I can't imagine that either, but this isn't a case between Stefan and Mailchimp, this is a case between Stefan and Nandini in Tort Court where the requirements are much lower:
1. The existence of a contractual relationship or beneficial business relationship between two parties.
Stefan is on mailchimp
2. Knowledge of that relationship by a third party.
Technologies: General ML & Data Science; Python, SciKit Learn, Keras, SQL, MongoDB, Flask; NLP tools like BERT, WordPiece, etc. ; AWS; Enough DevOps to run an ML pipeline