Marianthi Polydorou
Senior Product & Digital Strategy Manager
AI Transformation
Professional Profile
As a proven B2B and B2C Product Leader, I drive digital transformation through innovative solutions and cross-functional leadership. Today, I bring that experience into Generative AI, combining MIT training and Gen AI Global insights to help organizations turn emerging technology into business value and customer delight.
Basel, CH
Worked At
Work Experience
General Member, Volunteer
Gen AI Global
2025 - Present
Remote
Gen AI Global Professional Network is an MIT Professional Education–backed community that unites AI business leaders and technologists, with the mission to democratize cutting edge knowledge, accelerate ethical adoption and cultivate a trusted global talent pool to lead the next wave of AI driven transformation - and my voice is part of that momentum.
General Member, Volunteer
Gen AI Global
2025 - Present
Remote
Gen AI Global Professional Network is an MIT Professional Education–backed community that unites AI business leaders and technologists, with the mission to democratize cutting edge knowledge, accelerate ethical adoption and cultivate a trusted global talent pool to lead the next wave of AI driven transformation - and my voice is part of that momentum.
Senior Digital Transformation Manager
Sunrise GmbH
2022 - 2024
Zurich, CH
Governance & Transformation: At Sunrise B2C, I built an analytics-driven governance framework that brought full visibility into a multi-million CHF digital portfolio. I co-created B2C’s PMO governance and unified roadmap, ensuring OKRs delivered real business results. By streamlining operations, I halved Tribe scaling timelines, cut overspending by 20% and boosted productivity by 10%, turning strategy into execution.
Senior Digital Transformation Manager
Sunrise GmbH
2022 - 2024
Zurich, CH
Governance & Transformation: At Sunrise B2C, I built an analytics-driven governance framework that brought full visibility into a multi-million CHF digital portfolio. I co-created B2C’s PMO governance and unified roadmap, ensuring OKRs delivered real business results. By streamlining operations, I halved Tribe scaling timelines, cut overspending by 20% and boosted productivity by 10%, turning strategy into execution.
Senior Project Manager, B2B
Sunrise GmbH
2021 - 2022
Zurich, CH
SaaS & Managed Services: I planned and launched SaaS and Managed Services, overseeing budgets and resources to maximize ROI. By standardizing PM practices and aligning stakeholders through Steering Committees, I halved delivery timelines. I automated B2B portal troubleshooting, cutting Mean Time to Resolve by 20%.
Senior Project Manager, B2B
Sunrise GmbH
2021 - 2022
Zurich, CH
SaaS & Managed Services: I planned and launched SaaS and Managed Services, overseeing budgets and resources to maximize ROI. By standardizing PM practices and aligning stakeholders through Steering Committees, I halved delivery timelines. I automated B2B portal troubleshooting, cutting Mean Time to Resolve by 20%.
Senior SaaS Product Manager, B2B
Vodafone
2014 - 2018
Athens, GR
ICT Transformation: At Vodafone, I launched the 1st SaaS portfolio that repositioned the company as a full ICT provider. By building a robust partner ecosystem, I cut costs by 70% and accelerated time-to-market by 60%, earning recognition as Best Product Manager. I led cross-functional teams to deliver ICT products, optimized digital self-service platforms and streamlined partner integrations. From roadmap design to UATs and go-to-market strategies, I drove end-to-end product delivery while additionally strengthening Microsoft 365 and Google suite partnerships and sales growth.
Senior SaaS Product Manager, B2B
Vodafone
2014 - 2018
Athens, GR
ICT Transformation: At Vodafone, I launched the 1st SaaS portfolio that repositioned the company as a full ICT provider. By building a robust partner ecosystem, I cut costs by 70% and accelerated time-to-market by 60%, earning recognition as Best Product Manager. I led cross-functional teams to deliver ICT products, optimized digital self-service platforms and streamlined partner integrations. From roadmap design to UATs and go-to-market strategies, I drove end-to-end product delivery while additionally strengthening Microsoft 365 and Google suite partnerships and sales growth.
Cloud Consultant
Freelancer at the Greek National Institute of Science & Technology
2012 - 2014
Athens, GR
Cloud Consulting: As a freelance consultant, I advised on IaaS, PaaS, and High-Performance Computing for EU-funded projects, helping research institutions advance cloud adoption and scalability.
Cloud Consultant
Freelancer
2012 - 2014
Athens, GR
Cloud Consulting: As a freelance consultant, I advised on IaaS, PaaS, and High-Performance Computing for EU-funded projects, helping research institutions advance cloud adoption and scalability.
Cloud Consultant
Freelancer
2012 - 2014
Athens, GR
Cloud Consulting: As a freelance consultant, I advised on IaaS, PaaS, and High-Performance Computing for EU-funded projects, helping research institutions advance cloud adoption and scalability.
