Hossein Houssaini is the Board Advisor of AdTonos, audio only platform that, through curated audiences, connects inventory owners with ad buyers, uplifting the audio experience and relevance. Hossein is the founder of Ho/Pe Advisory, a London-based advisory firm working with clients like MediaMath, Bang & Olufsen, MIQ, and ProSieben/Virtual Minds to drive innovation, M&A, and digital growth. He is also Co-Founder & Strategic Advisor at Kjupi Ads, advancing ESG-compliant programmatic advertising, and Managing Partner at RE:DEF, leading digital retail transformation. A former Global VP at Havas, he co-founded Havas University, which has trained over 100,000 professionals in programmatic advertising. Earlier, he held leadership roles at Google and DoubleClick, overseeing Rich Media for DACH and the Nordics. Hossein also serves on the boards of ExChain and i-com.org, and has been recognized by MADcon, ExchangeWire, and Adzine for his industry leadership.