At IONOS, we don't just manage servers – we shape the digital future for more than 6.2 million customers worldwide with our solutions. As Europe's leading hosting provider and a pioneer in independent cloud solutions, we are building next-generation infrastructure – from sovereign cloud architectures and high-performance GPU clusters to integrated AI automation tools.
What drives us is digital sovereignty for Europe and real impact for small and medium-sized businesses (SMBs) as well as large enterprises. We work in agile teams, rely on transparent structures, and believe that excellence and innovation only emerge through true team spirit.
Ready for your next step? Become part of IONOS and grow with us.
As a Cybersecurity Engineer, you will play a crucial role in ensuring the security of our applications and systems. You will be responsible for identifying security risks, conducting security assessments, and developing security solutions to support our operations and development colleagues towards more resilient and robust applications. This role offers the opportunity to work on challenging projects and collaborate with cross-functional teams to implement best practices in cyber and information security.
We value diversity and welcome all applications – regardless of, for example, gender, nationality, ethnic or social origin, religion, disability, age as well as sexual orientation and identity, physical characteristics, marital status or any other irrelevant factor subject to applicable law.

IONOS is Europe’s #1 digital partner for small and medium-sized businesses. More than six million customers across 18 markets rely on us to power their online success — from Europe to North America and worldwide.
We’re the one-stop shop for digital growth: domains, hosting, websites, e-commerce, and online marketing tools — everything SMBs need to start strong and scale fast.
For enterprises, our cloud solutions combine scalability with European data sovereignty, security, and compliance. Built on transparency and trust, our infrastructure helps organizations move to the cloud with confidence.
Our mission: to make the digital world simple, affordable, and sovereign — for businesses of every size.