Terry Whalen, President
@tdwhalenho | LinkedIn

Terry is a marketing expert who started his career as the CEO of Epitonic, an online music company based in San Francisco. He helped the company secure $3.5 million in funding from CNET and angel investors, and the company was eventually sold to Palm Entertainment in 2001.

After leaving Epitonic, Terry started marketing GoToMyPC software, which led to the company's acquisition by Citrix Systems in 2003.Terry then founded Sum Digital (formerly CPC Search) in 2005, and grew it from a PPC search company to a full-service digital marketing partner.

Throughout his marketing career, Terry has generated millions of dollars in revenue for his clients through his expertise in search and online marketing.Terry holds an MBA from UC Berkeley's Haas School of Business, and a BA in Political Economics from UC Berkeley. He is certified in Google Search advertising. When not tending to his clients, Terry can often be found swimming amongst the great whites in San Francisco Bay.

Joey Muller, Vice President
@jmthefourth | LinkedIn
Mentor @ Galvanize

Joey is an experienced digital marketing expert with a background in IT and website development. He began his online marketing career at HD Publishing Group in 2009, and later served as the Director of Online Marketing at INDI, where he oversaw all aspects of the company's marketing strategy, including PPC, SEO, email, social media, and affiliate marketing.

In 2011, Joey joined Sum Digital as a Partner, and has since worked with clients such as Lyft, Little Passports, 4WheelParts, Tatcha Beauty, and PLAE. Joey holds a BA in Cognitive Psychology from Dartmouth College and is certified in Google Search advertising and Google Analytics. In his free time, he enjoys sharing the stage with musical artists such as Willie Nelson and The Doobie Brothers.

Patrick McDuffie, Senior Account Manager
LinkedIn

Patrick is a marketing professional from San Diego with 10 years of experience managing B2B and D2C digital accounts. Before joining Sum Digital he worked on SEM efforts for Microsoft's cloud and enterprise technologies. He now focuses on building steady growth strategies for top consumer brands across the outdoor lifestyle and fashion industries.

Patrick holds a marketing degree from Cal State Long Beach, where he co-created a music blog that gained over 20k followers on Facebook in the first year and led to interviews, event planning and talent booking in Southern California. This sparked his passion for digital marketing, and he eventually moved to San Francisco to pursue the agency side of all things digital media.

In his free time, Patrick stays true to his roots as a surfer, home cook and handyman. He enjoys cruising the California coast, international food and surf travel & exploring wine country around the Bay Area.

John Lawlor, Senior Account Manager
LinkedIn

John is a digital marketing expert living in sunny Los Angeles with over four years’ experience in paid social. Having worked on clients like Chipotle, Ancestry, and GameStop, John is no stranger to B2C brands. John moved to LA from upstate New York shortly after graduating from Pepperdine University in 2017.

In his free time, John loves working out at his home gym, reading (mostly sci fi/fantasy), and going out on the weekends with friends. He also enjoys scuba diving, traveling to Hawaii and Asia, as well as singing karaoke.

Krysta Hudson, Creative Production Associate
LinkedIn

Krysta was born and raised in Paradise, California and received her BFA in Photography from the Academy of Art University in San Francisco. She joined Sum Digital as a Creative Production Associate where she implements her photography, creative strategies, and graphic design skills in paid advertising on Meta, Instagram, and TikTok. When she's not working or taking photos, you can find her serving the youth in San Francisco, attending local art museums, or exploring the scenic beauty of the Bay Area with her husband and 1 year old daughter. 

Amelia Sakai, Creative Production Associate
LinkedIn

Amelia was born and raised in Massachusetts and has a BS in Business Administration from Worcester State University. As a Creative Production Associate, she wears many hats - uploading ads on Meta, video editing, graphic design, and more. In her free time, she enjoys taking walks around the city, playing games with friends, and searching for the best chicken sandwich in town.

Sydnee Leuellyn, Content Creator
LinkedIn

Sydnee is a Content Creator from Los Angeles who enjoys everything creative! After graduating college in 2016, Sydnee moved to New York where her creative journey began. She started her YouTube channel in 2017 and has been creating content ever since! Sydnee moved back to Los Angeles in 2020 to be closer to family and friends. When she’s not working, she’s usually at the beach, painting, or at the museum.