Yaman Ziadeh contributed to the apache/cassandra repository by developing and integrating async-profiler support, enabling production-ready performance profiling directly through nodetool commands. This feature allows users to start, stop, and manage profiling sessions on live Cassandra clusters, improving observability and facilitating targeted performance diagnostics. The implementation, written in Java and focused on system monitoring and performance profiling, addressed the requirements of CASSANDRA-20854 and involved collaboration with other contributors and reviewers. Ziadeh’s work provided a robust mechanism for data-driven performance tuning and faster troubleshooting, demonstrating a solid understanding of distributed systems and practical application of profiling tools in production environments.