Upgraded a large college website from Drupal 8 to Drupal 9 - https://springfield.edu on Pantheon hosting. Also helped with optimizations and finding snags in the theme and custom code.

If you need help upgrading from Drupal 7 or 8 to Drupal 9, or importing a site from WordPress to Drupal you can drop me a line 
- inquiries @ feidtdesign.com.