Konstantinos Kastanis - Email & Phone Number

Deputy CEO at Upstream

Konstantinos Kastanis is based out of Greece and works at Upstream as Deputy CEO.

Konstantinos Kastanis's Contact Information

Konstantinos Kastanis's Work email

k*****@upstre***.network

Valid

Latest update

October 24, 2025

Location

Greece

Konstantinos's current employer

Upstream

Description

Upstream is a leading mobile technology company driving digital acquisitions and sales across every mobile channel available.

Website

upstreamsystems.com

HQ Location

London, Greater london, United kingdom

Number of employees

201-500

Industry

Advertising Services

Latest update

May 1, 2024

Read about Upstream

Frequent questions about Konstantinos Kastanis

What company is Konstantinos Kastanis working for?

Konstantinos Kastanis works for Upstream.

What is Konstantinos Kastanis's function at Upstream?

Konstantinos Kastanis is Deputy CEO at Upstream.

Where is Konstantinos Kastanis based?

Konstantinos Kastanis is based out of Greece.

What is Konstantinos Kastanis's work email address?

Konstantinos Kastanis's professional email address is k*****@upstre***.network

Who are Konstantinos Kastanis's co-workers?

Konstantinos Kastanis's colleagues are Dimitris Maniatis, Bryant Smith, Paul Zimmermann, Marco Veremis, Lambros Sialmas, Stavros Stavrakoudis, George Kalyvas, Predrag Kilibarda, Michalis Ergazakis, George Serfiotis, Tom Prior, George Togkas, Tim Fernback, Nazaret Kazarian, Mohamed KHALEF, Frank Callahan, Angie Knapp, Dragos Nitulescu, Liz Buethner, Vinícius Otranto, Deni Plessa, Tim Satyagraha, Thanassis Koukoutselos, Barbara Sá, Farah Kokobile, Alok Srivastava, Ioannis Magnis, Jenny Anderson, Anna Prifti, Dan Huber, Wayne Wilson, Nikos Drivas, Rodrigo Mello, Sofia Marinou, Jacqueline Mburu.

Konstantinos's co-workers

Dimitris Maniatis

Chief Executive Officer

Co-Founder & Executive Chairman

Lambros Sialmas

Vice President, Operations

Stavros Stavrakoudis

Regional CFO

George Kalyvas

Chief Operating Officer (COO)

Predrag Kilibarda

Networks Manager at the Cloud Platform Engineering Department

Michalis Ergazakis

Cloud Platform Engineering Manager

VP Commercial Operations Africa

Tim Fernback

CFO

Nazaret Kazarian

Software Architect / VP Engineering

Director of Human Resources

Dragos Nitulescu

Business Director (Telecom) | EMEA

Liz Buethner

Director Client Services

Vinícius Otranto

Business Development Director

Deni Plessa

Head of HR

Tim Satyagraha

Regional Sales Director

Thanassis Koukoutselos

Digital Performance Director

Barbara Sá

Account Director

Farah Kokobile

Regional Sales Director

Alok Srivastava

Jt Managing Director

Ioannis Magnis

PMO & IT Operations Director - Africa

Client Service Director

Wayne Wilson

Ad Sales Director (Africa)

Nikos Drivas

Digital Performance Director

Rodrigo Mello

Sales Director LATAM

Sofia Marinou

Head Of Corporate Communications

Jacqueline Mburu

Commercial Sales Director- Country Manager- Kenya

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