Brooklyn, NY

Hi!

I’m Elliott.

As Partner and Head of Media & Growth, I lead integrated media strategy across paid media, ecommerce, and full-funnel measurement.

About Elliott

Elliott is a Partner and Head of Media & Growth at Part and Sum, where he leads integrated media strategy for category-defining brands including GitHub, Cash App, IMAX, Notion, Mejuri, Bluevine, Life Time Fitness, Ad Age, and PAW Patrol.

With 15+ years of experience building and scaling full-funnel growth systems, Elliott helped grow Part and Sum’s media practice from its earliest stages into an omnichannel, enterprise-grade operation. He partners closely with founders, executives, and cross-functional teams to align media investment with measurable business outcomes, balancing efficiency, scale, and long-term brand growth across B2C, B2B, and DTC.

A founding member of the growth team, Elliott believes in empowering strong operators and building durable systems. His leadership style blends analytical rigor with creative ambition, fostering teams that challenge assumptions, think strategically, and execute with accountability.

Earlier in his career, Elliott lived in Tokyo, consulting for global brands while launching and scaling ecommerce ventures from $0 to millions in revenue. Before marketing, he toured internationally as a session drummer, collaborating with brands such as Audi and H&M and artists including Pharrell, experiences that continue to shape his culturally fluent, creator-first approach to modern media.

Here at Part and Sum we bolt on to transform digital experiences and grow brands by seeing through the eyes of your customer.

<aside> <img src="/icons/rocket_gray.svg" alt="/icons/rocket_gray.svg" width="40px" /> Elliott’s POV on growing brands

“Beyond finding product market fit, it’s essential to balance media investments with realistic goals so that you don’t overcommit to targets that are too aggressive. Scaling media campaigns is a balancing act between making sure that you’re not missing out on acquisition opportunities while ensuring that each channel is driving incrementality. As the privacy landscape becomes increasingly difficult to prove direct response ROI, KPIs like marketing efficiency ratio and measurement tactics including dark market tests and causal impact studies are becoming instrumental to prove the value of media investments.”

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When we’re not collaborating…

• Snowboarding 🏂
  • Recently went to Niseko with my brother.
• Scuba Diving 🤿
  • Recently went diving with whales in Okinawa with my best friend.
• Learning languages 🗣
  • Trying to become fluent in Japanese.

psOS Spotlight

<aside> <img src="/icons/star_gray.svg" alt="/icons/star_gray.svg" width="40px" /> Elliott’s psOS Favorites

• Where do things stand with attribution?
• Migrating to GA4 </aside>

<aside> <img src="/icons/drafts_gray.svg" alt="/icons/drafts_gray.svg" width="40px" /> Elliott’s Article in the psOS

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