Upstream adds depth to international management team

Appoints Kostas Kastanis as Deputy CEO Chrysa Karamanidi becomes Chief Innovation Officer London, 5th March 2020- Leading mobile technology company, Upstream, is ... Continue Reading →

Upstream adds depth to international management team

Appoints Kostas Kastanis as Deputy CEO Chrysa Karamanidi becomes Chief Innovation Officer London, 5th March 2020- Leading mobile technology company, Upstream, is ... Continue Reading →