SII Group Spain
Java Developer
Java developer at SII Group Spain in Barcelona who leads large-scale platform migrations: upgrading applications from Java 8 to Java 25, moving Tomcat 8 to Tomcat 9/10 and Jakarta EE, and maintaining Maven/Gradle monorepo builds, CI/CD pipelines, and regression testing with QA.
- Compensation
- Not disclosed
- Location
- Barcelona, Spain
- Work setup
- Not specified
- Seniority
- Not specified
- Employment
- Contract
- Experience
- Not specified
- Category
- Software engineering
- Posted
Skills
Must have
- Extensive experience as a Java developer and on technology migration projects
- Advanced knowledge of Java 8, 17, 21, and 25
- Strong experience with Maven, Gradle, and Spring Boot
- Excellent understanding of JVM internals and compatibility issues between versions
- 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 ability to coordinate across technical teams
Full description
Описание:
SII Group Spain provides digital, IT, and engineering services and solutions to industries across the world. It combines IT and software development expertise with manufacturing, systems, mechanical and electrical engineering, and embedded systems capabilities to support digital transformation and innovation.
Задачи:
- Participate in the gradual migration of applications from Java 8 to Java 25
- Develop, fix, and refactor code to ensure compatibility with newer JVM versions
- Identify and resolve incompatibilities caused by changes to 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 and compilation scopes, and optimize build processes and pipelines
- Lead the technical 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 testing strategy with QA
- Participate in test automation and resolve issues during testing campaigns
Требования:
- Extensive experience as a Java developer and on technology migration projects
- Advanced knowledge of Java 8, 17, 21, and 25
- Strong experience with Maven, Gradle, and Spring Boot
- Excellent understanding of JVM internals and compatibility issues between versions
- 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 ability to coordinate across technical teams
Условия:
Indefinite-term contract Geographic mobility opportunities and participation in large-scale international projects