Developed and delivered the WhatsApp OTP Verification Connector for the logto-io/logto repository, enabling secure multi-channel user verification through the Meta Cloud API. The work involved full stack development using JavaScript and TypeScript, with a focus on seamless API integration and robust unit testing. End-to-end changes included implementing the connector, verifying core authentication flows, and preparing detailed configuration instructions to support streamlined deployment. By expanding verification options, the connector reduces onboarding friction and enhances security for end users. The release was supported by comprehensive test coverage and a dedicated changeset, reflecting a methodical approach to feature delivery and maintainability.