Saeju Jeong is the co-founder, Executive Chairman, and former CEO of Noom, the NYC-based leading digital health and wellness company founded in 2008 with a mission to empower everyone better longer,through behavior change. Under Saeju's leadership as CEO for 17 years, Saeju secured $657MM in investment from prominent firms including Sequoia Capital and Silver Lake, grew the business to unicorn status, achieved profitable, sustainable growth, led thousands of employees and impacted millions of lives globally.

In July 2023, Saeju stepped into the role of Executive Chairman after guiding the company through a strategic CEO succession.. In his role as Executive Chairman, Saeju continues to develop the Noom business on the global stage. Saeju leads Noom’s delegation with the World Economic Forum, and serves on the Steering Committee for the Forum’s Healthy Workforces initiative. Saeju serves on the board of directors of the Foundation of the National Institutes of Health. He is a member of the 2024 class of The Aspen Institute’s Henry Crown Fellowship, and his leadership has been recognized through multiple prestigious accolades, including EY’s Entrepreneur of the Year National Award in 2020, Harvard Business School’s Entrepreneurial Company of the Year in 2022, Goldman Sachs' Builders and Innovators Award in 2022, Inc.'s 500 Great Entrepreneurs in 2019. Saeju is actively involved in the global entrepreneurial community as an investor with major VC firms including Sequoia Capital and as co-founder and co-chair of United Korean Founders, the largest Korean founders community in the United States.

Born in South Korea to a family of esteemed doctors, Saeju Jeong's aspiration to help people and be an innovator was inherent from a young age. He began his entrepreneurial journey by founding South Korea’s first-ever heavy metal e-commerce business. However, it was the passing of his father, a renowned doctor, that redirected the course of his life and profoundly influenced Saeju's entrepreneurial and personal direction. It was his father’s reflection on his experience in healthcare that inspired Saeju to transform sick care into preventative care and through founding Noom.

Today, Noom is a leading destination for whole-person health, offering five comprehensive programs focused on weight management, obesity care, diabetes, women’s health, and stress management. The brand has become a household name, extending its influence beyond digital health into publishing—The Noom Mindset and The Noom Kitchen both debuted as bestsellers. Noom’s impact has also been recognized across top media platforms, with Saeju featured on How I Built This, Masters of Scale, a feature profile in Inc., and a cover story in Forbes Korea (February 2025).