Empleos de senior backend engineer java en Barcelona

THEWHITEAM Consulting is seeking a Senior Backend Engineer to drive backend development across a modern stack. You will design scalable services in Java, build microservice architectures, and apply Hexagonal Architecture with Ports & Adapters. Expect hands-on work with Kafka/RabbitMQ, Docker, Grafana, and cloud or containerized environments, while advancing...

Voodoo is seeking a senior backend engineer to design and build the server-side foundation for Castle Busters, moving from client-authoritative to server-validated gameplay. You will define APIs and player-state management, working with client engineers and game designers to deliver scalable, secure gameplay systems. You will own server-side validation for...

The RoleWe are looking for a Backend Engineer to join a small, high-ownership engineering team working on new product initiatives. You will be primarily focused on new product initiatives, building new services and features, though you may occasionally need to navigate existing codebases. You use AI coding tools as a core part of how you work, and you are...

Backend Java Engineer (Global Fashion Retail)Referencia: #52724Localización: Barcelona Buscas un reto donde tu código impacte a millones de usuarios en todo el mundo? Únete al equipo de ingeniería de uno de los grupos multinacionales más influyentes del sector moda. Estamos transformando nuestra infraestructura para soportar un ecosistema digital de...

Talan Spain is seeking a skilled backend Java developer to design, build, and maintain robust backend services using Java, Spring Boot and microservices, in a 100% remote setup.You will implement and consume REST APIs, deploy on OpenShift, and collaborate with Angular front-end teams to ensure seamless integration. The role involves code reviews, CI,...

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...

Qonto is seeking a Backend Engineer to build the financial infrastructure that 600,000+ European SMEs depend on daily, from scalable APIs to real-time banking services.You will design, deploy, and maintain services, co-own architecture, and mentor engineers while embracing ownership and continuous improvement. Based in Barcelona, Spain, with the Qonto way of...

Lever, Inc. is seeking a Senior Backend Engineer for Payments & Fintech in Spain. You will rebuild and scale the financial systems at the core of a growing global platform, owning architecture for billing, subscriptions, and entitlements. You will lead migrations from legacy systems while ensuring correctness, reliability, and auditable financial records....

Jobgether SRL, listed on behalf of a partner company, seeks a Senior Software Engineer (Node.js/Python) based in Spain to build backend and AI-enabled systems powering an innovative mobility platform. You will design, develop, and operate scalable web services and APIs using Node.js, TypeScript, and Python, owning architecture and working with AI engineers...

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...

HCL Technologies Limited is seeking a Backend Developer to strengthen our Spain-based team. You will design and implement backend services, compose APIs, and contribute to CI/CD using Azure DevOps. Proficiency in Maven, JPA/JDBC, and databases is expected, with knowledge of OpenShift and scalable architectures. You should be comfortable with distributed...

España - remoto10+ años de experienciaNivel de inglés: AvanzadoSólida experiencia práctica con Java, Spring Boot y Angular/TypeScript.Ingeniería de datos de principio a fin, incluyendo la ingesta, transformación y validación de datos, bases de datos relacionales, procesamiento analítico e, idealmente, datos geoespaciales.Integración de API REST,...

Smadex is seeking a Software Engineer to join its core engineering team in Barcelona. You will tackle features for the real-time bidding Open-RTB system, contribute to code reviews, and help evolve the platform. The role emphasizes ownership, collaboration, and growth in a fast-paced, international environment, with hybrid work, competitive compensation, and...

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...

Role Description We are looking for a Senior Backend Developer to join our IT Digital Marketing team within the Digital Sales Hub in Barcelona.In this role, you will design, build, and continuously improve backend services, APIs, databases, and integrations that support our digital marketing and sales capabilities.You will develop scalable, secure, and...

DXC Technology busca un profesional senior para administrar infraestructuras y apoyar el desarrollo de aplicaciones backend en entornos corporativos de producción. Colaborarás con desarrollo, infraestructura y operaciones para garantizar estabilidad, disponibilidad y seguridad, implementando prácticas de DevOps y despliegues multiplataforma.Participarás...

Cognizant is seeking a Sr Quality Engineer in a hybrid work model to design robust test strategies and automation frameworks using Java and Karate, ensuring reliable enterprise applications in the travel industry. Desplácese hacia abajo para encontrar una descripción detallada de este trabajo y lo que se espera de los candidatos. Envíe su solicitud...

With more than 100,000 sensors deployed worldwide, Urbiotica is a leading player in the smart parking industry and a pioneer in the fast-growing Internet of Things sector. Through our end-to-end Smart City solutions, we actively contribute to the transformation of urban areas, helping build a more digital and sustainable environment for citizens. We're now...

ERNI is seeking a senior Java backend developer to build scalable enterprise applications and AI-enabled solutions for the pharmaceutical sector. You will leverage Java, Spring Boot, React, Next.Js and MUI to deliver secure, reliable products while collaborating with multidisciplinary teams.You will join a hybrid team with a strong culture of mentorship, 1:1...

Product Pulse is seeking a backend-focused engineer to own a core, isolated .NET system in production. You will maintain and extend a legacy codebase built on .NET Framework 4.8 while improving reliability, performance and tooling.You will collaborate with other engineering teams, diagnose complex production issues and make pragmatic decisions balancing risk...