Remi Arquevaux developed parameterized initialization tests for automatic gas fee configuration in the TransactionController of the MetaMask/metamask-extension repository. Focusing on backend development and leveraging both JavaScript and TypeScript, Remi ensured that transaction-type gating logic was thoroughly validated, with updates correctly disabled for swap, swapApproval, bridge, and bridgeApproval transactions, while remaining enabled for contractInteraction types. The work emphasized robust test coverage and traceability, supporting future changes to gas fee configuration. By enhancing the reliability of initialization logic through targeted testing, Remi contributed to maintainable and predictable transaction processing, demonstrating depth in testing strategy and backend implementation within a complex codebase.