Worked on Redocly/redocly-cli and Redocly/website, focusing on developer experience, reliability, and security. Improved test stability and module resolution by refactoring Vitest mocks and standardizing imports using TypeScript and JavaScript. Enhanced CLI usability by modernizing logging, routing messages to stderr, and unifying output formats for consistent programmatic consumption. Centralized error handling introduced a uniform error format and streamlined flow control. Updated documentation and developer guidelines to support maintainability. On Redocly/website, addressed a critical security vulnerability by patching protobufjs dependencies, validating stability post-update. Demonstrated strengths in CLI development, code refactoring, dependency management, and security patching across monorepo and web projects.