Empleos de senior java backend engineer en Madrid

We’re a London-based fintech on a mission to make ETF investing simple and accessible. Over 150,000 clients have trusted us with over £3 billion in assets - and we’re just getting started. We’ve been featured by MoneyWeek, Finder and Forbes, and we’re growing fast with big ambitions. About the Role We’re looking for a Senior Backend Engineer to...

Kairós Digital Solutions SL busca un/a Lead Backend Engineer para liderar la modernización de sistemas críticos y la migración de arquitecturas legacy. Serás Tech Lead de referencia, orientando a otros ingenieros e influyendo en decisiones técnicas transversales. Trabajarás con Java 21 y Spring Boot, junto a Kafka y plataformas Cloud (AWS/GCP), IaC y...

Pearson is seeking an experienced Senior Software Developer to design and deliver backend components for digital learning products. You will partner with product teams to set objectives, define timelines, and implement scalable services with AI integration across cloud environments. This role emphasizes autonomy, ownership, and collaboration within a...

Pearson is seeking a highly autonomous Senior Software Developer to join our AI-enabled English language learning platform. You’ll design and deliver scalable backend services and APIs, integrate AI models, and guide the full software lifecycle with DevOps and Clean Code practices. Based in a hybrid setup, this role requires strong collaboration with...

Description: This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a (Senior) Product Engineer (Backend) based in Spain. As a backend-focused Product Engineer, you’ll play a key role in building reliable, scalable SaaS products that directly improve the way frontline employees work....

About The Company Scrambly is one of the fastest-growing adtech startups in the world, featured in the AppsFlyer Performance Index and Singular ROI Index in just 3.5 years. We’re growing 250%+ YoY across revenue, team, product, and technology - fully bootstrapped and profitable. We’re building the future of app discovery: a reward-powered alternative to...

Intellias is partnering with a Fortune 100 Midwest-based industrial manufacturer to modernize cloud-based services and data products used globally. The role is remote from Spain, requiring a 6-hour overlap with US Central Time. You will design, build, and deploy scalable backend services in production, leveraging Scala, Akka/Pekko, AWS, and event-driven...

Pearson is seeking a Senior Software Developer to join the English Language Learning division, delivering AI-enabled backend services and scalable APIs. You’ll lead design, implement features, and collaborate with product teams to drive innovation in real-world learning products. The role requires autonomy, strong Python and cloud experience, and a passion...

Pearson is seeking a highly autonomous Senior Backend Engineer to design, implement, and scale backend services for AI-enabled digital products. You will collaborate across teams to define requirements and timelines while advancing DevOps, Clean Code, and DDD practices. The role emphasizes secure, scalable architectures and mentoring junior engineers. The...

Pearson is seeking an experienced Senior Software Developer to design and deliver AI-enabled backend services for our digital products. You will partner with product owners, lead backend projects, and architect scalable APIs, focusing on microservices deployment and AI integration. This full-time, hybrid role supports collaboration from Madrid or Poznań...

Pearson is seeking a Senior Software Developer to help design and deliver AI-enabled backend services for our digital learning products. You’ll join an international team to build scalable solutions, implement microservices, and drive DevOps practices across the lifecycle. The ideal candidate has strong Python skills, cloud experience (AWS/GCP/Azure), and...

Elastic, the Search AI Company, enables everyone to find the answers they need in real time, using all their data, at scale — unleashing the potential of businesses and people. The Elastic Search AI Platform, used by more than 50% of the Fortune 500, brings together the precision of search and the intelligence of AI to enable everyone to accelerate the...

Crew buscaAnalista Programador/a Senior para liderar el desarrollo backend con Spring Boot. El proyecto se basa en microservicios, usando Java, JPA/Hibernate y PostgreSQL, con seguridad mediante OAuth2 y JWT. Se valora experiencia en APIs REST y despliegue en AWS, trabajando en un entorno técnico avanzado. El candidato ideal tendrá capacidad para...

Pearson is seeking a highly autonomous Senior Software Developer to design and implement backend components for AI-enabled digital products. You will lead architecture, API design, and deployment of scalable microservices, collaborating with data science teams to operationalize AI models. This role emphasizes ownership, DevOps practices, and adherence to...

Pearson is hiring a Senior Software Developer to design and deliver backend components for AI-enabled educational products. You will work in cross-functional teams to implement scalable services, APIs, and microservices while integrating AI capabilities and maintaining strong technical documentation. The role emphasizes autonomy, ownership, and collaboration...

Kraken is expanding its Agent Systems team to build AI-powered agents that automate internal workflows across our platform. You will design, prototype, and productionize backend services that reason over user interactions and integrate with multiple internal APIs. We value strong backend fundamentals, distributed systems thinking, and hands-on AI/ML...

Your mission As a Senior Backend Engineer at Playtomic, you will be responsible for developing robust and scalable solutions for our product, ensuring high performance, consistent and secure transactions. In Playtomic we operate in pods. A pod is a small, cross-functional team that owns a domain end-to-end: it takes a framed problem, makes the key...

Are you a versatile, curious engineer who thinks in solutions rather than stacks? At Swiss Re, we build technology with real purpose and we are looking for a Senior Backend Engineer to help shape the next stage of our engineering journey. **About The Role** Within our IT Resilience unit, we develop the platforms, integrations and capabilities that help...

Knowmad Mood busca un perfil de desarrollo backend senior con más de 6 años de experiencia para diseñar y evolucionar soluciones basadas en microservicios, Java y Spring en un entorno tecnológico avanzado, orientado a IA y soluciones escalables. Trabajarás en APIs REST, arquitectura hexagonal, pruebas y DevOps (CI/CD, Kubernetes). Ofrecemos contrato...

Elastic is seeking a Senior Java Developer to join the Elasticsearch team and drive the Inference API. You will build and maintain the plugin framework and REST API, collaborating with the inference team and the Kibana team to deliver scalable, reliable software across Elastic's cloud and hosted environments. Ideal candidates bring 5+ years of production...