Program Manager, Mobile Marketing
Velti
2010 - 2012
Athens, GR
Mobile Marketing PMO Leadership: I managed the PMO function at Velti, delivering 100+ mobile marketing campaigns, websites and apps across industries and verticals. I guided customers in building digital solutions while mentoring and scaling the Project Management team to ensure operational excellence.
Program Manager, Mobile Marketing
Velti
2010 - 2012
Athens, GR
Mobile Marketing PMO Leadership: I managed the PMO function at Velti, delivering 100+ mobile marketing campaigns, websites, and apps across industries and verticals. I guided customers in building digital solutions while mentoring and scaling the Project Management team to ensure operational excellence.
Program Manager, Mobile Marketing
Velti
2010 - 2012
Athens, GR
Mobile Marketing PMO Leadership: I managed the PMO function at Velti, delivering 100+ mobile marketing campaigns, websites and apps across industries and verticals. I guided customers in building digital solutions while mentoring and scaling the Project Management team to ensure operational excellence.
Senior Project & Connectivity Manager, Mobile Marketing
Velti
2008 - 2010
Athens, GR
Revenue Growth: Leading onshore and offshore development and UI/UX teams, I doubled campaign revenues by leveraging proprietary mobile marketing platforms and global connectivity partnerships. I co-created project specs, scope and plans while driving A/B testing, wireframes and budget allocation.
Senior Project & Connectivity Manager, Mobile Marketing
Velti
2008 - 2010
Athens, GR
Revenue Growth: Leading onshore and offshore development and UI/UX teams, I doubled campaign revenues by leveraging proprietary mobile marketing platforms and global connectivity partnerships. I co-created project specs, scope and plans while driving A/B testing, wireframes and budget allocation.
Product Developer & Project Manager, B2B
OTEnet (OTE, T-Group)
2003 - 2008
Athens, GR
B2B Services: I led cross-functional teams to deliver corporate IP and network connectivity services with strong SLAs. By creating product roadmaps, business cases and optimizing BSS/OSS and support processes, I ensured high-quality, scalable B2B solutions.
Product Developer & Project Manager, B2B
OTEnet (OTE, T-Group)
2003 - 2008
Athens, GR
B2B Services: I led cross-functional teams to deliver corporate IP and network connectivity services with strong SLAs. By creating product roadmaps, business cases and optimizing BSS/OSS and support processes, I ensured high-quality, scalable B2B solutions.
Education
University College London, UK
Master of Science degree
Telecommunications
University College London, UK
Master of Science degree
Telecommunications
University of Manchester, UK
Bachelor of Engineering
Computing & Communication Systems Engineering
University of Manchester, UK
Bachelor of Engineering
Computing & Communication Systems Engineering
University of West Attica, GR
Bachelor
Electronics
University of West Attica, GR
Bachelor
Electronics
Licenses & Certifications
Applied Generative AI for Digital Transformation
MIT Professional Education
Issued 2024
Applied Generative AI for Digital Transformation
MIT Professional Education
Issued 2024
Prompt Engineering
Vanderbilt University
Issued 2024
Prompt Engineering
Vanderbilt University
Issued 2024
Professional Scrum Product Owner I (PSPO I)
Scrum.org
Issued 2021
Professional Scrum Product Owner I (PSPO I)
Scrum.org
Issued 2021
Open Water Diver
Scuba Schools International (SSI)
Issued 2025
Open Water Diver
Scuba Schools International (SSI)
Issued 2025
Professional Skills
Product Leadership & Strategy
SaaS Product Management
End-to-End Product Development
Product Lifecycle Management
Digital Strategy
Roadmap Prioritization
Data, AI & Emerging Tech
Data Analytics & KPIs
Data-led Portfolio Steering
Business Technology
Generative AI
Prompt Engineering
Workflow Automation
AI Agents Development
Leadership & Transformation
Cross-Functional Stakeholder Management
Process Design & Optimization
Operational Excellence & Cost Efficiency
Risk Mitigation
Delivery Methodologies & Tools
Agile (Scrum)
Waterfall
Confluence
Jira
Salesforce
Octane
Figma
Framer
Miro
n8n
Qlik
Applied AI Tools
Languages
English
C2 - Bilingual proficiency
German
C1 - Professional working proficiency
French
B1 - Limited working proficiency
Greek
Native proficiency
Honors & Awards
Vodafone B2B Awards
Issued by Vodafone GR
Product Management
Recognized as Best Product Manager for outstanding performance, strategic transformation and leadership.
Vodafone B2B Awards
Issued by Vodafone GR
Product Management
Recognized as Best Product Manager for outstanding performance, strategic transformation and leadership.
Get in touch
I am always open to new opportunities and professional conversations. You can reach me on LinkedIn to stay in touch
