Aaron Brewbaker focused on enhancing continuous integration performance and reliability for the cosmos/evm repository by upgrading GitHub Actions runners to larger depo-ubuntu-22.04-4 environments. Using YAML to configure CI/CD workflows, Aaron improved parallelism and throughput for unit, script, and fuzz test suites, directly addressing test flakiness and instability. The technical approach centered on standardizing runner environments, which accelerated test execution and shortened feedback cycles for pull requests and releases. Aaron also documented configuration changes and their impact on test timings, laying groundwork for future optimization. The work demonstrated depth in CI/CD pipeline management and workflow automation using GitHub Actions.