Empleos de senior java backend engineer microservices en Madrid

Apipana.io en Sevilla busca un Senior Software Engineer para diseñar y desarrollar soluciones backend escalables, robustas y mantenibles, asegurando altos estándares técnicos. Serás nexo entre engenharia y arquitectura del cliente, traduciendo requisitos de negocio en soluciones técnicas viables y liderando decisiones de diseño. Trabajarás con...

Sage is seeking a Senior Backend Developer to join our HCM localisation team based in Barcelona. In this hybrid role, you will design and maintain scalable backend services for our cloud-based enterprise product. Strong expertise in Scala, MySQL, and AWS is required. The candidate will work collaboratively to improve product performance and maintain robust...

Clarivate is seeking a Senior Software Engineer for AI Product Development to join the Cortellis CMC team in Barcelona. This permanent full-time role involves the design and implementation of backend services, with a focus on AI capabilities and scalability. Candidates should have a Bachelor’s degree in a related field and over 5 years of experience in...

Grafana Labs is the company behind Grafana Cloud, the fully managed observability platform trusted by more than 10,000 organizations to ensure reliability, resolve incidents faster, and optimize telemetry at scale. Built on open source and open standards and designed for interoperability across any stack, Grafana Cloud brings AI to observability and...

Urban Sports Club in Valencia is seeking a Senior Backend Engineer to enhance our technology offerings. In this role, you'll architect and develop impactful Golang and PHP services, collaborating with cross-functional teams to foster an outstanding wellbeing experience. Ideal candidates will have over 5 years of backend engineering experience, demonstrating...

Playtomic is seeking a Senior Backend Engineer to build robust, scalable APIs and services. You will own your domain end-to-end, balancing technical excellence with business impact while collaborating with product, design, and frontend teams. You will work in a fast-paced, pod-based environment, shipping production-ready software and integrating AI-assisted...

Actual Talentis a talent acquisition consultancy that offers Specialized Search, RPO and Talent Solutions.Our purpose is to drive the growth and fulfillment of individuals and organizations. We facilitate individuals in finding inspiring opportunities and help organizations discover professionals who will take them to the next level. We do this through...

Ciklum in Málaga, Spain, is seeking a Senior Python Engineer to join a cross-functional team building backend features. You will implement AI on the client's internal platform, support high-quality code, and collaborate across planning, development, testing, and deployment. The role emphasizes PostgreSQL design, Alembic migrations, and REST API work, with a...

Mambu Payments (formerly Numeral) is hiring Senior Backend Software Engineers to help build the next generation of bank connectivity and payment automation products with a focus on security, stability and performance. You will own architectural decisions for high-impact projects, collaborate with Product Managers and DevOps, mentor engineers, and contribute...

Ebury’s FinCore Engineering team in Madrid seeks a Senior Software Engineer to modernize our FX engine, reduce technical debt, and build high-throughput, regulated backend systems. You will influence platform architecture and own end-to-end delivery across a distributed cross-border team across Europe and beyond. The role focuses on Python with strong OO...

Vortech PCI Group busca un/a Senior Backend Developer para unirse a un nuevo hub de Inteligencia Artificial Generativa en Valencia, dentro de una organización internacional del sector financiero. La persona seleccionada participará desde el inicio en la definición y construcción de una plataforma de Agentic AI sobre Azure, contribuyendo a decisiones de...

IFS in Madrid, MD, ES is seeking a Senior Software Engineer, AI Agents to build the AI-driven backend powering enterprise workflows on site in Madrid. You will develop the session and memory model, retrieval, and agentic flows for multi-step work. You will implement multi-tenant SaaS capabilities, ensure secure integration with API gateways, and optimize for...

MotorK is seeking skilled engineers to join MotorK Ultra, an elite unit building scalable backend systems across Europe. The role emphasizes clean architecture, AI-driven problem solving, and high autonomy in a fast-moving, low-bureaucracy environment. You will work with PHP/Node.js/Java, modern frontend stacks (Vue/React/Angular), and AWS, contributing to a...

Pleo is seeking a Senior Backend Engineer to join the Data Serving team that owns the production‑grade boundary between Pleo's raw product data and everyone who consumes it, including internal product teams, AI agents, and customers directly accessing their own data. This Senior Backend Engineer role builds and owns that boundary: APIs and the...

Quintall is seeking a Senior Backend Developer to join its IT Digital Marketing team in Barcelona. You will design, build, and continually improve backend services and APIs that support digital marketing and sales capabilities. As a senior member of an international Agile team, you will own backend solutions, contribute to architecture and standards, and...

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...

WayOps busca un Senior Backend IA Scraper para liderar extracción y procesamiento de datos a gran escala. Participarás en el diseño y desarrollo de soluciones que combinen scraping, backend y bases de datos, exponiéndolos a través de APIs y herramientas internas. Se valorará experiencia en IA aplicada a datos, pipelines de datos y entornos...

NeuralTrust in Barcelona, Spain, is seeking a Senior Software Engineer to scale our platform and advance AI security technologies. You will contribute to backend systems using Go and Python, own end-to-end initiatives from design to deployment, and collaborate with a talented, multi-skilled team. The role emphasizes building robust, secure, and measurable...

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...

Factorial is seeking a Senior Software Engineer to join our Data Ops team. You will own the backend architecture of internal sales, invoicing, and billing applications, building resilient, scalable APIs and cloud workflows that power finance and customer experiences. You’ll collaborate with design and product, integrate payment platforms like Stripe or...