Mattan Griffel

Adjunct Assistant Professor of Business at Columbia University, Co-Founder of Ophelia and One Month

Mattan Griffel

Mattan Griffel is a Partner and Senior Vice President of Talent Strategy & Performance at Invisible, an operations innovation company.2 3 He is also an Adjunct Assistant Professor of Business at Columbia Business School, where he teaches two courses to MBAs and Executive MBAs: Python for MBAs and Intro to Databases for Business Analysis.1

Griffel is a two-time Y Combinator-backed entrepreneur and the Co-Founder of Ophelia, a company that helps people quit opioids without having to go to rehab.4 He was previously the Co-Founder and CEO of One Month, an online video learning platform that teaches coding, growth hacking, and other skills.1

Some of Griffel's other notable experiences include:

Lang Coach at the Eugene M. Lang Entrepreneurship Center at Columbia Business School1
Member of the YPO Metro NY Chapter1
Lang Center Innovation Fellow at Columbia Business School1
Co-Founder and Chairman of One Month1
Partner at GrowHack, the first-ever growth hacking agency for startups based in New York City1

Griffel has received several honors and awards, including being named to the Forbes 30 Under 30 list in 2015 and receiving the Dean's Award for Teaching Excellence from Columbia Business School in 2019.1

Highlights

Sep 13 · Entrepreneur

How to Tame Meeting Overload - Entrepreneur

Sep 13 · Entrepreneur

How to Tame Meeting Overload - Entrepreneur

Experience

Adjunct Assistant Professor of Business at Columbia University - Columbia Business School (August 2016 - Present)

Co-Founder & President at Ophelia (December 2022 - May 2023), Co-Founder, President & COO at Ophelia (December 2019 - December 2022), Co-Founder & Chairman at One Month (April 2017 - May 2021), Co-Founder & CEO at One Month (May 2013 - April 2017)