[Hiring] Senior Software Engineer @Knowledge Lab AG

Role Description

You will join a strategic and technically challenging modernization journey, working on the migration of a large-scale enterprise application from Java EE to Spring Boot 3 and from JSP/JSF to Angular. This is a unique opportunity to apply your deep Java expertise and your knowledge of both legacy enterprise architectures and modern cloud-native paradigms, playing a central role in shaping the future of a critical business platform.

Your Tasks:

• Contribute to the migration from Java EE 8 to Spring Boot 3, ensuring architectural integrity and code quality throughout the process
• Rewrite from JSP/JSF to Angular 18+, working in close collaboration with frontend specialists
• Design and implement cloud-native Java applications following modern best practices
• Troubleshoot and resolve issues across the full stack, keeping the system stable, secure, and performant

Qualifications

• A bachelor's or master's degree in computer science, or equivalent hands-on experience in software engineering
• At least 6 years of professional experience in Java development
• Understanding of Java EE 8 concepts, including application servers (JBoss EAP 8.0), JSP, and JSF
• Strong, production-level proficiency in Spring Boot 3 and Java 17 or higher
• Experience with Angular 18+
• Understanding of cloud-native application principles in the Java ecosystem (12-factor apps, containerization, observability)
• Basic understanding of Kubernetes, Helm and GitOps Practice
• Familiarity with Jenkins and GitHub
• Experience using Jira
• Fluent English is essential; German language skills are an advantage

Benefits

• Permanent full-time contract
• Flexible working models within Serbia
• Long-term career development in international projects
• A professional and collaborative environment

Interested?

If you want to be part of the K-Lab story, apply now or just contact Julia:

Julia Büscher
People & Talent Manager
[email protected]
+41 44 244 40 27

We do not accept unsolicited CVs from recruitment agencies.