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System Configuration, Enterprise Applications, Integration, development support, Data Analysis, consumer billing, China vendor BSS products, Batch Processing, high-volume batch processing, telecom billing systems, enterprise application ecosystems, billing cycles, solution design and architecture, billing and charging processes, system integration patterns, Troubleshooting, API-based architectures, rating and charging

Support, System Configuration, Enterprise Applications, Solution Design, Integration, Data Analysis, consumer billing, Development, China vendor BSS products, Batch Processing, telecom billing systems, high-volume batch processing, enterprise application ecosystems, billing cycles, billing and charging processes, system integration patterns, architecture, Troubleshooting, API-based architectures, rating and charging

Server Technologies, Core Java, Design Patterns, Java 8, IO NIO, Java multi-threading, network communication, high concurrency, high availability systems