about Sadie

Passionate about helping businesses look their best

Sadie K Cornelius is a graduate of the University of Texas at Austin’s Moody School of Communications with a Bachelor's in Advertising and a minor in Business. She is a Squarespace Expert, Platinum Level Circle Member and a Senior Web Designer at Knapsack Creative. She is the 2026 judge for the 2nd annual Qube Squarespace awards and sells templates on Squarekicker.

She started SKC Marketing in 2012 and has more than 20 years of client and agency experience in marketing and graphic design, overseeing hundreds of clients ranging from small businesses and entrepreneurs to Fortune 500 companies and established organizations and trade associations. From therapists to event planners, retail and restaurants, salons and other retail, lawyers, interior designers, commerce products, services, consultants, coaches, medical professionals, non-profit organizations, video production, home improvement professionals, and more!

Sadie has been featured in Forbes as a female-owned company, has taught several digital marketing classes at General Assembly, the former Chair of the Women’s Leadership Breakfast for Junior League of Washington, is the former president of the Texas Exes DC chapter, and served on the board of her neighborhood association for 4 years and helped establish the Foggy Bottom West End Main Street where she served as chair for its inaugural year.