Jannis Gartner
Client Success Director (Hyperscale) at NTT Global Data Centers | Cologne Bonn Region
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Jannis Gartner currently serves as the Client Success Director (Hyperscale) at NTT Global Data Centers, where he leverages over two decades of extensive experience in the data center industry to drive strategic client engagement and operational excellence. In this role, Jannis is responsible for leading a high-performing team of Client Success Managers, Principal Client Success Managers, and Country Leads across the EMEA region. His primary focus is on supporting hyperscale cloud providers, public sector organizations, and global enterprises through their entire lifecycle— from onboarding and integration to ongoing optimization and renewal.
Jannis’s expertise in managing multi-site facilities with power capacities exceeding 200 MW allows him to deliver tailored solutions that align with clients’ digital transformation strategies and ensure compliance with industry standards such as ISO 27001. His deep understanding of carrier networks, interdisziplinäre Zusammenarbeit (interdisciplinary collaboration), and the complexities of hyperscaler environments enables him to foster long-term client relationships built on trust, transparency, and measurable results.
Key projects under his leadership often involve complex digital transformation initiatives, where he orchestrates cross-functional teams to optimize data center operations, enhance security protocols, and improve energy efficiency— all while maintaining a focus on budget, forecast accuracy, and customer satisfaction. Jannis’s strategic approach emphasizes a consistent client journey, ensuring that high-volume clients receive a seamless experience that supports their growth ambitions and operational resilience. His proven ability to manage large-scale, high-stakes projects positions him as a trusted partner in navigating the evolving landscape of hyperscale data centers and digital infrastructure.
Client Success Director (Hyperscale) at NTT Global Data Centers in April 2024 to Present
Manager Client Success Management at NTT Global Data Centers in August 2022 to April 2024
Principal Client Success Manager at NTT Global Data Centers in April 2021 to August 2022
Customer Manager at e-shelter services GmbH in October 2017 to March 2021
Senior Servicemanager [& Deputy Head of Customer Care] Housing at ITENOS in June 2014 to September 2017
Servicemanager Housing at ITENOS in April 2012 to May 2014
Strategic Procurement Manager Housing at ITENOS in March 2011 to March 2012
Category Procurement Manager Housing/Hosting at ITENOS in November 2008 to February 2011
Order and Process Manager Connectivity/Hosting/ICT at ITENOS in January 2008 to October 2008
Associate Retail Sales ; Management Assistant in IT-Systems at Deutsche Telekom in September 2002 to December 2007
Company Owner at Digital Document in January 2001 to December 2002
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IHK Bonn/Rhein-Sieg, November 2026
IHK Aachen, November 2026
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Neue Technologien
Kommunikation
Leadership
Strategie
Kennzahlen
Fehler-Ursachen-Analyse
Vereinbarungen zum Servicelevel (SLA)
Projektmanagement
Beschwerdemanagement
Kunden-Eskalationsmanagement
Rechenzentren
Kundenzufriedenheit
Customer Relationship Management (CRM)
Managed Services
Business Continuity
ISO 27001
Telekommunikation
Programm-Management
Öffentlicher Sektor
Data Center
Onboarding
Customer Service Management
Teamführung
Management
Problemlösung
Interdisziplinäre Zusammenarbeit
Colocation
Audit-Management
ISO 20000
ITIL-Prozessimplementierung
Verantwortung für Budget, Forecast von Umsatz und Kundenergebnis
IT-Systemverantwortung
Connectivity Services
Carrier und Netzwerke
Prozessverantwortung
Hyperscaler
Onboarding-Prozesse
Verlagerung Rechenzentren
Rechenzentrumsbetrieb
Digitale Transformation
Microsoft Outlook
Microsoft Azure
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Discover more about NTT Global Data CentersWhat is Jannis Gartner email address?
Email Jannis Gartner at [email protected]. This email is the most updated Jannis Gartner's email found in 2026.
How to contact Jannis Gartner?
To contact Jannis Gartner send an email to [email protected]. (updated on June 25, 2025)
What company does Jannis Gartner work for?
Jannis Gartner works for NTT Global Data Centers
What is Jannis Gartner's role at NTT Global Data Centers?
Jannis Gartner is Client Success Director (Hyperscale)
What is Jannis Gartner's Phone Number?
Jannis Gartner's phone (**) *** *** 352
What industry does Jannis Gartner work in?
Jannis Gartner works in the Telecommunications industry.
Jannis Gartner Email Addresses
Jannis Gartner Phone Numbers
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