Meet The Team

Sam Kim
Samuel Kim is a founding partner of Umbrella Network, a layer-two oracle empowering the next generation of DeFi applications. Previously, he was the founder and CEO of Lucidity, a blockchain-based transparency solution for digital advertising and a co-founder of Gimbal, a mobile advertising platform. He is a graduate of Columbia University and received his MBA from Chicago Booth School of Business, where he concentrated in analytic finance.

Sam Kim

Partner

Dariusz Zacharczuk
Dariusz is a senior blockchain engineer at Umbrella Network. He works closely with Alex Voloshko in the design and development of Umbrella’s oracle. He is a certified Ethereum and Quorom developer with several years of blockchain experience. He is most proud of his implementation of an efficient Plasma Cash while working at Lucidity. He has a strong interest in Zero Knowledge Proofs and continues to do research in his spare time.

Dariusz Zacharczuk

Blockchain Engineer

John Chen
John Chen is the Head of Marketing at Umbrella. He is also the Founder and CEO of CPXi Asia, an independent regional digital media agency serving Southeast Asia with offices in Singapore, Indonesia and Malaysia. John is an experienced entrepreneur with over 20 years experience starting and operating businesses with global presence and across multiple verticals spanning media and advertising, consumer goods, and offline events. He received his BA from Columbia University, where he studied Computer Science and Economics.

John Chen

Head of Marketing

Alex Voloshko

Blockchain Engineer

Brian Weaver

SRE

Alexandre Karpinski

Front End Engineer

Leonardo Santiago

Front End Engineer

Amanda Valinoti

UX Designer

Priyeshu Garg

Content Writer

Jessica May

Operations Manager

Miguel Morales

Technical Advisor

Rodrigo Barrios

SRE

Douglas Marques

Back End Engineer

Eugenio Di Santo

Engineer Manager

*Team bios do not represent employees of Umbrella Network, for team members may be an advisor, contractor, or other non-employee contributor. There are no US, UK, EU, nor Canadian employees of Umbrella Network.
Contact Us

The best way to get in touch with our team is by joining the official Umbrella Network Discord server and heading over to the support channel. Our engineering team is always glad to hear your concerns and help you with any issues that might come up.