Mahesh Kukreja focused on security hardening for Docker builds across core Worldcoin repositories, including worldcoin/world-chain and worldcoin/iris-mpc. He updated multiple .dockerignore files to systematically exclude sensitive files such as .git and .gitignore, preventing leakage of repository metadata and source control information into Docker images. Working primarily with Dockerfile syntax and DevOps practices, Mahesh ensured cross-repository consistency while maintaining CI/CD efficiency. His work addressed both new features and bug fixes, improving build hygiene and reducing the risk of sensitive data exposure. The depth of his contributions reflects a strong understanding of Docker security and practical build process improvements.