Senior Java Middleware Engineer / Apache ServiceMix Specialist

About the role

Scalian, a multinational engineering consulting firm with over 35 years of experience, is looking for an experienced Senior Java Middleware Engineer / Apache ServiceMix Specialist. The role supports the analysis, optimization and modernization of a critical middleware platform, improving performance, diagnosing complex issues and giving technical recommendations on reliability, scalability and maintainability.

Key responsibilities

• Analyze and optimize the existing Apache ServiceMix platform, reviewing and enhancing Apache Karaf, Apache ActiveMQ and middleware configurations.
• Monitor, analyze and improve JVM performance, including memory management, garbage collection and runtime optimization.
• Identify and resolve memory leaks, performance bottlenecks and system inefficiencies, and carry out root-cause analyses.
• Evaluate platform vulnerabilities, technology obsolescence and risks, and define recommendations to improve stability and performance.
• Collaborate with development and infrastructure teams to optimize middleware architecture.
• Review CI/CD and build processes using GitLab and related environments.
• Produce technical documentation, assessment reports and performance improvement roadmaps.

Required profile

• Bachelor's or Master's degree in Computer Science, Software Engineering or a related field.
• 7+ years of experience in Java development and middleware technologies.
• Proven experience optimizing and troubleshooting enterprise applications.
• Strong analytical, communication and reporting skills.

Required skills

• Hands-on Java development; Apache ServiceMix, Apache Karaf and Apache ActiveMQ.
• JVM tuning, GC analysis, memory profiling, thread analysis and performance monitoring.
• Middleware architecture, integration patterns and messaging systems; vulnerability assessment and technology lifecycle management.
• Familiarity with GitLab, source control, build pipelines and deployment; preferred tools include JProfiler, Prometheus, Grafana, ELK, Maven, Jenkins, Linux and shell scripting.