TessaB Corp. brings together seasoned telecom executives, eCommerce, technology and marketing experts to execute our collective vision to create a better mobile device ownership experience for consumers.

Guy Kuperman

Guy Kuperman

Chairman of the Board

Guy Kuperman is a prolific executive, advisor and business owner, with a successful track record of increasing corporate value of companies across multiple …

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Ben Nash

Ben Nash

Founder and Board Member

Ben has been the CEO of PCS Wireless since 2003, building it into a powerhouse in reverse logistics for the mobile device and equipment industry.

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Flavio Mansi

Flavio Mansi

CEO and Board Member

Since the end of 2017 Flavio has been leading a group of highly talented individuals who are developing the TessaB blockchain ecosystem.

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Rafael Ilishayev

Rafael Ilishayev

Board Member

Rafael Ilishayev is a first-generation immigrant who grew up with an entrepreneurial family in the New York metro area.Rafael met Yakir Gola in their first Business 101…

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Andrew Kahn

Andrew Kahn

Board Member

Andy is Chairman Emeritus of Kahn Lucas Lancaster, Inc., one of several positions he has held since 1965. He received his bachelors’ degree in Economics…

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Ishai Reinfeld

Ishai Reinfeld

Chief Operating Officer

Ishai is a leading young executive driving the next generation of eCommerce. A Forbes 30 under 30 nominee, he has over ten years experience operating …

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Andrew Weisselberg

Andrew Weisselberg

Head of Marketing and Customer Experience

Andrew Weisselberg is a seasoned marketing executive who has spent 20 years building successful …

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Tanuj Nigam

Tanuj Nigam

Head of Technology

Tanuj Nigam recently joined TessaB as the Head of Technology and brings with him a deep understanding of blockchain …

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Stefan Krasowski

Stefan Krasowski

VP TessaB Protect

Stefan Krasowski is a seasoned insurance executive who has spent 15 years in retail and insurance. He has established and managed …

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Eugene Baron

Eugene Baron

Head of Product

Eugene joined TessaB to bring Glyde P2P marketplace product to a new level. A proven leader in product management …

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Jacob Katsof

Jacob Katsof

Business Development

Jacob Katsof is an experienced business development executive with a love for solving problems in the telecom industry.

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Jesus Sardinero

Jesus Sardinero

Business Development

Jesus is a multinational strategic, multilingual Spanish, Portuguese and English executive with over 30 years of international business …

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Guy Kuperman

Chairman of the Board 

Guy Kuperman is a prolific executive, advisor and business owner, with a successful track record of increasing corporate value of companies across multiple sectors, predominantly in technology. Over the last 15 years, Guy has been supporting leading public and private enterprises, as well as private and institutional investors, with optimizing their strategic investments as a director, executive, and advisor.

Ben Nash

Founder and Board Member

Ben has been the CEO of PCS Wireless since 2003, building it into a powerhouse in reverse logistics for the mobile device and equipment industry. He began his career in wireless distribution in Manhattan. Ben has led the charge in growing PCS from a local business into a prominent operation with a global presence. Ben conceptualized the idea for TessaB ecosystem in 2017 and is committed to driving its long-term successes.

Flavio Mansi

CEO and Board Member

Since the end of 2017 Flavio has been leading a group of highly talented individuals who are developing the TessaB blockchain ecosystem. He has gained distinct insight and experience in the technology industry sphere, having spent 16 years at Qualcomm with roles that included Senior Vice President and President of Qualcomm Latin America. More recently, Flavio joined PCS Wireless as Chief Commercial Officer in 2014 and has held several roles within the PCS group of companies. Flavio is passionate about the great opportunity TessaB has to revolutionize the way people buy and sell mobile devices and related services, while introducing cryptocurrency to a mass consumer audience.

Rafael Ilishayev

Board Member - Co-Founder & Co-CEO of goPuff

Rafael Ilishayev is a first-generation immigrant who grew up with an entrepreneurial family in the New York metro area. Rafael met Yakir Gola in their first Business 101 class at Drexel University and the two went on to start goPuff out of their college dorm room the following year. Together, they’ve grown goPuff into an instant needs category creator and one of the fastest growing tech companies with more than 3,000 employees across the country. Today, goPuff has operations in more than 500 U.S. cities, leveraging its network of over 200 micro-fulfillment centers to fulfill orders of thousands of everyday essentials to customers in 30 minutes. Under Rafael’s leadership, every goPuff initiative - big or small - is developed with a customer-first mentality. Rafael, along with Yakir, was named to Forbes’ 30 Under 30 list in the Retail & Ecommerce category in 2017, in 2019 received the Drexel University Founders Award and in 2020, goPuff was named to CNBC’s Disruptor 50. Rafael is closely involved with his alma mater, Drexel University, through the Charles D. Close School of Entrepreneurship and Chabad Serving Drexel University.

