Worked on security hardening for the typeorm/typeorm repository by updating the database-tests workflow to support newer, more secure Microsoft SQL Server versions. Addressed a vulnerability in the CI/CD pipeline by modifying YAML configuration files, ensuring that only supported and secure MSSQL versions are tested. This change reduced security risks in continuous integration and improved compatibility verification for downstream users. Focused on database testing practices to expand test coverage for recent MSSQL releases, enabling smoother upgrade paths and better detection of version-specific issues. The work demonstrated attention to secure DevOps practices and effective use of CI/CD and YAML for workflow management.