Backend Fullstack Developer Java Jobs in Spain

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Senior .NET Backend Engineer — Hybrid & Flexible

Hitachi Energy in Madrid is looking for a .NET Backend Developer to design and develop high-performance, scalable systems and APIs. You'll collaborate with frontend teams and ensure code quality through reviews and documentation. A Bachelor's degree in Computer Science and over 5 years of experience with C# and ...

Platform API Engineer (Backend) – TTS & Cloud (Remote)

Clutch Canada is seeking a Backend Developer to design and maintain robust APIs within a dynamic and innovative team. The ideal candidate must have proven experience with TS/Node and cloud platforms like GCP, AWS, or Azure. This role offers autonomy and the chance to significantly impact the evolution of audio t ...

Senior Frontend Heavy Full Stack Engineer

A leading educational technology company located in Barcelona is seeking a Full-Stack Developer to design user-facing features with React and TypeScript while also developing backend capabilities in Python. The ideal candidate will possess strong front-end skills and a collaborative spirit, contributing to a cul ...

Senior Backend Engineer Node.js AI Chat Platform (Hybrid Madrid)

A technology company in Madrid is seeking an experienced Senior Full Stack Developer to join its team. You'll take ownership of the backend architecture for a sophisticated AI chat platform, integrating multiple AI providers. The role requires expertise in Node.js and database optimization with MongoDB and Postg ...

Senior C++ Backend Engineer, Market Data (Finance)

A leading financial services company in Madrid seeks an experienced developer to join its dynamic team. You will work on innovative market data distribution services for Spanish and Swiss Stock Exchanges, focusing on backend application development using C++ and Linux. The ideal candidate has over 5 years of exp ...

Senior Node.js Backend Engineer — Express & PostgreSQL

Capitole in Vitoria, Spain is seeking a Back-End Node.js and ExpressJS Developer with at least 7 years of experience. The role involves platform maintenance and implementing new features in an agile environment, primarily using Node.js. Strong expertise in JavaScript and experience with PostgreSQL are essential. ...

Platform Engineer (GCP, Kubernetes, GitOps)

A leading remote sensing company in Spain seeks a DevOps engineer to drive cloud-native infrastructure and enable developer autonomy. The role involves maintaining tools like Terraform and Kubernetes while contributing to backend services. Candidates should have 3–5+ years of experience, strong Python skills, an ...

Senior Full Stack Engineer AI Driven Security Platform

A leading cybersecurity firm is seeking a Sr. Software Developer (Full-Stack) to join their Barcelona team. You'll design and develop both frontend and backend features for our Mobile Application Security Platform. The ideal candidate has over 5 years in software development, strong experience with RESTful APIs, ...

NodeJS Backend Engineer — Hybrid (Madrid Norte)

Una empresa tecnológica en crecimiento busca un NodeJS Developer para unirse a su equipo en modalidad híbrida en la zona norte de Madrid. Se requiere experiencia de 2 a 4 años en desarrollo backend con NodeJS, conocimiento de AWS, y bases de datos como PostgreSQL y MongoDB. Valoramos experiencia en GIS y tecnolo ...

NodeJS Backend Engineer — Hybrid (Madrid Norte)

Una empresa tecnológica en crecimiento busca un NodeJS Developer para unirse a su equipo en modalidad híbrida en la zona norte de Madrid. Se requiere experiencia de 2 a 4 años en desarrollo backend con NodeJS, conocimiento de AWS, y bases de datos como PostgreSQL y MongoDB. Valoramos experiencia en GIS y tecnolo ...

NodeJS Backend Engineer — Hybrid (Madrid Norte)

Una empresa tecnológica en crecimiento busca un NodeJS Developer para unirse a su equipo en modalidad híbrida en la zona norte de Madrid. Se requiere experiencia de 2 a 4 años en desarrollo backend con NodeJS, conocimiento de AWS, y bases de datos como PostgreSQL y MongoDB. Valoramos experiencia en GIS y tecnolo ...

NodeJS Backend Engineer — Hybrid (Madrid Norte)

Una empresa tecnológica en crecimiento busca un NodeJS Developer para unirse a su equipo en modalidad híbrida en la zona norte de Madrid. Se requiere experiencia de 2 a 4 años en desarrollo backend con NodeJS, conocimiento de AWS, y bases de datos como PostgreSQL y MongoDB. Valoramos experiencia en GIS y tecnolo ...

