Marko Kosmerl worked on the dfinity/new-motoko-base repository, focusing on governance improvements rather than direct code changes. He updated the CODEOWNERS file in plaintext to reassign ownership of language contributions, clarifying accountability and aligning repository management with evolving team priorities. This adjustment streamlined team management processes, enabling faster code reviews and smoother onboarding for new contributors. By concentrating on repository governance, Marko enhanced maintainability and auditability without altering the codebase itself. The work demonstrated a methodical approach to project scaling and collaboration, addressing organizational needs through targeted repository management and process refinement rather than feature development or bug fixes.