From Digital Platforms to Web3 Innovation: Amanda Cassatt's Journey

Amanda Cassatt represents a rare breed of entrepreneurial thinkers who seamlessly bridged traditional digital media and the emerging Web3 ecosystem. Her career trajectory—from startup founder to blockchain marketing strategist to Web3 infrastructure builder—illustrates how visionary thinking can reshape entire industries. Today, as founder and CEO of Serotonin and co-founder of Mojito, Amanda Cassatt stands at the forefront of Web3 brand development and NFT commerce, having established herself as a key architect of how major enterprises approach decentralized digital commerce.

Early Inspiration and Educational Foundation

Amanda’s path to innovation began in Washington, D.C., where intellectual curiosity was cultivated in her household. Her mother’s background in neuroscience and her father’s expertise in programming created an environment where technical thinking and scientific rigor were everyday conversations. This foundation naturally propelled her toward disciplines that merged technology with human-centered problem solving.

She pursued her academic interests at Columbia University, graduating with honors—earning a magna cum laude degree in English in 2013 from National Cathedral School. This humanities-focused education proved instrumental in shaping her later ability to communicate complex blockchain concepts to mainstream audiences, a skill that would define her professional contributions.

Disrupting Traditional Media: The Platform Empowerment Model

Immediately upon graduation, Amanda joined HuffPost under the mentorship of founder Arianna Huffington, working as a special projects editor. During her tenure, she developed editorial projects spanning diverse topics and contributed original content across multiple domains. However, she recognized a fundamental structural problem in the media industry: creators generated value but captured only a fraction of it.

This insight sparked her entrepreneurial instinct. In March 2015, Amanda founded Slant, a publishing platform with a radically different business model. Unlike traditional media outlets that retained the majority of advertising revenue, Slant inverted this dynamic—writers received the lion’s share of income generated by their work. This revenue-sharing philosophy became her first major contribution to creator economics, predating the broader creator economy movement by several years.

Steering Ethereum’s Market Narrative at ConsenSys

In 2016, Amanda made a strategic pivot toward blockchain technology, joining ConsenSys as Chief Marketing Officer. This move placed her at one of the most critical junctures in Ethereum’s development. Her responsibilities extended far beyond conventional marketing; she became the architect of ConsenSys’s global narrative and Ethereum’s expansion strategy.

Amanda assembled and led a marketing organization exceeding 50 professionals dedicated to supporting ConsenSys’s portfolio of over 50 companies. This portfolio included critical infrastructure projects like Infura (Ethereum’s most-used RPC provider) and MetaMask (the leading Web3 wallet). Through her strategic marketing initiatives, Amanda effectively shaped how the broader market understood Ethereum’s potential and positioning within the emerging blockchain landscape. Her work during this period was instrumental in transforming Ethereum from a nascent protocol into a mature and credible ecosystem.

Pioneering Web3 Commerce Infrastructure

After departing ConsenSys in 2019, Amanda founded Serotonin in 2020—a combined marketing agency and product studio explicitly designed for the Web3 era. As CEO, Serotonin has become the creative and strategic partner for leading blockchain projects seeking to build consumer-facing brands and market presence.

Simultaneously, Amanda co-founded Mojito, an NFT trading and commerce platform engineered for enterprise adoption. Mojito rapidly established itself as the preferred infrastructure for major global brands seeking to launch digital collectibles and navigate NFT commerce within Web3. The platform addresses a critical gap: making NFT commerce accessible and compliant for traditional enterprises moving into decentralized commerce spaces.

Together, Serotonin and Mojito represent Amanda Cassatt’s vision of a Web3 where mainstream enterprises can participate with confidence, supported by both marketing expertise and technical infrastructure.

Contributing to Web3 Educational Frameworks

In 2023, Amanda published “Web3 Marketing: A Handbook for the Next Internet Revolution,” a comprehensive guide written for audiences without deep technical backgrounds. The book demystifies Web3 concepts, marketing strategies specific to decentralized platforms, and frameworks for enterprise participation in blockchain ecosystems. This authorship reflects her commitment to expanding Web3 literacy beyond technical specialists to business leaders and marketing professionals.

Through her writing and ongoing consulting work, Amanda continues advancing public understanding of decentralized technologies and their practical applications for brand building and commerce.

Industry Recognition and Legacy

Her contributions to Web3 and digital innovation earned recognition in Forbes and Inc.'s “30 Under 30” lists in 2016—a distinction that acknowledged her early foresight into creator economics and digital platforms long before Web3 became mainstream.

On a personal note, Amanda married Samuel Cassatt in 2019, establishing roots even as her professional focus expanded globally.

Amanda Cassatt’s evolution from journalist to Web3 innovator demonstrates a consistent philosophy: identify structural inefficiencies in existing systems and build solutions that redistribute power and opportunity toward creators and participants. Her career reflects the possibility of meaningful innovation when vision combines with technical literacy and execution discipline. As Web3 continues to mature, Amanda Cassatt remains a beacon for professionals seeking to understand and shape the next evolution of digital commerce and community building.