Worked on the oxsecurity/megalinter repository to implement the migration to ESLint v10’s flat configuration model, replacing legacy .eslintrc.* files with the new eslint.config.js format. This involved updating documentation, test fixtures, Dockerfiles, and schema variables to align with the new configuration approach, using JavaScript and JSON for implementation. Enforced a hard migration gate to ensure teams adopted the updated configuration before continuing linter execution, providing clear migration guidance in logs. Conducted end-to-end validation to confirm stability and compatibility across various workspace setups, ultimately improving CI reliability and reducing maintenance overhead through streamlined configuration management and Docker integration.