Meet Our Team

The Product Science Group is made of passionate product leaders with decades of experience across startups and enterprises.

Mark Enache

Designer of all the digital things who strives towards experiences that bring people together on common ground, both within teams and with users.

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Holly Hester-Reilly

Product Leader & Founder

Holly is the founder of Product Science Group. Holly was a product leader at MediaMath during their journey to becoming a unicorn and at Shutterstock in the years after their IPO. She has spent the last 15 years working with startups, high-growth companies, and enterprises.

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Allison Cassing

User Researcher

Allison is a user researcher with over a decade of product management experience focused in data and insights at growth-stage startups MediaMath and Newsela. She has a deep interest in user experience and motivation.

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Let's Talk

I love to hear from executives and product leaders who want to build high-growth products, teams, and companies that can compete in today's fast-changing world.

Let's chat and see if we can work together.

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