ... maintain fullstack features across the products Work with React on the frontend and Node.js on the backend

From high-performing APIs to backend algorithms, integration frameworks, to guaranteeing data privacy ... You’ve worked with a variety of web APIs and developed backend services using modern OOP practices. ... a high-velocity engineer who thrives in dynamic environments—someone who can iterate quickly, build backend ... However, this role is more heavily focused on backend development, but will have some frontend development ... Proficient in English Tech stack Our systems are built in Ruby on Rails, PostgreSQL and Redis on the backend

What you will do Lead backend development: design, implement, and maintain scalable backend systems in ... Python; Contribute across the stack: while backend is the main focus, be open to occasional frontend ... About the role This role offers the chance to lead backend development and shape a next-generation AI-powered

What You’ll Build You’ll work across backend systems, infrastructure, APIs, internal tooling, and product ... , frontend, and infrastructure Experience with Go, TypeScript, or another strongly typed backend language ... software engineering experience Strong production ownership experience Full-stack capabilities across backend

Full Stack Developer As a Full Stack Developer you will join the Global Custom Software Solutions team

About the Role Senior Full Stack Engineer responsible for developing and maintaining backend and frontend ... What You Will Do Develop and maintain backend and frontend platform components Participate in architecture

From high-performing APIs to backend algorithms, integration frameworks, to guaranteeing data privacy ... You’ve worked with a variety of web APIs and developed backend services using modern OOP practices. ... However, this role is more heavily focused on backend development, but will have some frontend development ... Proficient in English Tech stack Our systems are built in Ruby on Rails, PostgreSQL and Redis on the backend