Vasiliki contributed to the cloudflare-docs and cloudflare/workerd repositories, focusing on documentation and internal module management. She authored the Cloudflare Workers Release Notes for version 13.5, updating workers.yaml and ensuring the documentation accurately reflected the v8 to v13.5 upgrade, which improved clarity for developers and streamlined the release workflow. In cloudflare/workerd, she reverted experimental Node.js process API compatibility changes, removing unstable flags and internal modules to restore stable behavior and reduce deployment risk. Her work involved C++, TypeScript, and yaml, demonstrating careful version control, risk mitigation, and a commitment to maintaining reliable, well-documented systems for ongoing development.