During June 2025, Andres Ocaro focused on security hardening for the codecentric/c4-genai-suite repository, specifically addressing a vulnerability in the OpenAPI extension. He re-enabled certificate validation, restoring secure default behavior and reducing the risk of man-in-the-middle attacks for API consumers. The solution was implemented in TypeScript, leveraging backend development and API integration skills, and incorporated AI-assisted autofix collaboration to ensure code quality and rapid turnaround. Andres validated the fix through traceable commit messages, demonstrating adherence to security best practices. While the work addressed a single bug, it reflected careful attention to compliance, reliability, and regression-safe engineering changes.