Mr. David Marcus is a Co-Founder & serves as Chief Executive Officer at Lightspark. He served as Head at Novi. Mr. David Marcus serves as Advisor at Felix Capital. Previously, he served as Board Member at Coinbase. He formerly served as Vice President, Messaging Products at Facebook. He also served as President at Paypal. He was the Founder and Chief Executive Officer of Echovox. He is a Founder and Chief Executive Officer at Zong. He started his first company, GTN telecom, back in 1996 in Geneva, Switzerland. GTN was acquired by World Access in 2000. In 2000, he founded Echovox, he build direct relationships and connections with mobile operators around the world. He served as Board Member at Diem Association.