Senior C++ Backend Engineer, Market Data (Finance)

A leading financial services company in Madrid seeks an experienced developer to join its dynamic team. You will work on innovative market data distribution services for Spanish and Swiss Stock Exchanges, focusing on backend application development using C++ and Linux. The ideal candidate has over 5 years of exp ...

Senior .NET Backend Engineer — Hybrid & Flexible

Hitachi Energy in Madrid is looking for a .NET Backend Developer to design and develop high-performance, scalable systems and APIs. You'll collaborate with frontend teams and ensure code quality through reviews and documentation. A Bachelor's degree in Computer Science and over 5 years of experience with C# and ...

Senior Backend Engineer Node.js AI Chat Platform (Hybrid Madrid)

A technology company in Madrid is seeking an experienced Senior Full Stack Developer to join its team. You'll take ownership of the backend architecture for a sophisticated AI chat platform, integrating multiple AI providers. The role requires expertise in Node.js and database optimization with MongoDB and Postg ...

Senior Frontend Heavy Full Stack Engineer

A leading educational technology company located in Barcelona is seeking a Full-Stack Developer to design user-facing features with React and TypeScript while also developing backend capabilities in Python. The ideal candidate will possess strong front-end skills and a collaborative spirit, contributing to a cul ...

Platform API Engineer (Backend) – TTS & Cloud (Remote)

Clutch Canada is seeking a Backend Developer to design and maintain robust APIs within a dynamic and innovative team. The ideal candidate must have proven experience with TS/Node and cloud platforms like GCP, AWS, or Azure. This role offers autonomy and the chance to significantly impact the evolution of audio t ...

Flutter Mobile Engineer Banking App

A financial technology company in Valencia is seeking a Flutter Developer to build and maintain cross-platform mobile applications for their banking platform. The role involves developing Flutter-based apps, integrating with backend services, and optimizing performance. Candidates should have over 2 years of Flu ...

Remote Platform Engineering Lead

A leading technology company in Madrid is seeking an Engineering Lead to join their Platform squad. This role involves ownership of the infrastructure and developer tools, providing technical leadership, and developing scalable APIs. The ideal candidate has substantial experience in Ruby on Rails, a strong under ...

AI Driven Python Backend Engineer for Document Pipelines

A global technology company based in Barcelona is seeking a passionate Python Backend Developer to join their AI team. This hybrid position involves converting unstructured PDFs into editable formats while optimizing document processing using advanced AI techniques. Candidates should have expert Python skills an ...

Senior Kotlin Backend Engineer — Cloud & DevOps

A leading electronics retailer in Spain seeks a software developer to join its Global Loyalty team. This role involves designing robust backend services using Kotlin and managing scalable cloud applications on Google Cloud. Candidates should have over 5 years of experience and be familiar with tools like Docker, ...

Frontend Developer React/Next.js | Hybrid Role

Una empresa de tecnología en España busca un/a Frontend Developer para su equipo. Este rol incluye trabajar en proyectos innovadores, colaborar con equipos de diseño y backend, y mejorar interfaces. Se requiere experiencia mínima de 3-4 años en desarrollo front-end, dominio de herramientas como HTML, CSS, JavaSc ...

.NET Backend Dev for Intelligence Systems

GMV Spain is looking for a .NET Software Developer to join their team in Madrid, focusing on projects in the Defense & Security sector. The position involves backend development using .NET and C#, API design, and working with SQL and NoSQL databases. Candidates should have a relevant technical qualification and ...

Senior Node.js Backend Engineer — Express & PostgreSQL

Capitole in Vitoria, Spain is seeking a Back-End Node.js and ExpressJS Developer with at least 7 years of experience. The role involves platform maintenance and implementing new features in an agile environment, primarily using Node.js. Strong expertise in JavaScript and experience with PostgreSQL are essential. ...

Senior Node.js Backend Engineer — Express & PostgreSQL

Capitole in Vitoria, Spain is seeking a Back-End Node.js and ExpressJS Developer with at least 7 years of experience. The role involves platform maintenance and implementing new features in an agile environment, primarily using Node.js. Strong expertise in JavaScript and experience with PostgreSQL are essential. ...

