Developer
Telesign connects, protects, and defends the customer experience with intelligence from billions of digital interactions and mobile signals. Through developer-friendly APIs that deliver user verification, digital identity, and omnichannel communications, we help the world's largest brands secure onboarding, maintain account integrity, prevent fraud, and streamline omnichannel engagement.
Founded in 2005 by Darren Berkovitz, Ryan Disraeli, and Stacy Stubblefield, we connect, protect, and defend online experiences with sophisticated digital identity and programmable communications solutions. Through APIs that deliver user verification, data insights, and communications worldwide we solve today’s unique customer challenges by bridging your business to the complex world of telecommunications.
Telesign exists to make the digital world a more trustworthy place for everyone. Through passion and purpose, our team is driven to make that dream a reality. We are focused and compelled by our people-centric mission; this is what sets us apart from other organizations. We are deeply committed to people — from the communities we work in, colleagues we work with, the customers we serve and their consumers who we help connect, protect and defend.
At Telesign, we bring our full, authentic selves to work. We understand the impact we have within the larger organization, which is why we work hard to lift each other up. We are accountable, strategic, respectful, diverse and purposeful. We take ownership, speak with candor, and bring our best — both to our projects and to our teams — in every moment. We make our work enjoyable every day.
The Telesign team creates opportunities. We show up every day with a can-do mentality and lean into curiosity and inclusivity. We avoid complacency and strive to innovate, iterate, and learn from each other’s diverse perspectives. We are proactive and ready to leave our comfort zones in order to grow.
Every Telesign team member counts, and we all count on each other. We perform better with a foundation of trust; therefore, we are open and honest with each other. We strive to work collaboratively and bring out the best in one another. We may be positioned around the world, but we move as one unified team to reach our goals.
of the largest brands in the world trust us.
countries and territories
with coverage.
patents all over the world.
Chief Executive Officer
Joseph Burton is the CEO of Telesign. Before Telesign, he served as CEO of Plantronics (now Poly) from 2016 to 2020, after joining the company in 2011 as Chief Technical Officer and then serving as Chief Commercial Officer. He started his career in 1990 as a software engineer, was acquired into Cisco in 2001 and served as Cisco's CTO for Unified Communications until 2010. Burton specializes in digital transformation, growth acceleration, corporate and go-to-market strategies, and has extensive expertise in technology and product development. He was most recently a Senior Advisor to the management consulting company McKinsey & Company. He holds a Bachelor of Science in Computer Information Systems and completed the Stanford Executive program at Stanford University.
Chief Financial Officer
Thomas Dhondt is the CFO overseeing Telesign’s financial functions. Before joining Telesign, Dhondt spent eight years at Proximus in the corporate and enterprise business units where he specialized in strategy, finance, and M&A. The last two years he served as Director of the corporate M&A department and was responsible for transactions within the telecom, IT, a and software industries. He also led the buyout of Telesign by Proximus. Thomas holds a Master of Science in Business Engineering from Ghent University and a Specialized Master’s in Corporate Finance from ESSEC Business School in Paris.
Chief Marketing Officer
Kristi Melani is the CMO at Telesign. Prior to joining Telesign, she led the global Growth Marketing organization at Anaplan, a leader in SaaS enterprise. Kristi brings with her over 27 years of cross functional marketing experience. In addition to Anaplan, she was Vice President of Marketing at Poly leading a global marketing team across demand generation, messaging, campaign creation, events, ecommerce, web, and digital transformation. Melani holds a Bachelor of Arts in Public Relations from San Jose State University.
Chief Legal Officer
Cynthia Ng leads the Legal and Privacy teams at Telesign. Ng is also the Data Protection Officer at Telesign and is a Certified Information Privacy Professional. Cynthia has more than 20 years’ experience in legal practice in IT. Prior to Telesign, Ng was VP at CA Technologies working first in their Sydney office, then moving to Beijing, and finally relocated to New York to work at their HQ. She has a dual degree in Science and Law from the Australian National University and a Master of Laws from the University of Southern California. She is called to the Bar in California, Australia, and Malaysia.
Senior Vice President, Sales and Customer Success
Aaron Seyler is the SVP of Sales and Customer Success at Telesign. Seyler brings with him 15 years of sales experience in the technology and SaaS industries. Seyler specializes in rapidly growing revenue and developing high performance sales teams. He previously served as Regional Sales Manager at Sumo Logic, Strategic Account Manager at Veritas Technologies, and Enterprise Account Manager at Symantec. Seyler holds a Bachelor of Science in Business Management from Arizona State University.
Vice President, Global Customer Operations
Ben is the Vice President of Business Operations responsible for Telesign’s global Customer Success, Customer Support, and Messaging Operations teams. Before joining Telesign, Ben served as the Head of Customer Success & Support for a portfolio company of Rockbridge Growth Equity, where he was instrumental in developing a customer retention program and growing revenues. Ben holds a Bachelor of Science degree from the University of Chicago.
Chief People Officer
Peter Vermeulen is the CPO at Telesign. He specializes in developing cost-effective, sustainable, and measurable strategies that drive organizational talent success. Before joining Telesign, Vermeulen served as the Global Head of Human Resources & Customer Service for Amazon and has also held leadership roles at Johnson & Johnson and the Linde Group. Peter holds a GPHR certificate from the HRCI, where he formerly served as a member of the Board of Directors. He earned a Master of European Studies from the University of Strasbourg, France, and a Master of Business Economics from the University of Leuven, Belgium.
General Manager, Belgrade
Nenad Vucinic is the GM of the Belgrade, Serbia team at Telesign. From 2012-2017, he grew the Serbian office to more than 160 employees in support of Telesign’s global operations. His background includes leadership roles in both enterprise and startup environments in IT, Telecommunications, and Consumer Goods. He holds a Bachelor of Laws in International Law from the University of Belgrade.
Chief Technology Officer
Tom Wesselman is the CTO and head of product at Telesign. Prior to Telesign, he was VP/GM of the software business unit at Plantronics (now Poly) from 2018 to 2021, after joining the company in 2013 as Director of Software. He spent 11 years at Cisco leading teams in security, identity, unified communications, and the strategic alliance with Microsoft. Wesselman specializes in building and accelerating new businesses, developing high-performance teams, and using lean and agile development to deliver both innovation and growth. He holds a Bachelor of Arts in International Studies from the University of Washington.
