Yousef Matar focused on optimizing CI/CD performance for the hawk-ai-aml/github-actions repository by tuning Node.js memory allocation for Yarn builds. He adjusted the max_old_space_size parameter, initially increasing it to 6144MB and then reducing it to 4096MB to balance build stability with resource efficiency. This work, implemented through two targeted commits, improved CI reliability and reduced flaky builds, resulting in faster feedback cycles and more predictable resource usage. Yousef utilized YAML for configuration and leveraged skills in build automation and GitHub Actions, providing clear documentation and rationale to support future maintenance and auditability of the CI pipeline.