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About Us

We’re guided by a powerful principle: the whole is greater than the sum of its parts.

Our approach is built on technical expertise, collaboration, and constant learning.

  • We’re obsessively customer/user/audience-centric.

  • Our insights are backed by data. We buy media to quickly generate the data needed to validate bets big and small.

  • We don’t just measure and benchmark performance on specific channels… we help model your business's broader financial picture.

  • Our team acts as a fiduciary of your growth investments. We offer complete transparency and never charge agency fees.

  • We’re flexible about team structure. We’ll even help transition our work in-house as you grow your team.

  • If you'd like to join our team or find out more about our values - start here.

The basics

Part and Sum was founded in 2018 and has teams in Los Angeles and New York City. We’ve supported more than 70 clients in five countries, and across dozens of industries.

The Part and Sum team has deep experience in strategy, innovation, growth, and data. In addition to our full-time experts, we have a wide network of creators, makers, and thinkers who can supplement our skills as necessary.
Our offices are in New York City and Los Angeles

Leadership

Julie Babb

Julie Babb

Managing Director

Julie’s background includes leading a large organization, launching her own ventures, and teaching Design Thinking at the Obama White House. At Part and Sum, she has built a diverse, world-class team grounded in a customer-first perspective. She’s also the mom of a lively four-year-old.
https://www.linkedin.com/in/juliconiglio/julie@partandsum.com
Jim Babb

Jim Babb

Director of Strategy

Jim is known for his innovative ideas and for ensuring that roadmaps are feasible. A natural collaborator, he has guided many new products and services to market. His love of systems extends to his hobbies: fermenting and playing D&D. Stay tuned for the cooking show he’s developing with his son.
https://www.linkedin.com/in/jimbabb/jim@partandsum.com

Team

Our Strategists provide insights and recommendations across the customer journey.

Our Growth Team helps connect systems and data and optimize strategy delivery.
Anath DiPillo

Anath DiPillo

Principal, Strategy

Anath is an experienced marketing strategist, a go-to-market leader, and a dedicated mentor. She takes pride in developing holistic solutions that solve clients’ problems in a meaningful way. She’s also a dog nerd who’s passionate about pit bull adoption.
Angus Kirkby

Angus Kirkby

Senior Strategy Consultant

With a background that spans music, advertising, and talent management, Angus loves getting hands-on with complex projects and taking ideas from concept to reality. When he’s not working, Angus is either running, watching cricket or daydreaming about the beaches back in his native Australia.
Cecilia Bergman

Cecilia Bergman

Senior Strategy Consultant

An experienced strategy consultant, consumer insights and branding expert, and UX designer-in-progress, Cecilia is driven by the desire to do meaningful work that enables clients to reach their goals. She’s also a kickass mama of two, an avid TV watcher, and a proud Latina from Brazil.
Dani Hoyler

Dani Hoyler

Strategist

Dani is an brand strategist with a background in market research and go-to-market planning. She is passionate about using consumer insights to find opportunities for innovative and sustainable growth. A veteran of the brewing industry, Dani is always ready to talk about new brews and her favorite hops.
Elliott Hasiuk

Elliott Hasiuk

Principal, Digital Media

Elliott is a growth marketing expert specializing in paid media, ecommerce, and emerging platforms in the marketing technology space. He has experience scaling DTC channels and executing complex campaigns. In his previous life as a professional drummer, he lived in Tokyo and toured worldwide.
Emily Fogarty

Emily Fogarty

Principal, Strategy

Emily has deep experience helping clients develop and launch ideas, and is constantly in search of new challenges and ways to cultivate strong relationships. Her fierce determination is what drove her to leave her home in the Australian suburbs for opportunities in New York City.
Evan Petto

Evan Petto

Strategist

Evan’s expertise in ecommerce and email marketing helps clients navigate the challenges of managing rapidly growing businesses. He believes that the best strategies combine a critical lens and flexible thinking. Outside work, Evan enjoys running, hockey, and freelance fashion styling.
Jessica Grasmann

Jessica Grasmann

Experience Operations Lead

Jessica is dedicated to creating an environment that allows everyone to shine. In her previous role at Disney, she developed invaluable strategic customer service skills. From long-range project planning to daily support, Jessica can be trusted to get it done. Ask about her planner collection!
Jessie Gibson

Jessie Gibson

Growth Marketer

A multifaceted technologist, Jessie has many years’ experience in paid media, SEO, and analytics. In addition to his marketing background, he’s a professional photographer and a lifelong entrepreneur, having built several businesses from the ground up. He’s also a proud new dad.
Justin Brock

Justin Brock

Strategist

With a background in performance marketing, UX analysis, and facilitation, Justin brings the power of considerate user experience and design to every touchpoint. He’s also been recognized for his rock climbing escapades and his ability to bike anywhere in NYC, both without serious injury.
Lizzie Combs

Lizzie Combs

Strategist

Lizzie transforms her experience in digital media, email marketing, copywriting, and the arts into an approach rooted in storytelling and connection. She enjoys collaborating, creative brainstorming, and identifying ways to streamline processes. She is also a playwright and a chihuahua mama.
Marykate Surette

Marykate Surette

Growth Marketer

As an experienced growth marketer specializing in paid social, Marykate balances data-driven insight with creative ingenuity when optimizing campaigns. When she’s not designing A/B tests or analyzing ad performance, Marykate can be found reading by the beach or experimenting in the kitchen.
Monish Selvamuthu

Monish Selvamuthu

Growth Marketer

Monish is an experienced growth marketer specializing in performance media and search strategy. One of his greatest skills is the ability to translate complicated technical issues into language everyone can understand. An outdoor enthusiast, Monish enjoys camping, kayaking, and playing soccer.
Nick Doren

Nick Doren

Growth Marketer

A skilled growth marketer, Nick specializes in social media analytics, consumer research, and emerging platforms. He particularly enjoys helping clients evolve in response to today’s fast-changing technology. After work, he likes to check out new restaurants and play a round of golf or tennis.
Rachael Sherman

Rachael Sherman

Strategist

Rachael specializes in innovation, brand strategy, and conducting data-driven experiments to validate concepts. As a strategist, she’s focused on improving customer experiences and forecasting trends to future-proof business models. She loves outdoor concerts and exploring NYC.
Sally Zhang

Sally Zhang

Strategist

Hailing from Guangdong and educated in Virginia, Sally applies global marketing strategies to brands with multinational reach. Her previous role at WeWork taught her resilience and deepened her skillset. The companion of three cats, Sally rejects cat lady stereotypes, and might get a dog someday.
Wesley Duckett

Wesley Duckett

Growth Marketer

Wes is an experienced growth marketer and data analyst who can make dashboards do anything you want them to do. Clients rely on him for data-based insights that improve performance and help their brands grow and evolve. He’s also known for his ukulele skills and his love of soccer.

Want this team on your challenges?

Let’s talk

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