Empleos de senior backend engineer java en Madrid

Kraken is seeking a Senior Software Engineer to lead the Consumer team, owning the architecture of Rust backend services powering trading, payments, and crypto experiences. You will drive end-to-end ownership, mentor engineers, and collaborate with product leadership to shape roadmaps.A strong emphasis on AI-assisted development and high-quality user...

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...

HireHi in Barcelona is seeking an experienced backend engineer to own end-to-end delivery of product features, from requirements through production, ensuring quality and customer value.You will collaborate with product and technical teams to manage dependencies, mentor junior engineers, and contribute to architecture while raising engineering standards. The...

Trading 212 is seeking Senior Backend Engineers to own backend services end to end across a microservices platform. You will design, build, test, deploy and operate production systems, collaborating with product and engineering teams to turn complex requirements into durable solutions.You’ll work with Java, Go, Node.Js and databases, focus on performance,...

SCI ServiClients in Barcelona is seeking a senior QA automation engineer to design, build and own automated test coverage for a cloud-based learning platform. You will focus on backend services, API testing and contract validation.The role involves OpenAPI, OAuth2 interactions, CI/CD in GitHub Actions, and running tests in containerised environments with...

T-Systems Iberia sucht einen Senior Backend Engineer, der zentrale Plattform-Services, API-Design und robuste Microservices für skalierbare KI-Infrastruktur entwickelt. Sie arbeiten eng mit ML-Infrastrukturteams zusammen und verantworten Sicherheit, Observability und CI/CD.Sie verfügen über umfangreiche Python-/API-Entwicklung, verteilte Systeme,...

Timup, consultora de selección, busca un/a Senior Backend Developer para evolucionar y modernizar una plataforma tecnológica en un entorno con microservicios en producción. Trabajarás con Symfony, Laravel y Node.Js, migrando legacy de Laravel y consolidando servicios para una arquitectura óptima.Se requiere experiencia sólida en PHP 8.2+,...

CrowdFarming está buscando un Senior AI & Backend Engineer para trabajar en una plataforma tecnológica distribuida en producción, con foco en IA, agentes y automatización. Se requieren sólidos conocimientos en Node.Js/TypeScript, NestJS y AWS, y experiencia en sistemas observables y pruebas modernas.El rol implica diseñar e implementar soluciones...

Swiss Re is seeking a senior software engineer for its IT Resilience unit in Spain. You will design and build reliable backend services, APIs, and automations while working across languages and platforms. The role emphasizes engineering resilience, data integration, and hands-on mentoring to raise team standards. You will contribute to AI agent capabilities,...

InvestEngine is hiring a Senior Backend Engineer for the Payments Team. You will design, implement and evolve backend services in Python 3.11 using Django/DRF, focusing on payment flows, integrations and system reliability. You’ll work with MySQL, Redis and modern tooling while shaping architecture and driving performance improvements. You’ll collaborate...

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 Swiss Re...

Buscamos un **Senior AI & Backend Engineer & Front** **Requisitos Técnicos** Experiencia real y reciente construyendo o aplicando en producción sistemas de agentes/subagentes IA: orquestación de tareas, definición de skills, gestión de contexto, tool use/function calling. Dado que la disciplina es muy reciente, valoramos proyectos concretos y...

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...

Una empresa de tecnología en Sant Cugat del Vallès busca un/a Senior Java con amplia experiencia en Microservicios y TDD. Las responsabilidades incluyen analizar y programar código, realizar revisiones, y dar soporte a otros desarrolladores. Se requiere buen nivel de inglés conversación y experiencia con tecnologías como Java 8+, Spring Boot, y Kafka....

Talan Group is seeking an AI-native engineer to leverage modern AI tools in the Software Development Life Cycle from analysis to deployment. Applicants should have at least 5 years of backend development experience and strong skills in Java, Spring Boot, and Camunda.The position is remote, offers a long-term freelance contract, and allows interaction within...

Emburse Barcelona team is seeking a senior software engineer to help advance our enterprise expense and invoicing platform. You will contribute to Java development, design REST APIs, and work within a hybrid model to deliver scalable microservices.You’ll collaborate with product, analytics, and UX teams, mentor peers, and help drive secure, high-quality...

Tamarind Intelligence busca un/a Senior Java Developer para liderar el desarrollo backend en una arquitectura de microservicios. Trabajarás con Java, Spring Boot y Apache Kafka para diseñar, desarrollar y evolucionar aplicaciones críticas.Integrarás un equipo ágil (Scrum), practicarás TDD/BDD y manejarás bases de datos PostgreSQL, Oracle y MongoDB. Se...

Exdesis busca un Desarrollador Full-Stack Senior para trabajar de forma remota, con base en Madrid. Serás clave en el diseño, desarrollo y mantenimiento de aplicaciones web de alta calidad, abarcando backend y frontend, y orientarás a otros desarrolladores para soluciones escalables.Se valoran más de 5 años de experiencia y dominio de stacks modernos,...

Elastic is seeking a highly capable engineer to contribute to core Elasticsearch infrastructure in Madrid, Spain. You will design scalable features, tackle performance and concurrency challenges, and enhance observability across cloud systems. Ideal candidates will have deep Java experience, Go knowledge, and a track record of leading large-scale projects,...

Krell Consulting & Training, S.L. busca un/a Senior Fullstack Developer con sólida experiencia en Java, Spring Boot y tecnologías frontend para un proyecto tecnológico con IA. La posición es híbrida en Barcelona, con aproximadamente un día presencial por semana.Se valoran experiencia en APIs REST, entornos Cloud y herramientas de IA de desarrollo, así...