Описание: Groupe SII is a French multinational that provides IT services and solutions worldwide, operating in 21 countries with more than 16,000 professionals. SII Group Spain delivers digital, IT, and engineering services and solutions across various industries, combining software development expertise with manufacturing, systems, mechanical, electrical, and embedded systems engineering capabilities.

Задачи:

- Participate in the progressive migration of applications from Java 8 to Java 25;
- Develop, fix, and refactor code to ensure compatibility with new JVM versions;
- Identify and resolve incompatibilities caused by the evolution of the Java language and platform;
- Ensure temporary coexistence between Java 8 components and newer versions;
- Design and maintain the monorepository build architecture using Maven and Gradle;
- Manage cross-cutting dependencies, compilation scopes, and build process and pipeline optimization;
- Technically lead the migration from Tomcat 8 to Tomcat 9 and Tomcat 10;
- Collaborate with Platform teams to align infrastructure and runtime environments;




- Support the transition to Jakarta EE and resolve related incompatibilities;
- Define the validation and regression prevention strategy with QA;
- Participate in test automation and incident resolution during testing campaigns.

Требования:

- Extensive experience as a Java developer and in technology migration projects;
- Advanced proficiency in Java 8, 17, 21, and 25;
- Solid experience with Maven, Gradle, and Spring Boot;
- Excellent knowledge of JVM internals and version compatibility issues;
- Experience with multi-module architectures and complex monorepositories;
- Extensive experience with Tomcat, especially migrations between versions 8, 9, and 10;
- Experience working in CI/CD environments;
- Analytical skills, autonomy, and the ability to coordinate across technical teams.

Условия:

Geographic mobility and participation in large-scale international projects are available.

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📌 java разработчик in IT services (Barcelona)
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