10/18/2026 updated

GK
100 % available

Senior PMP Certified BSS transformation Project Manager

Athens, Greece
Worldwide
Athens, Greece
Worldwide

Profile attachments

CV GKAVALLIERATOS PlainformatP-08102026.pdf

Project Portfolio ManagementSoftware Project ManagementWorkday Project Manager
I am an experienced IT/Telco Project Manager, with more than 25 years of experience in various
big Telco & IT projects. I am PMP / PMP Agile certified and I have worked in various countries for large Telecom / IT vendors including
IBM, Ericsson, Rakuten/Tech Mahindra, Liberty Global, Vodafone, Wind and others.
My latest assignment was for 1Global Portugal as an Oracle BRM project manager. Prior to that I worked for IBM Greece for the SAP upgrade project for Greek Public Power Corporation, the largest corporation in Greece with the majority of Electricity subscribers. Project included full testing, full reconciliation between old and new system and all related planning for different phases until cutover. Before that I have worked for Tech Mahindra/Rakuten and Ericsson

Experience

Professional experience10+ years
Freelancer since2011

Languages

ChineseBasic knowledgeGermanGoodEnglishFluentFrenchGoodGreekNative speaker

Project history

Project Manager

1Global
BSS transformation to Oracle BRM

Project Manager SAP

IBM
SAP ISU upgrade for Public Power Corporation Greece

Technical lead

Rakuten / Tech Mahindra
5G implementation for Germany (1&1)

Certificates

PMP

PMI

2008


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