Java Software Engineer at Rapinno Tech Solutions GmbH

Job Title:Sr Java Developer

Type of Hiring:Permanent

Work Mode:No Hybrid – 5 Days at onsite at Customer location.

Work Location:Luxembourg

Language:English and French are mandatory

Summary:

We are seeking a highly skilledSoftware Engineerwith expertise inJava-based development, secure coding practices, and modern DevOps tools. The role requires hands-on development, integration with CI/CD pipelines, and strong knowledge in security frameworks.

Experience

• Minimum 10yearsof professional experience inJava-based developmentwith proven exposure ofsecure coding, enterprise applications, and modern DevOps practices.

Missions of the Role

• Development of software solutions (Java, Spring Boot, Angular, etc.)
• Source code management and version control
• Integration with automated delivery pipelines (Jenkins, Maven, Git)
• Translate business needs into technical specifications
• Design and development of unit, module, and integration tests
• Troubleshooting and analysis of software issues, third-party libraries, and applications
• Maintenance of software through its life cycle
• Documentation of code, processes, and manuals
• Task reporting to the Project Manager
• Level 3 Helpdesk support, problem management
• Application performance tuning and optimization
• Contribution to architecture, design reviews, and change management processes
• Adherence to secure coding standards (OWASP, GDPR, SSL, HSM)
• Code reviews, vulnerability patching, and penetration test support

Role Responsibilities

• Prevent and reduce technical debt
• Contribute to enhancements of CI/CD pipelines
• Software architecture design, including relational database modeling and fine-tuning (Oracle DB, SQL)
• Collaborate with senior engineers on service dependencies
• Present technical proposals in Architecture forums
• Draft and review technical chapters of project charters
• Mentor and coach junior engineers
• Act as a technical reference for the Service Manager

Required Skills

• Languages: Mandatory French & English (fluent). Any other language is an asset

Technical Competencies:

• Java, Spring Boot, Hibernate
• SQL, Oracle DB
• Angular, JSP, Javascript
• Jenkins, Maven, Git, Jira, Agile
• Docker (containerization)
• Secure coding practices (OWASP, GDPR, SSL, HSM, code review, pen testing, vulnerability patching)