Pieter van der Meulen enhanced the OpenConext-engineblock repository by implementing an interoperability-focused feature that defaulted the transmission of schacHomeOrganization and email attributes via UserAttributes. He approached this by updating configuration management and documentation, ensuring that these attributes are consistently available to dependent systems and improving data alignment across integrations. Pieter also revised the SFO AuthnRequest handling for GSSP Fallback, reflecting all changes in the changelog for versions 6.18.0 and 6.17.0. His work, primarily using YAML and Markdown, delivered clearer release notes and reduced integration friction, demonstrating a focused and well-documented approach to cross-system attribute management.