Worked on maintaining and stabilizing core Modelica repositories, focusing on code reversion and package management to address critical bugs. In the ModelicaStandardLibrary, reverted version string formatting to restore proper release semantics and updated dateModified annotations across multiple .mo files, ensuring consistency with Modelica’s versioning conventions and reducing downstream automation errors. In the RWTH-EBC/AixLib repository, removed a duplicate RadiatorTypes entry from the package order file to prevent build failures and maintain packaging integrity. Leveraged skills in version control, code reversion, and package management, working primarily with Modelica and plaintext to improve repository hygiene and future maintainability.