Miarta Sek held the position of Je'daii Temple Master within the Je'daii Order on Tython. She was a female Sith during the peak of the Infinite Empire's power.
Miarta Sek, a Force-sensitive Sith, was born into the Sek clan. This clan consented to her training in the Force by the Je'daii Order. This training took place on the planet Tython, a part of the Tython system encompassing nine planets, collectively known as the Settled Worlds. Sek, skilled as a healer from the Great Temple of Mahara Kesh, gained the designation of Je'daii Temple Master. She managed the activities at the Temple of Force Skills, Qigong Kesh. Being the maternal grandmother of Je'daii Journeyer Sek'nos Rath, Sek, along with the other Temple Masters, constituted the Je'daii Council, communicating through holocommunication at the Temple of Balance, Akar Kesh.