Job Summary: You will join a strategic, long-term project at a leading company, working on backend development of scalable solutions using modern technologies and agile methodologies. Key Highlights: 1. Strategic, long-term project at an international market-leading company 2. Backend development with microservices, Spring Boot, Kubernetes, and Cloud 3. Active role in the software lifecycle, including API-First design and Clean Code DESCRIPTION You will join a **strategic, long-term project** within an internationally recognized industry leader known for its technological capabilities and participation in high-impact initiatives in complex and mission-critical environments. You will be part of a highly skilled team developing solutions based on a **microservices architecture**, leveraging modern, in-demand market technologies such as **Spring Boot, Kubernetes, and cloud environments**. The project focuses on building robust, scalable, and resilient systems where backend development plays a pivotal role in the platform’s evolution. You will take an active role across the entire software lifecycle: from **API design using an API-First approach**, implementation of business logic, to integration between services via synchronous and asynchronous communication—all within an environment committed to best practices, **Clean Code**, software quality, and continuous improvement. This is an excellent opportunity for professionals seeking continued growth in cutting-edge technologies, working in a technically demanding environment with multidisciplinary teams and agile methodologies. The project offers stability, continuity, and clear professional progression, enabling you to consolidate your expertise in **distributed architectures, containerization, and cloud computing**. Work modality is **predominantly remote**, with occasional onsite interaction possible in Madrid, facilitating a genuine balance between flexibility and direct collaboration with the team. In short, this is an opportunity to make a qualitative leap in your career by participating in top-tier projects within a reference organization in engineering and technology. REQUIREMENTS **Essential Technical Requirements** * Minimum **4 years’ experience** in software development with **Java**. * Solid experience in developing **microservices with Spring Boot**. * Advanced knowledge of **JPA, Hibernate, and Spring Data**. * Experience in **designing and developing REST APIs**. * Familiarity with the **API-First approach**, and use of **OpenAPI / Swagger**. * Experience integrating microservices: * **Synchronous communication** (REST, Feign) * **Asynchronous communication** (JMS or other messaging mechanisms) * Proficiency with **relational databases** (Oracle and/or PostgreSQL). **Desirable Technical Requirements** * Experience with **Docker and Kubernetes** (application deployment). * Knowledge of **CI/CD** (Jenkins or other tools). * Experience with **version control (Git)**. * Knowledge of **testing** (JUnit, Mockito, unit and integration tests). * Familiarity with **Unix/Linux systems**. * Experience or knowledge of **cloud environments (AWS, Azure, or GCP)**. * Understanding of **design patterns and best practices (Clean Code)**. **Non-Technical Requirements** * Advanced **English** proficiency. * Advanced **Spanish** proficiency. * **100% remote work. Residence in Madrid or willingness to attend the office occasionally is valued.** * Teamwork capability, commitment to software quality, and adherence to development best practices.