David Hahn

David Hahn is currently the Co-Founder & COO at Guideline, a company focused on simplifying media buying and selling. David is also a Partner at ATO Strategic, an advisory and investment firm. Additionally, David holds positions as a Venture Fellow at Sapphire Ventures, LLC, a Limited Partner & Investor at FLEX Capital, and as an Investor and Advisor at Eulerity. David serves as a Mentor/Advisor at Astia Angels and as an Advisor at Bluecore. Previously, David was an Advisor at MMGuardian and a Board and Executive Advisor at RealtyCrunch Inc. David Hahn is an alumnus of the University of Cape Town with a degree in Information Systems, Finance, and Strategy.