John-Marcus (JM) Phillips serves as Vice President of Product at Effectv, the advertising sales division of Comcast Cable. In this role, JM manages a team of product leaders who develop cross-screen, data-driven advertising products. Simultaneously, JM leads the organization in understanding how to become a multi-currency organization and evangelizing how a first-party multi-screen metric helps Effectv and its customers have a stable reference point that's equally meaningful in both streaming and linear television environments.   

Before joining Effectv in July 2021, JM led product strategy and development of cookieless identity resolution as Vice President of Product at Nielsen. There, he focused on digital measurement and identity architecture. Prior to his tenure at Nielsen, he was employee #13 at Beeswax – a demand side platform that was acquired by Comcast in 2020 – where he founded and scaled its Professional Services business. 

JM serves as the executive co-sponsor of Comcast Advertising’s Black Employee Network NY chapter, which enhances, influences and strengthens the relationships of Black employees with each other and the wider Comcast community. 

A thought leader with more than 15 years of experience within the streaming and product industries, JM is often interviewed by top media outlets and speaks at industry conferences. He was recently named one of FierceVideo’s 2022 Emerging Leaders. JM also acts as an Operating Partner at Zeal Capital Partners, where he advises early stage companies navigate product-market fit and product development. 

After completing his bachelor’s degree in computer science and math at Morehouse College, JM received his Master of Engineering at University of California Berkeley, where he was named a Fellow of the Fung Institute of Engineering Leadership. 

JM currently resides in New York with his family.