Empleos de senior java backend engineer en Barcelona

Allianz invites a Senior Solutions Engineer to join the Data and AI Transformation Engineering team, building scalable backend platforms exposing AI capabilities as reliable services. The role focuses on API-driven systems on Kubernetes, combining AI components with deterministic logic for complex transformation use cases in a regulated financial services...

At Roche you can show up as yourself, embraced for the unique qualities you bring. The PositionWho We AreAt Roche Diagnostics Solutions (RDS), our mission is clear: to diagnose earlier, develop faster, and personalize treatment because every patient is unique. Within Computational Science & Informatics (CSI), we are the bridge between our origin and our...

Role Description We are looking for a Senior Backend Developer to join our IT Digital Marketing team within the Digital Sales Hub in Barcelona.In this role, you will design, build, and continuously improve backend services, APIs, databases, and integrations that support our digital marketing and sales capabilities.You will develop scalable, secure, and...

Elastic is seeking a Senior Java Developer to join the Elasticsearch team and drive work on the Inference API, including integration with external ML providers and self-hosted models. You will maintain the plugin framework and REST API, collaborating across teams to design scalable, reliable systems in a distributed environment. The role emphasizes code...

Marfeel is a publishing intelligence platform that helps publishers turn data into action. Our international team, headquartered in Barcelona, is growing as we build real-time dashboards and scalable services for millions of users. We are looking for a Java Developer to join a small, high-ownership engineering team focusing on new product initiatives, while...

The Role We are looking for a Backend Engineer to join a small, high-ownership engineering team working on new product initiatives. You will be primarily focused on new product initiatives, building new services and features, though you may occasionally need to navigate existing codebases. You use AI coding tools as a core part of how you work, and you are...

SlashMobilitySlashMobility es una firma boutique tecnológica que está construyendo algo diferente a la consultoría tradicional. No queremos ser una fábrica de horas ni una consultora masiva. Desplácese hacia abajo para obtener una visión general completa de lo que requerirá este trabajo. ¿Ayudamos a grandes organizaciones a diseñar y construir...

SlashMobilitySlashMobility es una firma boutique tecnológica que está construyendo algo diferente a la consultoría tradicional. No queremos ser una fábrica de horas ni una consultora masiva. Desplácese hacia abajo para obtener una visión general completa de lo que requerirá este trabajo. ¿Ayudamos a grandes organizaciones a diseñar y construir...

About the role We're building a robust, internet-facing API that runs both in on-premises and in the cloud, designed to support future innovation at scale. This means solving complex distributed systems challenges, ensuring high availability, and optimizing performance. Concepts like the CAP theorem aren't just theory here—they're part of our daily...

SlashMobilitySlashMobility es una firma boutique tecnológica que está construyendo algo diferente a la consultoría tradicional. No queremos ser una fábrica de horas ni una consultora masiva. Estamos creando una casa para la Tecno Élite: profesionales que quieren trabajar con grandes corporaciones en retos reales, con equipos pequeños, muy buenos y con...

Lever, Inc. is seeking a Senior Software Developer (Node.js/Python) based in Spain. You will design, develop, and operate scalable backend services and AI-enabled components, collaborating with AI engineers and cross-functional teams to deliver production-grade APIs. You will own technical decisions, enforce coding standards, and mentor peers while working...

Pleo in Spain is seeking a Senior Backend Engineer for the Data Serving team, building the boundary between raw product data and consumers, including internal dashboards, AI agents, and customers. You'll own APIs, ensure low latency, collaborate with Data Engineers and Kotlin-based services, and focus on reliability, security, and scalable data delivery....

Desarrollador/a Backend Senior – Proyecto InternacionalPerfil requerido Buscamos un/a profesional con al menos 5 años de experiencia en desarrollo de aplicaciones web y microservicios, con dominio tanto en back-end con Java y Spring Boot, capaz de abordar soluciones end-to-end de complejidad media, y con una visión transversal de tecnologías....

Workato seeks a seasoned Go backend engineer to design and optimize distributed systems that power our runtime platform. You will tackle high-concurrency components, memory-sensitive paths, and performance-critical code, collaborating across teams to ensure reliability and scalability.This role emphasizes low-level engineering and robust concurrency handling...

We power people’s progress.At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it’s creating real impact.We’ve just reached unicorn status with a $150M...

Intellia is seeking a Senior Python Backend Engineer to design and build scalable backend services for agent-to-agent communication on AWS AgentCore platforms. You will work on Python-based backends, API integration, and asynchronous event-driven patterns to enable robust multi-agent interactions.The role emphasizes API design, registration and discovery...

We power people’s progress.At Preply, we’re all about creating life-changing learning experiences. We help people discover the magic of the perfect tutor, craft a personalised learning journey, and stay motivated to keep growing. Our approach is human-led, tech-enabled - and it’s creating real impact.We’ve just reached unicorn status with a $150M...

Java Senior Software Engineer - Prime (Hybrid)As you contemplate your future, you might be asking yourself, what’s the next step? Start your journey with us!We're seeking an experienced Java Senior Software Engineer to join our Prime team in Barcelona or Madrid (Hybrid), to develop and leverage the best e-commerce technology to create a one-stop-shop...

Java Senior Software Engineer - Prime (Hybrid)As you contemplate your future, you might be asking yourself, what’s the next step? Start your journey with us!We're seeking an experienced Java Senior Software Engineer to join our Prime team in Barcelona or Madrid (Hybrid), to develop and leverage the best e-commerce technology to create a one-stop-shop...

España - remoto10+ años de experienciaNivel de inglés: AvanzadoSólida experiencia práctica con Java, Spring Boot y Angular/TypeScript.Ingeniería de datos de principio a fin, incluyendo la ingesta, transformación y validación de datos, bases de datos relacionales, procesamiento analítico e, idealmente, datos geoespaciales.Integración de API REST,...