Empleos de java backend senior en Madrid

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...

Indra Group te invita a unirte como Software Java Engineer para participar en el desarrollo de Mando y Control C-UAS, sistemas críticos en Defensa. Buscamos perfiles con al menos 3 años de experiencia en Java y capacidad para trabajar en entornos complejos y distribuidos.Ofrecemos proyectos de larga duración, formación continua, plan de carrera y un...

LeoVegas Group in Málaga is seeking a Senior Backend Engineer to drive the Sportsbook backend architecture. You will collaborate with Staff Engineers, validate architectural decisions, and shape backend solutions, contributing to planning and feature development.You will own and implement scalable microservices, ensure reliability, and work with multiple...

Preply Inc. in Barcelona is seeking a Senior II Full-Stack Engineer (back-end heavy) to join a cross-functional team.You’ll design and evolve scalable back-end systems with Python/Django while contributing to frontend in React/TypeScript, balancing immediate product needs with long-term sustainability. The role is hybrid, with about 85% back-end focus and...

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...

Key responsibilitiesAs a Backend Engineer within Advanced Analytics (DA3) in the Chief Data & AI Office area at Allianz Partners, you will join our central AI team to build reusable AI foundations and production‑grade AI services on a global scale.We are looking for an engineer with strong software engineering fundamentals and hands‑on cloud and DevOps...

Abacum, the leading business planning platform, seeks a Senior Backend Engineer in the integrations team. You’ll move across languages and ecosystems, design and scale our integrations platform, and work with product, customers, and finance experts to translate complex workflows into robust software.You'll tackle data-heavy integration challenges, build...

Grafana Labs is hiring a Senior Backend Engineer focused on databases and Loki ingest for the Loki ecosystem. You will work in a remote, globally distributed team on Go-based services running in Kubernetes, delivering scalable telemetry databases and cloud services.You’ll influence roadmap, own features from ideation to production, and collaborate with...

Lever, Inc. is seeking a Senior Software Engineer to design, develop, and operate backend services powering an AI-enabled platform in the electric mobility space.You will build RESTful APIs using Node.Js, TypeScript, and Python, and own distributed systems and architecture. You will collaborate with AI engineers, product, frontend, QA, DevOps, and external...

ISAGRI in Spain is seeking a senior backend developer to join a fully remote engineering team focused on the LEX, EFACT and Agroptima platforms. You will work mainly on backend systems, with opportunities to contribute to frontend or infrastructure when needed.We value over 5 years of backend experience, microservices, and a passion for testing and pair...

Miratech is seeking a Senior Backend Engineer (Golang) to design and build scalable, reliable backend systems. You will develop distributed services, design robust APIs, and implement event-driven architectures, with occasional frontend support in React.The role emphasizes scalability, security, and maintainability, working on integrations with enterprise...

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 a...

ADEREN busca un perfil senior encargado de liderar técnicamente el mantenimiento correctivo y evolutivo de aplicaciones y portales. Se requiere experiencia en .NET 4.0 o superior, Umbraco y Drupal, con bases de datos relacionales y servicios SOAP/REST/WCF.El contrato es freelance full time con una oferta económica de 220–250 € por jornada + IVA, según...

Fliff Inc. is building an arena for rewards-driven entertainment, unblocking the economics of social games. We seek aSenior Python Engineer to drive backend integrations across KYC, geolocation, payments and external systems.You will own backend features from design through deployment, building scalable services in Python and Django while collaborating with...

Virtual Cave busca un Backend Technical Lead para liderar y coordinar equipos en proyectos desafiantes, con énfasis en backend escalable, fiable y seguro. Se requiere liderazgo, experiencia en Java y arquitecturas basadas en eventos, así como dominio de bases de datos y plataformas en la nube.Trabajo remoto 100% desde España, con flexibilidad horaria. La...

Proton is looking for an experienced backend-focused engineer to join The Foundation Team in Barcelona. You will work with PHP for API-related work and Rust for performance-critical components, owning libraries end-to-end from design to migration.You will help define architectural boundaries in a large monorepo, collaborate across product teams, and drive...

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...

T-Systems Iberia sucht eine/n Senior Backend Engineer mit Schwerpunkt System-Design und dem Aufbau produktiver Backend-Plattform-Services hinter AI-Inference-Endpunkten. Du treibst Architekturentscheidungen, entwickelst hochverfügbare, sichere Systeme, und arbeitest eng mit KI‑Infrastruktur- und Data‑Engineering-Teams zusammen.Du bringst umfangreiche...

Zooplus is seeking a Senior Backend Software Engineer (Python) to join the Mobile Apps Team in Madrid. You will drive features, collaborate with the product owner, area architect, and teammates to clarify needs and deliver scalable backend services powering the mobile apps for millions of customers.You will participate in design decisions, own parts of the...

Amaris Consulting busca un Backend/DevOps Engineer para trabajar en plataformas de banca digital escalables, seguras y resilientes. Formarás parte de squads multidisciplinares, operando servicios críticos durante el ciclo de vida del software.Se valora experiencia en Java/Kotlin con Spring Boot, microservicios, Docker/Kubernetes, CI/CD y entornos Azure....