Drupal version 10 development on internal Knowledge Library migration project from OpenText Content Server to Drupal. My focus was the design, build and implementation of the data migration process, also involving SQL Server stored procedures and functions development, and Drupal custom module code development. The Drupal work included the development of Event Subscribers and Access plugins amongst other components such as custom forms, views and a custom add-on to the Feeds and Tamper projects for handling hierarchical taxonomy vocabularies during the migration process.