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Designs, develops and maintains Java Spring Boot microservices with REST APIs, deployed on OpenShift with Cassandra, at a multinational banking consulting firm. Collaborates with React frontend teams, takes part in code reviews and CI/CD, and drives performance, scalability and security improvements.
Java Backend Developer at Deutsche Telekom in Granada, Spain, building and maintaining backend applications that support public administration systems. Day-to-day work involves feature design, bug fixes, Git/GitFlow, agile ceremonies, and collaboration with frontend, architecture, QA, and DevOps teams.
Java backend developer at T-Systems Iberia (Deutsche Telekom group) building and maintaining critical public-administration applications in the TAO department. Day to day: Java feature development, Git/GitFlow, agile ceremonies, incident resolution, and collaboration with frontend, QA and DevOps, with AI-assisted development tools. Hybrid work from several Spanish offices.
Design and operate Java backend services as microservices using Spring Boot, implementing REST APIs and running workloads on OpenShift while collaborating with React frontend teams. Requires experience with Cassandra, Docker, Git and agile practices (Scrum/Kanban).
Mid/senior backend developer building and maintaining Java Spring Boot microservices and RESTful APIs, with additional Python work, for an energy-sector client. Day to day involves integrating relational (PostgreSQL, MySQL) and NoSQL (MongoDB, Redis) databases, writing tests, and collaborating with frontend, DevOps, and product teams. Position is 100% remote, based in Barcelona.
Fully remote Java developer (min. 3 years' experience) building microservices with Spring Boot at Slashmobility, a Barcelona-based boutique tech consultancy that designs and builds digital products and platforms for large corporations.
Designs and maintains Java backend services as Spring Boot microservices backed by Cassandra, exposing REST APIs and deploying on OpenShift. Day to day includes CI/CD participation, performance improvements, and integration with frontend teams; permanent contract in Spain with telework options.
UST España & Latam is hiring a Java developer to evolve its IT Services Marketplace and Microsoft 365 platforms, building backend services and REST APIs and integrating with Microsoft and internal systems in an agile team. The role is 100% remote from Spain.
Senior backend Java developer at EY GDS in Málaga, designing and building enterprise-grade banking applications (payments, lending, core banking, risk, regulatory reporting) using Java 11/17+, Spring Boot, Oracle DB and microservices in an agile, hybrid team serving financial institution clients.
Arktic es una expedición. Una aventura construida por un grupo de profesionales que cree en el oficio de consultor, una exploración constante del negocio, la tecnología y la transformación de organizaciones. Nuestro…
100% remote Java Full Stack developer role (Spain) working on a financial-sector trading controls project: designing, developing and optimizing Java/Spring Boot applications, reducing technical debt, and using AI tools like GitHub Copilot and Devin, plus CI/CD, DevOps and security/quality tooling such as SonarQube and Fortify.
Java Backend Developer at international consulting firm Qaracter, building and maintaining backend applications and microservices for banking and financial projects. Day-to-day work centers on Java 8/11, Spring Boot/Batch/Cloud Stream, Kafka event-driven architecture, Oracle/PostgreSQL/Redis, and CI/CD with Jenkins and OpenShift.
Act Digital is hiring a Senior Fullstack Java Developer for a 100% remote position, working on both frontend and backend of high-impact enterprise applications. Core technologies include Java, Spring Boot microservices, JSF, Jakarta EE, and REST API design.
Mid-senior/senior backend Java developer joining a project for a major Spanish airline, hybrid from Madrid with just one office day per week. Day-to-day work centers on Java/Spring Boot backend development with real testing practices (JUnit/Mockito), CI/CD pipelines, and hands-on cloud experience (AWS, Azure, or GCP).
Senior backend engineer at NTT DATA working on large tech-modernization programs that integrate generative-AI and agentic capabilities into complex client environments. Day to day you build Java/Spring Boot (or Node.js) microservices with strong testing practices, deploy on Docker/Kubernetes/OpenShift, and use DevOps tooling like Ansible and Terraform; telework options are available.
Senior Java Developer building and optimizing high-performance backend services for a sports betting and gaming platform: integrating a new feed supplier and developing a cashier module for cash-flow management. Core stack is Java, Spring, and REST APIs, with Docker, Maven/Gradle, and Git in an Agile SAFe environment, remote from Spain.
UST is hiring a mid-level Java developer in Madrid (hybrid 3x2) to design, build, and maintain enterprise applications, including their own testing since there is no dedicated QA team. Core stack: Java, Eclipse IDE, Oracle DB/SQL, RESTful integrations, Git, and Kafka (or MQ alternatives), with training provided on the Actico rules platform and C1 English required.
NTT DATA is hiring a Senior Java Developer for finance-sector projects in Foz, Spain, working on integrating generative AI and agentic platforms into complex backend systems. Day-to-day work centers on Java/Spring Boot microservices, strong testing practices, and DevOps tooling like Docker, Kubernetes, Ansible, and Terraform.
Senior Java developer at SII Group Spain working in a hybrid, international team on progressively migrating applications from Java 8 to Java 25 and Tomcat 8 to 10, including the move to Jakarta EE. Core stack: Java 8/17/21/25, Maven, Gradle, Spring Boot, multi-module monorepos and CI/CD.
Senior backend developer building, integrating and maintaining internal applications: Java/Kotlin services with Spring Boot, Kafka messaging/streaming, and Oracle/MongoDB data layers. Fully remote role based in Madrid, requiring 7+ years of Java backend experience and solid microservices and Git/testing practices.
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