Andrew Kahn

Board Member

Andy is Chairman Emeritus of Kahn Lucas Lancaster, Inc., one of several positions he has held since 1965. He received his bachelors’ degree in Economics from the Wharton School of Finance at the University of Pennsylvania. Andy is on the board of advisors for PCS Wireless and board of directors for TessaB.

Andy has a heart for philanthropy and gives of his time to several boards. He is a director of The Kahn Foundation, sits on the board of directors of the Admirals Cove Foundation. He sits on the advisory board of Abramson Cancer Center Hospital at the University of Pennsylvania. He is co-founder of Kids in Distressed Situations. Andy is active as trustee on numerous estates and trusts and moderates’ forums for YPO and CEO.

Andy and his wife Peggy have three children and five grandchildren.

Ishai Reinfeld

Chief Operating Officer

Ishai is a leading young executive driving the next generation of eCommerce. A Forbes 30 under 30 nominee, he has over ten years experience operating and leading online businesses, leveraging his extensive background in management, process innovation and competitive intelligence. Ishai’s work has directly impacted both small businesses and Fortune-500 companies, locally and abroad. His relentless drive and passion is matched only by his love for sushi.

Andrew Weisselberg

Director of Marketing and Customer Experience

Andrew Weisselberg is a seasoned marketing executive who has spent 20 years building successful integrated marketing programs, brand strategies and customer experiences. His previous experience includes management roles at large marketing services firms including Ogilvy & Mather and McCann-Erickson in New York. During this time Andrew worked on an extensive portfolio of brands including Verizon, Citizens Bank, Coca-Cola, Sprint, T-Mobile, BP, 7-Eleven, and Jägermeister. Andrew joined the TessaB team in the fall of 2018.

Tanuj Nigam

Head of Technology

Tanuj Nigam recently joined TessaB as the Head of Technology and brings with him a deep understanding of blockchain and DLT space. He had worked with multiple blockchain protocols and has designed and advised a lot of ICOs and STOs startups’ to take their products to live. His long stint at Bank of America got him into blockchain and few other bleeding-edge paradigms to improve efficiency by creating decentralized and transparent workflows. He has extensive experience with diverse technologies by virtue of working with enterprise and startup companies for 20 years on putting together large scale, high availability, and interoperable solutions.

Stefan Krasowski

VP TessaB Protect

Stefan Krasowski is a seasoned insurance executive who has spent 15 years in retail and insurance. He has established and managed insurance and device protection programs in over 60 countries. Stefan spent 8 years in China and is fluent in Mandarin. He is a graduate of The Wharton School, University of Pennsylvania. His previous experience includes international business development roles at AIG and Assurant. Stefan joined the TessaB team in the spring of 2018.

Eugene Baron

Head of Product

Eugene joined TessaB to bring Glyde P2P marketplace product to a new level. A proven leader in product management, Eugene brings professional experience from telecom & technology leaders such as Nokia and Oracle, as well as from several innovative startups.

Jacob Katsof

Business Development

Jacob Katsof is an experienced business development executive with a love for solving problems in the telecom industry. He has held roles as Entrepreneur In Resident at IDT Corporation, Director of Mobile Apps at PCS Wireless, and co-founded a telecom purposed CRM platform. Jacob is passionate about emerging technologies, product development and building relationships. He attributes his success to listening carefully to customers, identifying pain points and opportunities, and designing innovative solutions.

Jesus Sardinero

Business Development

Jesus is a multinational strategic, multilingual Spanish, Portuguese and English executive with over 30 years of international business experience in technology and teleco throughout Europe, the Americas and Asia. Excellent relationship at C level MNO, MVNO, OEM, and ODM. His previous experience includes management roles in PCS Wireless Latin America, co-Founder of Celistics, Telefonica in both Latin America and Europe and Motorola Europe. As a result of his experience, Jesus understands the opportunities and challenges OEMs, Carriers and Distributor face when they produce, sell, market, distribute and service smartphones.