Empleos de senior java backend engineer en Zaragoza

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...

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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...

Super is a global technology group building The Playstack, powering sports, gaming and fan experiences across Europe and Latin America. We are seeking a Senior Backend Engineer to join the Player – Transact Tribe to shape scalable systems and drive platform-wide improvements. You will work on core platform components, cloud-native solutions, and...

Empresaconfidencial busca un/a Senior Backend AI Engineer para impulsar IA en productos ya en producción y desarrollar nuevas soluciones desde cero.Diseñarás servicios backend en Python, construirás pipelines RAG y integrarás APIs de LLM en entornos productivos, asegurando observabilidad y rendimiento. Trabajo 100% remoto desde España, con autonomía...

Rechat, Inc. is building the next generation of enterprise real estate technology. We seek a backend engineer who loves clean architecture and scalable data problems to support our CRM and Marketing platforms.This fully remote role requires deep Node.js and PostgreSQL expertise, with collaboration across cross-functional teams to ship high-impact features...

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...

Upsun is seeking a Senior Software Engineer to design and build the backend services behind our billing stack, including invoices, taxes, usage reporting, and external integrations. You will own complex components end to end, driving reliability and security while collaborating with Finance, Product, and Support. This hands-on role requires Go expertise,...

Nutrient is seeking a backend engineer who designs with the database in mind, building fast data models and scalable systems for large document workloads. You’ll shape Elixir/Phoenix-based services, optimize PostgreSQL usage, and contribute AI-driven tooling to accelerate engineering tasks.Work is fully remote and async-first, offering ownership of...

Semrush Development, S.L.U. is seeking a Senior Backend Developer to deliver enterprise BI dashboards. You will work across Python, Go, and SQL to ingest and present large-scale data with reliability and performance. You’ll build data pipelines, crawlers, and analytical workflows while deploying scalable services on Kubernetes. The role emphasizes...

Grupo TECDATA Engineering busca un Senior Backend Developer para un proyecto de larga duración en Madrid, con enfoque en desarrollo backend y evolución de sistemas existentes. Se valorará experiencia sólida en Java y Spring Boot, APIs REST y arquitecturas event-driven, además de historial trabajando con sistemas complejos y legacy.El perfil debe aportar...

The BOARD | people & talent is seeking an accomplished engineer to drive architecture across distributed systems and microservices. You will influence standards, design patterns, and engineering best practices while staying hands-on in a fast-moving team.We value deep Java expertise, experience with Kafka, and cloud-native delivery. Expect a remote-friendly...

A leading tech company in Spain is seeking new team members for a development role focusing on Java and Spring Boot. Ideal candidates should have at least 4 years of experience in these technologies and have responsibilities that include writing and optimizing SQL queries. With a hybrid work model, employees can work remotely or from one of the company's 24...

Grafana Labs is a fully remote company with a global team creating Grafana Cloud, a composable observability platform. We value open-source culture, transparency, autonomy, and trust, and we welcome applicants from multiple countries including Spain. You’ll work on a cloud-native stack (Go, Kubernetes) with on-call rotations, collaboration, and a focus on...

The Whiteam Consulting busca un/a Senior Software Developer para un equipo internacional responsable del mantenimiento, evolución y desarrollo de aplicaciones corporativas desplegadas en AWS Cloud. Se trabajará en proyectos internacionales con España y Bélgica, desarrollando soluciones cloud-native modernas y colaborando en iniciativas de mejora...

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...

Quik Hire Staffing is seeking a Senior Backend Engineer (Node.js, AWS) for a fully remote, full-time role. You will design, develop, and maintain scalable backend services for a high-traffic platform, collaborating with cross-functional teams to deliver low-latency solutions in a cloud-native environment. You will design and deploy Node.js microservices...

Skillwell is seeking a Senior Software Engineer to shepherd technical excellence and evolutionary architecture for our platform. You will apply TDD/BDD, refactor for maintainability, and drive CI/CD improvements with Jenkins, GitLab, or Bitbucket. Expect hands-on Java/Jakarta EE development, strong OOP/SOLID practices, and mentoring teammates through design...

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Desarrollador/a Backend Senior – Proyecto Internacional Perfil 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...