Andy LeClair focused on documentation-driven development for the elixir-lang/expert repository, leading a comprehensive rebranding effort to transition all references from Lexical to Expert. Over the course of one month, Andy updated installation instructions and related documentation using Markdown, ensuring terminology consistency and reducing user confusion during the migration. The work emphasized auditability, with commit-based traceability supporting future documentation reviews. No code changes were required, as the primary deliverable centered on aligning branding and onboarding materials. Andy’s approach leveraged strong documentation skills to deliver a seamless user experience and maintain marketing consistency, demonstrating depth in technical writing and process alignment.