5G VENTURES S.A - Key Persons


Akis Markatos

Job Titles:
  • Executive
  • Member of the Board of Directors

Alex Papaspyridis

Job Titles:
  • Member of the Advisory Board

Alexandros Papaspyridis

Job Titles:
  • Industry Director for the Asia Pacific Japan
Alexandros Papaspyridis is Industry Director for the Asia Pacific Japan timezone in Microsoft, which spans Asia Pacific, Australia, Greater China Region, India and Japan. Prior to Microsoft he has worked in Information Technology and telecom companies and has founded two startups. He is a member of the Advisory Boards at EcoCommons Australia; at the Centre on AI Technology for Humankind at the National University of Singapore Business School; and at the Depths of Computing and Electrical Engineering Imperial College. He holds a PhD in Electronics Engineering, a Master's in Management and a Bachelor's in Electrical Engineering from Imperial College, London. He also holds the Microsoft Professional Program certificate in Artificial Intelligence.

Antonis Tzortzakakis - CEO

Job Titles:
  • Chief Executive Officer
  • Executive

Bill Karnazes

Job Titles:
  • Member of the Viohalco 's Executive Committee
Bill Karnazes is Member of the Viohalco's Executive Committee and Group's Chief Corporate Services Officer. He is responsible for the Group's operational areas of International Business Development, Communication, Sustainability, Non-ferrous Metal Purchasing, Resource Recovery and Central Procurement, Supply Chain & Logistics, Operational Excellence, IT, and HR.

Constantinos Polychronopoulos

Job Titles:
  • Member of the Advisory Board
  • VP of Technology
Constantinos Polychronopoulos is VP of Technology, 5G & Telco Cloud, at Juniper Networks responsible for 5G products and strategy. Prior to Juniper, he has been VP and CTO of Telco & Edge Computing at VMware, leading the development of VMware's product and technology strategy in 4G & 5G markets and VP & CTO of Cloud Networking at Citrix, following the acquisition of Bytemobile. As Founder of Bytemobile he led the development of innovative products for web, streaming video and transport protocol optimization for 3G and 4G/LTE that were deployed in more than 160 network operators worldwide. He also established the Bytemobile European Development Center in Patra, Greece, employing over 100 software developers. He has published more than 160 research papers, chaired numerous international conferences, and has more than 35 issued and pending patents. He was a professor of Computer Engineering at the University of Illinois for more than 20 years, while in the year 1998 he received the Bodosakis Award.

Costas Meimetis

Job Titles:
  • Member of the Non - Executive
  • Independent Non - Executive Member of the Board of Directors

Diana Markaki

Job Titles:
  • Member of the Non - Executive
  • Independent Non - Executive Member of the Board of Directors

Fotis Karonis

Job Titles:
  • Capgemini Executive Vice President
Fotis Karonis is Capgemini Executive Vice President, Group leader 5G and Edge Computing. As the 5G global leader of Capgemini, Fotis works with Industry Verticals and Communications Service Providers, for their digital transformation journey. Fotis has been BT group CTIO for Enterprise & Managing Director of Mobile & IT driving the delivery of the 5G UK program in 2019. As CTIO of EE, he led EE the UK's largest Mobile operator to be the first to launch 4G in the UK in 2012. Fotis was awarded Mobile Europe CTO of the Year 2015.

George Polychronopoulos - Chairman

Job Titles:
  • Chairman of the Board of Directors
  • Member of the Non - Executive
  • Department: Chairman of the Board of Directors
He was born in 1963. Earned a BS in Electrical Engineering and Computer Science from Princeton University, a MS and PhD in Operations Research from M.I.T. Has an extensive career in financial services having worked in investment banking in London, starting his career at Salomon Brothers Intl, then Deutsche Bank AG and most recently at J.P. Morgan, as a Managing Director, CIO EMEA. He has also extensive and successful experience in the alternative investment management business as a Partner and Investment Manager at Endeavour Capital LLP, a $3bn Fixed Income Relative Value Hedge Fund, at Element Capital Partners, a $18bn Global Macro Hedge Fund, and currently at Capula Investment Management, a $20bn Hedge fund specialising in Fixed Income Relative Value and Volatility Strategies. He is also a member of the M.I.T. Cooperation Development Committee, the Princeton Alumni Schools Committee (UK), and was a Principal and Co-Founder of the Hellenic Hope charity.

Ioannis Katsavounidis

Job Titles:
  • Research Scientist at Facebook 's Video Infrastructure
Ioannis Katsavounidis is currently Research Scientist at Facebook's Video Infrastructure team. He worked with Netflix as a Senior Research Scientist in 2015-2018. He is a co-inventor of VMAF, Netflix's video quality metric, and the inventor of Dynamic Optimizer, Netflix's per-shot perceptual optimization framework, both of which have been awarded a technical Emmy in 2021. From 2008 to 2015 he was an associate professor of Electrical and Computer Engineering at the University of Thessaly in Volos, Greece.

Michael Tzannes

Job Titles:
  • Investor
  • Member of the Advisory Board

Nikos Karapanagou

Job Titles:
  • Executive
  • Member of the Board of Directors

Salvator Levis

Job Titles:
  • Executive
  • Member of the Board of Directors