Remote MuleSoft API Engineer (Anypoint)

Amaris Consulting, located in Monterroso, Spain, is seeking a freelance MuleSoft Developer to join their international team. The successful candidate will design and develop APIs, integrate backend systems, and contribute to a dynamic, agile environment. This role offers opportunities for rapid career growth, pr ...

Remote MuleSoft API Engineer (Anypoint)

Amaris Consulting, located in Monterroso, Spain, is seeking a freelance MuleSoft Developer to join their international team. The successful candidate will design and develop APIs, integrate backend systems, and contribute to a dynamic, agile environment. This role offers opportunities for rapid career growth, pr ...

Senior .NET Backend Engineer — Microservices & Azure

Tata Consultancy Services seeks a seasoned .NET Developer to join the team in Madrid. The role involves designing and maintaining backend services using C# and .NET within a microservices and event-driven architecture. Ideal candidates will have 8+ years of experience with strong expertise in Azure services, SQL ...

Senior Kotlin Backend Engineer — Remote & Flexible

Volkswagen Digital:Hub in Valencia is looking for a Backend Developer with at least 4 years of experience, including 2 years in Kotlin. Responsibilities include developing web applications, collaborating with teams, and mentoring junior developers. The role offers fully remote work options, professional developm ...

Software Development Engineer III

JAVA DEVELOPER Who We Are Solera is a global leader in data and software services that strives to transform every touchpoint of the vehicle lifecycle into a connected digital experience. In addition, we provide products and services to protect life’s other most important assets: our hom ...

Software Development Engineer III

JAVA DEVELOPERWho We AreSolera is a global leader in data and software services that strives to transform every touchpoint of the vehicle lifecycle into a connected digital experience. In addition, we provide products and services to protect life’s other most important assets: our ...

Software Development Engineer III

JAVA DEVELOPERWho We AreSolera is a global leader in data and software services that strives to transform every touchpoint of the vehicle lifecycle into a connected digital experience. In addition, we provide products and services to protect life’s other most important assets: our ...

Software Architect – EDF EYE Project (Defense Sector)

Buscamos un/a Arquitecto/a de Software Senior para integrarse en el proyecto europeo EDF EYE . Tu misión será liderar el diseño técnico y la evolución de arquitecturas backend de alto rendimiento para sistemas de defensa de próxima generación. Trabajarás en un entorno de alta complejidad téc ...

Software Architect – EDF EYE Project (Defense Sector)

Buscamos un/a Arquitecto/a de Software Senior para integrarse en el proyecto europeo EDF EYE . Tu misión será liderar el diseño técnico y la evolución de arquitecturas backend de alto rendimiento para sistemas de defensa de próxima generación. Trabajarás en un entorno de alta complejidad técnic ...

Senior Go Backend Platform Engineer

A leading cybersecurity company in Spain is seeking a Senior Software Developer to enhance its Core Platform services. This role involves designing, maintaining backend services, and making architectural decisions with an emphasis on scalability and reliability. The ideal candidate has 5+ years of software devel ...

Senior Backend Engineer: FastAPI Microservices & Tools

A global customer experience leader in Spain is seeking a Senior Back-End Software Developer to enhance their Common Tools team. This role involves building and maintaining backend service templates, developing shared microservices using Python and FastAPI, and enforcing quality standards in production. The idea ...

Full Stack .NET Engineer – APIs, Frontend & AI Tools

A leading tech company in Spain is seeking a Full-Stack Developer to design and develop backend services and APIs using .NET (C#). The ideal candidate will have strong .NET/C# experience, API development skills, and the ability to work independently. Responsibilities include building RESTful APIs, ensuring code ...

IoT Backend Engineer – Cloud & Microservices (AWS)

Una empresa innovadora en España busca un/a Backend Developer para un entorno IoT y arquitecturas cloud. El candidato ideal tendrá al menos 4 años de experiencia y conocimientos sólidos en AWS, Docker y CI/CD. Ofrecemos un contrato indefinido, horario flexible y proyecciones de carrera personalizadas. Los benefi ...

