Leaders in Digital Identity and
Programmable Communications

Ryan Disraeli is a co-founder of TeleSign and was instrumental in pioneering mobile phone-based two-factor authentication, a security service that today protects billions of online accounts around the world. Ryan currently oversees strategic company operations and key initiatives, providing industry expertise and consultative support to the executive team and board of directors.
Disraeli is a frequent speaker in the area of online fraud and authentication and regularly provides commentary in the industry. In 2017 Disraeli was named to the “Forbes 30 Under 30 List” and in 2018 was named the USC Alumni Entrepreneur of the Year.

Weerasiri is the CFO of TeleSign, he also oversees legal and security. Prior to joining TeleSign, Tim held finance leadership positions at Enervee, Victorious and Riot Games. In his role, Tim aligns financial metrics with business strategy to drive growth. Outside of the office Tim can be found scuba diving, skiing, drinking wine, and reading extensively.

Stubblefield co-founded TeleSign in 2005 and today helps to drive TeleSign's product strategy and identify opportunities for innovation--ensuring that TeleSign delivers groundbreaking technology that best addresses market needs. As part of TeleSign's founding team, she was instrumental in conceptualizing and developed its platform and patented technology. While developing TeleSign's technology, she also oversaw an engineering team at an internet incubator that launched several fast-growing web properties. She remains an active consultant, advising internet start-ups and consumer product sites and is a frequent speaker at industry events, including Mobile World Congress and Mobile Computing Summit.

Wei Lin oversees TeleSign Engineering organization and is responsible for product development. Lin is a college lecturer and a veteran of software industry and held various leadership roles at Symantec, CAE and Leco Instrument. Prior joining TeleSign, she taught computer science at the Computer Science Department of California Polytechnic State University Pomona. Previously, Lin spent 16 years at Symantec where she was a Sr Director of Engineering responsible for development of various Norton security products, Norton eCommerce, and core security solutions included in both Norton and Symantec enterprise products.

Stovall is responsible for worldwide sales, global channel sales and global customer success/client services teams at TeleSign. Prior to joining TeleSign, Paul worked for more than 20 years as an Enterprise Sales Executive at several startups, most recently as the Sr. Director of Sales at Seattle based startup Usermind.

Demarche oversees all Business Development activities, which also include Product Management, Strategy and Messaging activities. Coming from BICS, he was part of the M&A team that led the acquisition process of TeleSign. Following the transaction, he was then put in charge of the Post-Acquisition transition. In his position at TeleSign, Demarche is also leading the implementation of the synergies between BICS and TeleSign and further optimization of the transaction.

Yoon is responsible for keeping all network systems running smoothly and efficiently in order to provide clients with a reliable and consistent experience. He has over 16 years of experience in providing reliable operations in several industries, from supporting and managing small to large organizations.

Yoon is an ever-evolving technologist at heart, who enjoys tinkering with and learning about the latest technology and gadgets. When he is not working, he can be found on the golf course.

Kern oversees all routing and pricing analysis for TeleSign. Prior to joining TeleSign, he was the VP, Commercial Strategy at Surf Air, responsible for optimizing route cost and pricing strategy of the airline.  Prior to Surf Air, Mac worked at Virgin America, focused on Revenue Management.

Ashley is a data-driven leader that enjoys building unified cultures that cultivate individual and organizational growth and achievement. She has extensive experience leading the visioneering, development, and implementation of innovative talent acquisition and people operations programs in growth-oriented, scaling environments. Ashley previously ran talent and people operations teams at several software companies including Cloudvirga, Drip, Leadpages, and Houzz.

As TeleSign’s GM, Nenad focuses on the team in Belgrade by improving processes, programs and communication channels, as well as employer branding and community engagement. From 2012-2017 Nenad grew the Serbian office to more than 160 employees which supported all of TeleSign’s global operations. His background includes leadership roles in both enterprise and startup environments in IT, Telecommunications and FMCG industries. He has scaled several companies across Central and South Eastern Europe. In addition, Nenad is very active in the Belgrade community belonging to various economic associations.