Behind every successful campaign is our team of media buying and creative experts, bringing 15+ years of experience in helping e-commerce brands scale. Meet the minds driving client growth at Sum Digital.
Terry Whalen
President
Co-founder and advertising expert with deep roots in digital marketing. Founded Sum Digital in 2005, evolving it from a PPC search company to a full-service digital advertising partner specializing in ecommerce growth. Previously CEO of Epitonic (acquired) where he secured $3.5M in funding, and led marketing for GoToMyPC (acquired by Citrix). MBA from UC Berkeley's Haas School of Business and BA in Political Economics. Google Search certified with expertise in scaling DTC brands through data-driven strategies. When not driving client success, Terry braves the waters of San Francisco Bay for open water swimming.
Joey Muller
Vice President
Co-founder and digital strategy expert with extensive experience in paid social and analytics. Joined Sum Digital as Partner in 2011, transforming it into a leading digital advertising agency serving high-growth ecommerce brands. Previously Director of Online Marketing at INDI, where he led comprehensive digital strategy across PPC, SEO, email, and affiliate marketing. BA in Cognitive Psychology from Dartmouth College with deep expertise in consumer behavior. Google certified in Search and Analytics. When not driving client growth, Joey occasionally performs alongside legendary artists like Willie Nelson and The Doobie Brothers.
Patrick McDuffie
Senior Account Manager
Seasoned account manager with 10 years' experience in B2B and D2C digital advertising. Has driven results for major brands across outdoor lifestyle and fashion industries. Previously managed SEM for Microsoft's cloud technologies. Marketing degree from Cal State Long Beach and certified digital media buyer. When not optimizing campaigns, Patrick's either surfing the California coast, exploring wine country, or perfecting his latest culinary creation.
John Lawlor
Senior Account Manager
Digital advertising expert specializing in paid social, based in Los Angeles. Experience driving results for major B2C brands including Chipotle, Ancestry, and GameStop. Brings deep expertise in performance marketing and campaign optimization to Sum Digital's client campaigns. Pepperdine University graduate. When not optimizing campaigns, John's either at his home gym, scuba diving in Hawaii and Asia, or hunting down the best karaoke spots in LA.
Noah Hardy
Senior Account Manager
Media Manager bringing Fortune 500 expertise to Sum Digital's campaigns. Expert in paid search, paid social, and programmatic advertising, with experience managing multi-million dollar budgets and leading analyst teams at VaynerMedia. Background in DTC and ecommerce strategy across digital platforms. When not driving client success, channels his strategic thinking into remodeling his new home in Milwaukee.
Sydnee Leuellyn
Content Creator
Content Creator bringing strategic vision to Sum Digital's digital campaigns. Expert in photography and videography, with successful collaborations with Algenist, REAL Food From The Ground Up, and FabFitFun. Background in YouTube content creation and personal development. Known for exceptional client experience and meticulous attention to detail. When not creating content, finds inspiration at the beach, painting, and exploring museums.
Isabell De La Cruz
Creative Production Associate
Creative Director bringing strategic vision to Sum Digital's campaigns. Degrees from UC Davis and SFSU. Expert in photography and visual storytelling, with extensive experience in creative direction and education. Known for capturing authentic brand stories and driving creative excellence. When not developing content, finds inspiration through antique hunting and outdoor adventures with her wire fox terrier, Loaf.
Brenda Aguilar Rice
Content Creator
Visual storyteller bringing international perspective to Sum Digital's campaigns. SCAD graduate with expertise in video production, graphic design, and architecture. Creates compelling content that drives exceptional results across digital platforms. Known for creative innovation and meticulous attention to detail. When not developing campaigns, balances family life with singing and continuous artistic exploration in San Francisco.
Want to Shape the Future of Ecommerce Advertising?
We're growing our team of digital marketing experts who turn ambitious DTC brands into industry leaders. Visit our Careers page to discover open positions and be part of Sum Digital's next chapter.
Sum Digital, Inc., 240 2nd Street, 2nd Floor, San Francisco, CA 94105, United States
(415) 376-7391 info@sumdigital.com