Worked on a codebase-wide refactor in the facebook/fbthrift repository to standardize naming conventions and improve maintainability. Focused on backend development and code refactoring using Hack, the developer converted all instances of 'Causes::the' to 'causes_the' throughout the project. This change addressed inconsistencies in internal identifiers, making the codebase more readable and easier to navigate for future contributors. By aligning with established project conventions, the refactor reduced onboarding friction and simplified future code reviews. The work was delivered as a focused feature update, emphasizing clarity and uniformity in code structure without introducing new bugs or altering existing functionality.