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 – Co-Founder & Co-CEO of goPuff

Rafael Ilishayev is the co-founder of goPuff, a go-to solution for immediate everyday needs. Rafael is a first-generation immigrant …

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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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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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Jennifer Nakos

Jennifer Nakos

General Manager, TessaB Protect

Jen is thrilled to be leading the team that will develop the strategy and achieve successful sales and execution of TessaB Protect …

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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 the co-founder of goPuff, a go-to solution for immediate everyday needs. Rafael is a first-generation immigrant who grew up with an entrepreneurial family in the New York metro area. In his first year at Drexel University in Philadelphia, Rafael met fellow co-founder, Yakir Gola, in their Business 101 class. The pair went on to start goPuff out of their college dorm room a year later.

Today, goPuff operates 200+ micro-fulfillment centers nationwide, bringing customers everyday essentials from cleaning supplies, home needs and OTC medication to food and drinks in minutes right to their door. Through its vertically integrated model, goPuff delivers the moments that matter the most to its customers.
Among Rafael’s accomplishments, he was named to Forbes’ “30 Under 30” list in the “Retail & Ecommerce” category in 2017. In 2019, he received the Drexel University Founders Award and was recognized by Valley Youth House as an Emerging Leader. In 2020, goPuff was named to CNBC’s Disruptor 50 list. In addition to serving as a TessaB board member, Rafael is still closely involved with his alma mater, 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.

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.

Jennifer Nakos

General Manager, TessaB Protect

Jen is thrilled to be leading the team that will develop the strategy and achieve successful sales and execution of TessaB Protect used phones protection plans product. With over 20 years of wireless industry experience, her most recent role was with Motorola. She managed the National Indirect Verizon strategy and was responsible for all Verizon Dealers and Distributors. Prior to that, Jen was at Apple for ten years in several different capacities. She led the charge and was instrumental in growing revenues for Apple Accessories, Beats and Apple Care from 2017-2019. In her ten years at Apple, she gained tremendous insight into facilitating a great customer experience through sales enablement, merchandising and creating incentives and programs for both clients and consumers. Included in her previous experience, she has worked for, Sony Ericsson, Samsung and LG Electronics. Jen resides in Fair Haven, New Jersey with her husband John, her two children and her dog. In her spare time she enjoys spending time at the beach and watching her kids surf. She has passion for cooking and is a dedicated Philadelphia Eagles football fan.

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.