Our Agencies

The new breed of advertising agency


Wondersauce is a creative agency. Founded in 2011, the agency creates products, platforms, and campaigns for startups and large brands. Wondersauce has deep expertise in ecommerce, publishing, and full interactive brand experiences spanning screens. In addition, the company creates utility driven campaigns and activations along with video and rich editorial. Wondersauce is headquartered in New York City, has more than 80 employees and a second office in Columbus, Ohio. Key clients include the Carlson Rezidor Hotel Group, Bloomin’ Brands, Federal-Mogal Motorparts, and Google.


  • content
  • design
  • Operation
  • strategy
  • Technology
  • UX
  • The Wondersauce leadership team

    Photo left to right: John Sampogna, Brett Waszkelewicz, Seth Klassen, Eric Mayville

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Agency Leaders

  • John Sampogna

    Sampogna is involved in all aspects of Wondersauce and holds a passion for understanding different business models and the evolution of agency services. He stumbled into advertising after briefly working in the music industry and seeing first-hand how digital could lead to drastic and disruptive change. Previously at Schematic, and Code & Theory, Sampogna built up his experience in strategy, production, and account services before deciding to create his own agency with his other Wondersauce cofounders. At Wondersauce, Sampogna's main focus is ensuring that the agency is constantly positioned to meet the needs of its customers and remain a step ahead of its competition. In 2013, Sampogna was named to Business Insider's Most Creative People in Advertising Under 30 List.
  • Eric Mayville

    Eric Mayville leads operations, finance, and culture at Wondersauce, ensuring that the company is run efficiently with an environment that spurs creativity, innovation and respect. A graduate of Ohio University, Mayville’s career saw him commanding a variety of roles within digital firms such as Code & Theory, Razorfish, and AgencyNet. Those roles included motion design, front ­end development, visual design, creative strategy, and user experience design and planning. At Wondersauce, his entrepreneurial spirit has been paramount to Wondersauce’s growth and strategy. Also named one of Business Insider’s Most Creative People in Advertising 30 Under 30, Mayville is involved in the community and sits on the NoMAD Business Alliance to ensure that businesses and the community within the NoMAD district of Manhattan have the issues that they care about heard by city council and other members of local government.
  • Seth Klassen

    Seth Klassen helps lead the creative team at Wondersauce, with focus on emerging technology, motion, and prototyping. Alongside Brett Waszkelewicz, Seth oversees all creative output at Wondersauce, ensuring the company standards of quality and creative vision are carried through on each project. An Ohio University grad with an affinity for travel and exploration, Klassen began his career on the West Coast in the midst of the burgeoning tech industry. There, he developed a variety of skill sets, including visual & motion design, user interface design, front­end development, interaction design, and generative design, to name a few. Key to his and Wondersauce’s success is his desire to push the creative process and innovate beyond industry standards – that desire also landed him on Business Insider’s Most Creative People in Advertising 30 Under 30 List.
  • Brett Waszkelewicz

    Brett Waszkelewicz leads the design practice at Wondersauce alongside his partner, Seth Klassen. He is responsible for shaping the company’s overarching design philosophy, and guiding the team of directors, while creating an environment of collaboration, and support, in order to yield world-class results from employees that feel challenged, enriched, and rewarded. He has held positions at a number of leading digital agencies including Code & Theory, where he served as Creative Director and led the design of some of the web’s most trafficked destinations, such as Mashable and The Verge. His work has been recognized by numerous publications and awards organizations including Time Magazine, The Webby Awards, Communication Arts, .Net Magazine, The W3 Awards, Awwwards, and FWA. He is also active in the creative community, frequently speaking at industry events and institutions.

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