Over a two-month period, contributed to the ZcashFoundation/zebra repository by delivering three targeted CI/CD features focused on workflow reliability and contributor experience. Enhanced GitHub Actions workflows using YAML to ensure checkout steps functioned seamlessly across both public and private forks, implementing granular permissions and fail-closed safeguards to minimize unnecessary access. Introduced Mergify-based gating to enforce PR merge readiness, aligning queue behavior with GitHub Rulesets for predictable merges. Optimized CI pipelines to skip integration tests for forked pull requests, reducing false negatives and streamlining external contributions. Demonstrated expertise in DevOps, CI/CD automation, and secure workflow configuration without introducing new bugs.