Worked on the root-project/root repository to deliver observability tooling for ntuples, focusing on performance profiling and schema visualization. Developed a Speedscope-compatible ntuple schema profile and implemented the PrintSchemaProfile method within RNTupleInspector, allowing users to visualize field sizes and structure for performance analysis. The approach included writing comprehensive unit tests in C++ to ensure the accuracy of profiling outputs. By enabling detailed inspection of ntuple-heavy workflows, this work improved the ability to identify performance bottlenecks and supported data-driven optimization. The technical stack centered on C++ development, performance profiling techniques, and robust unit testing to enhance debugging and workflow efficiency.