Isabelle Schnellbuegel is Chief Strategy & Transformation Officer at Accenture Song.

An entrepreneur at heart, Isabelle thrives on crafting visionary strategies for an increasingly fragmented world and ever more empowered consumers. Her ultimate goal is to drive positive impact – not just for businesses, but for people and the planet as well.

She has over 15 years of experience spanning marketing, brand and digital strategy, consulting, and innovation. Before Accenture Song she worked for Ogilvy, Dropbox, Google, and Serviceplan.

Isabelle co-founded THE STRATEGY COLLECTIVE, a network for strategists to co-create the future of strategy, as well as the strategy conference STRAT CON.

In 2023, German industry publication Horizont recognized her as one of the "40 under 40" individuals to watch. In 2025, W&V named her among the Top 100 people in marketing.