Ismael developed native macOS CA certificates support for curl within the Homebrew/homebrew-core repository, focusing on improving SSL certificate verification during package installations. By integrating the Apple SecTrust mechanism and aligning curl to use macOS system CAs, Ismael addressed compatibility issues and reduced SSL-related errors for Homebrew users. The work involved configuring build tooling to include the --with-apple-sectrust option, demonstrating a strong understanding of macOS development, package management, and security enhancements. Using Ruby as the primary language, Ismael delivered a targeted feature that deepened platform integration and improved the reliability of curl-based downloads on macOS systems.