Mateen is a historian and a filmmaker. He received his PhD from UCL in 2024, and his thesis considered how Persians attempted to manipulate the Greek states by means of their religious culture during the Greek-Persian Wars of the 5th century BC. His work deals mainly with historiography and intercultural interaction. He is interested in ancient languages, cultures and religions. He joined the Invisible East Project in 2024 to help with data entry and the production of a short film.