Christian Castellano

— Managing Director, Strategy

With over 20 years of agency experience in brand strategy, communications planning, and digital strategy, Christian brings a strong background in financials, technology, B2B, and higher ed. As an integrated digital marketer, Christian helps clients transform their most critical marketing mix of brand, product, sales, and demand generation into a unified experience that inspires services and motivates customers. He is unafraid to challenge the status quo to bring new transformative ideas to the table that push the boundaries of what’s possible through a mix of technology, content, and design.

Before joining Sullivan, Christian worked at Digitas, where he worked with clients including Comcast and American Express. Prior to that, he spent time at Hill Holliday, where he led an integrated B2B group to drive leads and sales across the SMB market.

Christian studied at the University of Delaware, where he earned his BSBA in Marketing.

Christian enjoys perpetually renovating his NYC apt with his wife and taking care of their 5 Koi fish.