Remote PHP Backend Engineer — Symfony/Laravel | 4 Day Week

A leading Virtual Sports company in Spain is looking for a Back-end Developer to design, develop, and maintain backend code for virtual sports games. The ideal candidate should have experience in OOP, MySQL, and PHP frameworks like Symfony. This fully remote position offers a 4-day work week, flexible hours, and ...

Tech Lead Backend – Medios de Pago (Remoto)

Una consultora de tecnología busca un/a Tech Lead Backend para liderar el desarrollo de soluciones de pago. El candidato ideal debe tener más de 5 años de experiencia, dominio de Java y Spring Boot, y capacidad para guiar a un equipo en un entorno 100% remoto. Ofrecemos un entorno estable y una serie de benefici ...

Backend Engineer — Driver Onboarding Platform

A leading European mobility service provider in Barcelona is looking for a passionate Backend Engineer to join their Driver Onboarding team. You will design and implement an efficient onboarding journey while collaborating in a highly skilled cross-functional team. You should have expertise in Kotlin or Java and ...

Arquitecto Java Cloud Native: Lidera microservicios

Una empresa de tecnología busca un desarrollador backend experimentado en Barcelona. El candidato ideal debe tener al menos 3 años de experiencia en Java y Spring, y ser experto en arquitecturas Cloud Native y microservicios. Se ofrece un entorno de trabajo híbrido que combina trabajo presencial y teletrabajo. A ...

Staff Backend Engineer, Performance & Scalability (Hybrid)

A leading gaming company in Málaga is searching for a Sports Staff Backend Engineer to enhance their performance and scalability of their betting platform. This role demands 8+ years of software development experience focusing on Java and Spring Boot. You will work alongside Principal Architects and other teams, ...

Backend Engineer, Risk Lifecycle — Secure Banking

A leading fintech company based in Barcelona is seeking a talented Backend Engineer to enhance their product using Java and Kotlin within a microservice architecture. The ideal candidate will manage software development processes and contribute to design and deployment while collaborating with a diverse team. Th ...

Senior QA Automation Backend Engineer E2E & Microservices

Babel busca un/a QA Automation Engineer Backend en Madrid para unirse a su equipo ágil. Este rol implica la automatización de pruebas E2E, definir métricas de calidad y colaborar con múltiples equipos para asegurar entregas robustas. Se requieren conocimientos de herramientas como Xray, Jira, y Karate, así como ...

6 Month Tech Internship: Learn, Build & Collaborate

Cívica busca un pasante para unirse a su equipo en Granada durante 6 meses, trabajando en un entorno de desarrollo colaborativo. Las funciones incluyen el diseño de procesos para la transformación de datos y su explotación analítica. Se requiere una actitud positiva, conocimientos en desarrollo Backend (Java/.Ne ...

Hybrid Aerospace Software Engineer – Space Surveillance

GMV, a well-established technology group, is seeking an Aerospace Software Engineer to join their team in Tres Cantos, Spain. This role involves designing, developing, and maintaining software for space surveillance and tracking systems. The ideal candidate will have solid experience in backend development using ...

Space Software Engineer (Java/C/C++, Vue.js) — Hybrid

Indra in Tres Cantos, Spain, is seeking a Software Engineer for space projects involving the European Space Agency. The role involves developing software solutions across frontend and backend, optimizing databases, and collaborating with international teams. Candidates should have a relevant degree, 3–5 years of ...

Remote Senior Backend Engineer — Greenfield APIs

IT Partner busca un Backend Senior Engineer para participar en un emocionante proyecto greenfield en Madrid, España. El candidato ideal tendrá al menos 5 años de experiencia y habilidades avanzadas en Java, Springboot, y Git. Se requiere inglés fluido y conocimientos en CI/CD y OpenAPI. La posición ofrece un ent ...

Senior Backend Engineer | WSO2 & Integration Platforms

Una empresa internacional de tecnología busca un perfil senior engineer con experiencia en desarrollo backend y conocimientos en WSO2. Ofrecen un ambiente de trabajo híbrido y flexible, desarrollo de carrera a través de una formación adaptada y beneficios sociales competitivos. Se valora experiencia en proyectos ...

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    Backend Fullstack Developer Java Jobs in Spain Job Search Guide, Trends and Insights