Hyeseung was born in Seoul, South Korea. She graduated from Seoul Science High School and received her B.S in Chemistry and Life Sciences from Ewha Womans University. Her graduate work in the Tavazoie lab at the Rockefeller University centered around the role of the SOX4 transcription factor in driving cancer metastasis as well as the role of the m6A methylation mark in regulating non-coding RNA processing. She joined the Heiman lab in 2016 as a post-doc and is studying mechanisms underlying normal aging and neurodegenerative diseases.