Tanner focused on infrastructure improvements across Automattic’s open source projects, delivering targeted enhancements to build systems and CI/CD pipelines. In Automattic/wordpress-rs, Tanner upgraded the CI environment to Xcode 16.3, ensuring builds leveraged the latest Apple tooling and improving reliability for ongoing development. He documented upgrade procedures and introduced guardrails to streamline future updates. Later, in Automattic/studio, Tanner updated the Windows SDK version to 19041, aligning the development environment with current standards and reducing onboarding friction. His work, primarily using Shell scripting and CI/CD automation, addressed compatibility and maintainability, reflecting a methodical approach to platform support and developer experience.