Saeju Jeong

Jeong Saeju is an American entrepreneur and a co-founder, chairman, and the former CEO of Noom, a weight loss company.

Early life and education

Jeong was born in 1981, in South Korea, to a family of doctors. In 2001, he founded BuyHard Productions, an independent music label with a focus on heavy metal. In 2002, he joined the Republic of Korea Army as an IT specialist. He pursued a Bachelor of Engineering degree from Hongik University, but in 2005, he dropped out to move to Manhattan, New York.

In Harlem, Jeong met Noom co-founder Artem Petakov. In 2007, the two established WorkSmart Labs and itsfirst prototype, a stationary-bike accessory. Jeong worked various sales jobs and as a food delivery driver.
In 2011, WorkSmart rebranded to Noom and raised a US$2.6 million seed round led by Kleiner Perkins.
Noom relaunched in 2017 with a subscription-based weight-management app.
In 2020, Jeong was awarded the Ernst & Young Entrepreneur of the Year Award.
In 2021, Noom raised $540 million in funding, valuing the company at $3.7 billion.
In 2023, Jeong stepped down as Noom CEO and was replaced by Geoff Cook, a founder of The Meet Group.