He held an eminent position at the Gladzor School of Illuminated Manuscripts in Syunik, established at Vayots Dzor under the patronage of the Orbelian family's historian, Stepanos Orbelian. Of the manuscripts authored by Momik, only several survive: one is found at the repository of the Mekhitarist Order in Vienna and three others are found at the Mashtots Institute of Ancient Manuscripts in Yerevan, Armenia.

Momik was the author of the miniatures for the Gospel, "Entombment" and "Angel Appearing to Holy Women", created in Glazdor in 1302, of the building of Astvatsatsin church in Areni village (1321), of its wonderful reliefs and of a number of khachkars. He also designed and carved the masterpiece church of S. Astvatsatsin at Noravank Monastery in Armenia.

Remains of his works:

• Books
  • Four handwritten Gospels: the Gospels of 1292, 1302 (or the Gospel of Stepanos Orbelyan), 1283 (unsigned), the collection of 1283-84.

• Sculptures
  • The Cross stone of 1308 in Noravank, the image of the Mother of God and the Child in Areni church (1321), the sculptures of the Mother of God and God the Father in the porch of Noravank. He also carved a cross-stone for Lady Tamta Zakarian.

• Architectural structures
  • The vestibule of the Noravank church, the Areni church, the two-story tomb-church of Prince Burtel in Noravank, Zorats church of Yeghegis, and St. Grigor's church of Tatev are also attributed to him.

• Supposedly:
  • The design and partial construction of Burtelashen Church