878 backend developer English-speaking jobs in Madrid

Madrid, Spain Responsibilities Design, develop, and maintain automated test frameworks for UI, API, and backend ... of JavaScript/TypeScript or Java Experience testing modern web applications, REST/GraphQL APIs, and backend

Senior Software Engineer (Backend - Rust) Si cree que es el candidato ideal para la siguiente oportunidad ... Responsibilities Design and build backend services and shared libraries in Rust Design and operate ... This role is ideal for engineers who enjoy designing scalable backend systems, solving complex technical ... base Overview A high-scale technology platform is looking for experienced Rust engineers to join a backend ... microservices architectures Event-driven systems and Kafka g RPC and high-throughput APIs Large-scale backend

Experience with FastAPI for backend development. ... We are currently seeking a Data Engineer/Developer with strong experience in Python and Power BI to join

They are looking for a Business Developer to lead their commercial efforts! ... Darwin Space are hiring for a Business Developer on behalf of a business in Madrid, Spain. ... responsible for setting up their sales team, with the ultimate goal into moving into the “Head of Business Developer

Optimise backend systems for performance, reliability, security, and fault tolerance. ... Required Qualifications 5–6+ years of experience as a Senior or Lead Backend Engineer. ... Conduct thorough code reviews, mentor other engineers, and raise overall backend engineering quality. ... You will play a key role in designing and evolving the backend foundations of a decentralized cloud platform ... Industry Cloud Computing / AI / European Deep-Tech SaaS About The Role We are seeking a Senior / Lead Backend

Optimize backend systems for performance, reliability, security, and fault tolerance. ... Required Qualifications 5–6+ years of experience as a Senior or Lead Backend Engineer. ... We are seeking a Senior / Lead Backend Engineer (Staff-level mindset) with strong expertise in Go and ... Conduct thorough code reviews, mentor other engineers, and raise overall backend engineering quality. ... You will play a key role in designing and evolving the backend foundations of a decentralized cloud platform

Tasks You’ll shape our core AI framework and backend, taking full ownership of backend features. ... More specifically, you will: Build robust backend services for AI systems (RAG, model orchestration ... platforms Familiar with CI/CD, Git workflows, and agile methodologies Bonus: familiarity with other backend ... experience (or strong familiarity) with AI/ML integration (LLMs, RAG, or similar) Solid understanding of backend

Software Developer Madrid The Role: Hiring for a Software Developer. ... The selected Software Developer for this role will have the opportunity to contribute to growing products ... The Successful Software Developer will have experience in this tech stack: Strong programming skills ... What the Successful Software Developer can expect from their duties within the role: Designing, developing ... Benefits The successful Software Developer will benefit from: Discretionary bonus plan based on performance

We’re hiring a Staff Backend Engineer to join the Treasury Management team. ... You will help set technical direction and deliver resilient backend systems that help customers optimise ... and reliability What You’ll Be Doing Drive initiatives to design, build, and maintain scalable backend ... the technical part of cross-team initiatives Set technical direction for key parts of the Treasury backend ... coding a meaningful part of the time You’ll Bring Solid Experience With Designing and maintaining backend

Job Responsibilities Be responsible for the daily configuration and operation of backend systems in the ... Familiar with backend systems such as product, promotion, inventory, and order management, with the ability

Strong expertise in both frontend and backend development technologies. ... Architect advanced Node.js solutions for scalable backend systems and APIs. ... Lead full-stack development initiatives for complex frontend and backend systems. ... seeking a Principal JavaScript Engineer with deep expertise in JavaScript development, Node.js, frontend/backend ... decisions, and mentor engineering teams while delivering cutting-edge solutions for complex frontend and backend

They are looking for a Senior Java Developer to join on an initial 3-month contract (autonomo), with ... The Role As a Senior Java Developer, you'll play a key role in designing, building, and maintaining

Proactive learner with pragmatic adoption of AI‑assisted developer tools (GitHub Copilot, Claude Code ... You will work in a cross-functional environment with Backend Engineers, ML Engineers, AI Architects, ... Collaborate with Platform Architects, Backend Engineers, and ML Engineers to translate architecture designs

About the role As a Senior Backend Software Engineer, you will be responsible for the design, development

Summary Ruby on Rails powers Toptal’s public-facing web presence, and we’re looking for a sharp Ruby developer

The job We are looking for engineers with experience working with any backend technology, you will be

About the role We’re looking for a Senior Backend Engineer to join our team at Pleo. ... In this role, you’ll help build and scale our backend systems and be part of exciting projects as we ... What you’ll be doing As a Senior Backend Engineer, you will: Lead initiatives to design, build, and ... How you’ll develop in this role In your first six months at Pleo, you’ll: Lead backend initiatives

Senior Backend Engineer needed for production application development and maintenance. Expert-level Node.js, TypeScript, and REST/GraphQL API experience required. Strong understanding of microservices, message queues, and cloud platforms (AWS/Google Cloud/Azure). Leadership, mentorship, and excellent communication skills essential.

Backend Software Engineer • Madrid, Madrid, Spain #J-18808-Ljbffr

Strong backend development skills in Java. ... We’re looking for a Backend Java Engineer to join our growing technology hub in Madrid. ... Experience designing and developing RESTful APIs and integrating with backend services. ... Computer Science, Engineering, or a related technical field. 3+ years of hands‑on experience as a Backend