Who is this Israeli propagandist Umut Ataseven?

Avraham Levi aka Umut Ataseven has reacted on social media with his pro-Israel posts in the WhatsApp case. It turned out that Levi, who worked as a visa officer at TGS, a subsidiary of Turkish Airlines, was a dual citizen and wrote articles supporting Zionism in Independent Turkish, run by Nevzat Çiçek. He was charged with “propaganda of a terrorist organization” to the prosecutor's office.