Guy Krief

Upstream Telecommunications & Software Systems SA operates a commerce platform that engages in the provision of mobile marketing services for mobile operators, M-commerce, developers, service providers, and publishers. It offers insights, and mobile solutions. The firm also offers direct marketing and mobile customer billing services. The company was founded by Alex Vratskides and Marco Veremis in 2001 and is headquartered in Gerakas, Greece.

Idalto Ltd. develops talent assessment platform services. It offers solutions such as bias-free hiring, science, cognitive skills, personality traits assessment, and leadership potential. The company was founded by Markellos Diorinos, Guy Krief and Hassan Chahrour and is headquartered in Nicosia, Greece.

Wanadoo SA provided internet services and related activities. The firm has offices in the United Kingdom, Belgium, the Netherlands, Spain and Morocco. The company was founded in 1996 and is headquartered in Issy-Les-Moulineaux, France.

Upstream Telecommunications & Software Systems SA operates a commerce platform that engages in the provision of mobile marketing services for mobile operators, M-commerce, developers, service providers, and publishers. It offers insights, and mobile solutions. The firm also offers direct marketing and mobile customer billing services. The company was founded by Alex Vratskides and Marco Veremis in 2001 and is headquartered in Gerakas, Greece.

Persado, Inc. provides digital marketing software services. It provides marketing software through a managed SaaS platform to enterprise and Internet consumer marketers in the telecom, financial services, retail, and gaming sectors. The firm develops and sells marketing persuasion technology, which uses data and software to determine the most effective marketing messages for multi-channel digital marketing strategies. The company was founded by Alex Vratskides, Assaf Baciu and Guy Krief in December 2012 and is headquartered in New York.