CONFERENCE GUIDE
2025 Speakers
Connect to possibility with a dynamic line-up of speakers and panelists
Alberto Carro Melero
Telefónica Global Roaming
Head of Market Intelligence and B2B
Alberto Carro Melero is Head of Market Intelligence and B2B at Telefónica Global Roaming (TGR), where he spearheads TGR’s technological advancements in 5G, eSIM, open gateway, and satellite connectivity. He is passionate about identifying business challenges and developing innovative solutions. Alberto holds a degree in Industrial Engineering from IQS, Barcelona, and an IESE Executive MBA.
Dr. Andreas Mann
VODAFONE BUSINESS
Principal Product Manager
Dr. Andreas Mann is the Principal Product Manager at Vodafone Business, driving strategic growth and innovation within the Group Messaging product portfolio, including Vodafone’s global SMS Gateway, RCS Business Messaging, and authentication solutions. Recently, he has focused on establishing RCS as the premier messaging solution for service providers and enterprises. Dr. Mann’s extensive achievements during his time at Vodafone include developing the Vodafone Identity Hub, a central access point for Identity Services to protect end users from fraud, and growing Vodafone Messaging Hub to a multi-million dollar revenue stream. Additionally, he was instrumental in developing and deploying Vodafone’s IPX portfolio.
Beverly Mberi
ECONET WIRELESS
General Manager - Interconnect & Roaming Services
Beverly joined Econet in 2008 as a Customer Services representative, quickly gaining in-depth knowledge of the company's products and services. She transitioned to Interconnect and Roaming in 2009, where she progressed from analyst to General Manager over 17 years. Under her leadership, Econet achieved significant market share growth: International traffic (+90%), Roaming (+90%), and Local Interconnect (+60%). Beverly's mandate is to ensure the Interconnect & Roaming business remains competitive and a market leader. Through strategic stakeholder relationships and project management, Beverly has successfully minimized fraud, increased traffic, and boosted revenues at both national and international levels.
Charles Bernard
CELLUSYS
Head of Innovation
Charles is an experienced telecom professional who has made a career of helping mobile operators expand their roaming footprints, enhance their customers' roaming experiences, optimize roaming costs, and monetize A2P traffic. In his last project, he built an award-winning IoT MVNO. He's now leading innovation at Cellusys.
Dennis Owusu Manteaw
PPL NET GHANA
Head of International Business
Dennis Owusu Manteaw is the Head of International Business at PPL Net Ghana, bringing 23 years of extensive experience in the telecommunications industry. His expertise spans across Operations Support Systems/Business Support Systems (OSS/BSS), core network management, revenue assurance, technical sales, and commercial responsibilities.
Javier Mingo
Telefónica Spain
Product Manager for Enterprise Messaging
Javier Mingo is a Product Manager for Enterprise Messaging at Telefónica Spain. Whether SMS or RCS, Javier leads the company’s corporate messaging portfolio to enable companies to communicate and engage with their customers or employees. A telecommunications professional at heart, Javier has an extensive background in shaping the mobile ecosystem at both Telefónica and Vodafone. Before becoming the messaging product lead, Javier was the Global Product and Business Development Manager on m2m managed connectivity and fleet management at Telefónica Spain.
Jordi Castellvi
GSMA Industry Services
Product Director for Fraud Prevention
Jordi Castellvi is Product Director for Fraud Prevention at GSMA Industry Services, where he leads global initiatives to reduce telecom fraud and strengthen security for mobile networks and enterprises. He is responsible for GSMA IRSF Prevention, a near real-time fraud intelligence platform that helps to identify and block number ranges linked to fraud and scams. In 2025, he launched GSMA Call Check, a collaborative service designed to help mobile operators tackle caller ID spoofing and other forms of voice fraud. With over 25 years of experience in the telecom industry, Jordi has worked extensively in roaming, clearing, settlement, and fraud management services. He is committed to developing practical, collaborative solutions that improve trust and resilience across the mobile ecosystem.
José Antonio Vivanco Martos
Telefónica
Head of Innovation and Retail Business at Telefonica Global Roaming, BR4BS Working Group chair at GSMA
José Antonio Vivanco Martos is a highly experienced Telecommunications professional, with a Degree in physics (BSc), an MBA from IE Business School, and more than 24 years of experience in the industry.
In 2013, José Antonio began his journey in the Roaming industry as the head of retail roaming business in Latin America within the Telefonica group, leading the development of groundbreaking retail value propositions in the region. In 2015, José Antonio transitioned to the role of Head of Roaming Innovation and Retail Business in Telefonica Global Roaming, where he analysed the impact of new technologies and trends in the Roaming ecosystem, including VoLTE, 5G SA, BCE, Blockchain, IoT, travel eSIM value proposition, amongst others.
In June 2022, José Antonio took on a pivotal role in the development of BCE as the chair of the group responsible for business requirements and as a delegate of the BCE Task Force. His contributions to the development of BCE have been acknowledged by the GSMA and WAS, underscoring his dedication and expertise in the field.
Manish Sharma
RELIANCE JIO
Head of International Roaming and Value-Added Services
Manish Sharma is an accomplished telecommunications professional with over 17 years of experience in the industry. He currently serves as the Head of International Roaming and Value Added Services at Reliance Jio India, overseeing key areas in international roaming, value-added services, and customer solutions. Manish holds a Bachelor's degree in Computer Science Engineering and has developed a wealth of expertise in cutting-edge technologies, including 5G, 4G, IMS (IP Multimedia Subsystem), IoT (Internet of Things), and Security. He is particularly known for his ability to drive innovative solutions and his strategic insights into the telecom sector. Outside of work, Manish is passionate about exploring emerging technologies and staying updated on the latest trends in telecommunications and security.
Shahbaz Ali
SATELIOT
VP of Products and Standards
Shahbaz Ali serves as the VP of Products and Standards at Sateliot, where he leads the development of the 3GPP Standardized NB-IoT LEO Satellite Connectivity Product. He is also a Steering Board Member of the GSMA NTN Community, Vice Chair of the GSOA Standards Group. He represents his company as a delegate to GSMA, GCF, ESA, and GSOA across various working groups. In his previous role as Head of IoT & M2M at Telenor, he played a key role in driving exponential revenue growth, establishing a strong foundation for sustained success. Shahbaz’s diverse experience in the telecommunications, satellite, and IoT industry spans almost two decades, with time at Siemens and Nokia. He is dedicated in building a comprehensive ecosystem through strategic partnerships and is a strong advocate for an integrated approach.
Shauna Sheridan
Cellusys
Software Engineer
Shauna Sheridan is a Software Engineer at Cellusys, where she is part of the core development team delivering key features for the company’s Steering of Roaming platform. Her work focuses on building scalable, high-performance systems that help mobile operators optimise roaming traffic. Shauna has also represented Cellusys at industry events, showcasing innovative solutions for roaming quality and operations.
Rami Hinawi
Jawwal PALESTINE
Director of International Wholesale & Carrier Relations
Rami Hinawi is the Director of International Wholesale & Carrier Relations at Jawwal, where he is recognized for his strategic leadership and deep expertise in global telecom partnerships. His strong commercial acumen and technical expertise have enabled him to craft innovative, high-value deals that have enhanced customer satisfaction and elevated roaming business performance. His collaborative approach and results-driven mindset have helped redefine wholesale and retail strategies, unlocking new value deals and maximizing business performance for both partners while improving customer experience, particularly in his work with Jawwal. He holds an MBA from Birzeit University and a Bachelor's degree in Telecom Engineering from the University of Jordan.
