Worked on maintaining and securing core infrastructure across the bpftrace and sched-ext/scx repositories, focusing on compatibility and risk reduction. Addressed kernel changes in bpftrace by updating the run queue length analysis script, adapting its logic in BPF and Shell to reflect the renaming of a key struct field, and ensuring legacy support through CI/CD configuration. In sched-ext/scx, delivered a targeted security patch by upgrading the Rust slab dependency to remediate a known vulnerability, carefully updating Cargo.lock to preserve build reproducibility. Demonstrated a methodical approach to dependency management, kernel development, and scripting, prioritizing stability and auditability over new feature delivery.