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United Internet AG Tech Stack

European internet and cloud services conglomerate with 28M+ customers

IT Services and IT Consulting Montabaur 10,001+ employees Founded 1988 Public Company

United Internet AG operates a sprawling portfolio of consumer and enterprise internet brands (1&1, GMX, WEB.DE, IONOS, STRATO) across Europe, serving 28 million customers plus 40 million ad-financed accounts. The tech stack is enterprise-heavy—SAP (R/3, FI, CO, MM, SD, BW), Azure, Kubernetes, Hyper-V—with active migration to SAP S/4HANA and cloud readiness transformation underway. Hiring is skewed toward finance and operations roles (9 of 18), not engineering (1), suggesting post-acquisition integration or cost-control consolidation rather than product velocity.

Tech Stack 31 technologies

Core StackLinux Ansible Kubernetes Terraform Python SAP Active Directory Hyper-V Windows Server Jira SAP MM LDAP Bash Checkmk Microsoft Office SAP R/3 Azure Entra ID Azure Microsoft Defender Microsoft Defender for Endpoint Microsoft Defender for Identity Microsoft Defender for Cloud Apps 5G Coupa Matrix42 SAP FI SAP CO SAP SD SAP BW Excel

AdoptingSAP S/4HANA

What United Internet AG Is Building

◆Challenges

Cloud readiness transformation
Expanding kubernetes infrastructure
Optimizing payment processing
Managing security alerts
Protecting identities in hybrid and cloud environments
Ensuring consistent process and service quality
Monitoring sla compliance
Managing external service providers
Optimizing bank accounting
Period closing processes

▲Active Projects

Kubernetes infrastructure expansion
International rollouts
Cloud readiness transformation
Positioning ionos as a sovereign cloud provider in the political arena
Public-affairs-strategien für 1&1
Organisation externer veranstaltungen
Monitoring politischer entwicklungen
New s/4hana template for sap fi
Implementation of innovative solutions
Cloud public affairs strategy

Hiring Activity

Steady20 roles · 7 in 30d

Department

Finance

5

Ops

4

Public-Affairs

2

Engineering

1

Executive

1

Legal

1

Public

1

Realestate

1

Seniority

Senior

10

Manager

4

Mid

2

Junior

1

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About United Internet AG

United Internet AG is a publicly traded German internet conglomerate founded in 1988, headquartered in Montabaur. The company operates multiple well-known consumer and business brands including 1&1 (broadband, hosting, registrar), GMX (email), WEB.DE (portal), IONOS (cloud and VPS), STRATO (hosting), and 1&1 Versatel (fiber and 5G infrastructure). Globally, 11,000 employees serve the customer base, with 3,800 dedicated to product, engineering, and data center operations. The business model spans domain registration, managed hosting, cloud services, fiber-optic networks, and emerging 5G mobile infrastructure. Current operational priorities include kubernetes infrastructure scaling, cloud service positioning (especially IONOS as a sovereign cloud provider), SAP financial system modernization, and SLA compliance across service delivery.

HeadquartersMontabaur

Company Size10,001+ employees

Founded1988

Hiring MarketsGermany

Frequently Asked Questions

What tech stack does United Internet AG use?

Linux, Kubernetes, Terraform, Python, Bash, SAP (R/3, FI, CO, MM, SD, BW), Azure, Microsoft Defender suite, Active Directory, Hyper-V, Checkmk monitoring, Jira. Currently migrating to SAP S/4HANA.