NUMA - Key Persons


Andy Ruff

Job Titles:
  • Chief Product & Tech
Andy ran product as Chief Product Officer at Location Labs, which, under his leadership, he grew to one of the largest mobile consumer subscription services in the world with over 3M monthly paying subs. Prior to Location labs, Andy led the 100 person team building Microsoft Outlook for Mac, increasing annual revenues of Microsoft's industry-leading Mac email software by 100%. Andy is a lifelong product builder since age 13, when he built a dial-in bulletin board system server. He has dual BS degrees from Iowa State University.

Joel Grossman - President

Job Titles:
  • President
Prior to founding NumberAI, Joel was President of Location Labs where he ran Sales, Business Development, and all operations. In his 10 years at Location Labs, Joel spearheaded the company's growth from 15 people to a $220M acquisition. Before Location Labs, Joel was a Lead PM at Microsoft where he first led innovations first in Windows before moving to the company's early IoT projects, launching the initial SPOT (Smart Personal Object Technology) devices. Joel holds an MBA with Distinction from Harvard Business School and a BS in Computer Science from Brown University.

Tasso Roumeliotis - CEO, Founder

Job Titles:
  • CEO
  • Co - Founder
Tasso founded Location Labs and was an early pioneer in mobile and location-based technology. He built it to 200+ people and eventually sold Location Labs for $220M with only $19M of primary capital invested. Location Labs was profitable for seven consecutive years and was an INC 500 company. He was also an Ernst & Young Entrepreneur of the Year Finalist Award winner. Before Location Labs, Tasso worked as Vice President for Claridge Investments (Bronfman Family Office) and as an associate in the merchant banking group of Donaldson Lufkin Jenrette. Tasso started his career at Bain & Co where he was the highest ranked associate in his class. He has an MBA from Harvard Business School and a B.Comm from McGill University in Montreal.