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Senior Cyber Security Engineer (f/m/d) Cloud

IONOS SE
IT Security
Berlin
Full-time
I-1615

About IONOS SE

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.

To the company page
United Internet Office Building

Tasks

For us, security isn't an afterthought or a checkbox exercise – it's built right into our DNA. We integrate security exactly where it matters most: into our architectures, pipelines, and operational concepts. Compliance evidence is generated naturally from our day-to-day operations, not from stressful last-minute audit prep. We are looking for someone who can translate security requirements into resilient technical concepts and actively verify their effectiveness.

  • Drive the evolution of our Secure SDLC side-by-side with our dev teams.
  • Lead Threat Modeling and architecture reviews – catching risks early in the design phase, not right before a release.
  • Design robust IAM concepts (role models, permission logic, recertification) and define clear cryptographic standards and baselines.
  • Take charge of vulnerability and pentest management: scanning, CVSS scoring, prioritizing, and tracking remediations.
  • Specify requirements for logging, monitoring, and error handling, and review their implementation across the board.
  • Design and evaluate technical Business Continuity (BC) and disaster recovery tests.
  • Automate compliance and evidence collection directly within the teams' CI/CD pipelines.

Qualifications

  • Well-founded, multi-year practitioner’s experience with standardised management systems and certifications, attestations in the cyber security area.
  • You have practical experience from two or more certified scopes according to ISO 27001, IT-Grundschutz, BSI C5. More ISO management system experience from privacy standards comes as a plus.
  • You have multi-year experience with above standards and certifications in a technical organisation, as in the company offers technical products.
  • You are burning for modern tool supported, efficient integration of management systems and certification activities into the daily routine of an organisation.
  • You love technology, you do not shy away from documentation but would like to structure it as efficiently as possible.
  • You convince through your confident and communicative character when achieving goal oriented results with your international and internal interfaces.
  • You proficiently lead discussions in English (CEFR C1 or higher). Completely fluent German (C1 CEFR level is a must).

Nice to Have

  • Deep conceptual knowledge of IAM (Role/Permission models, SSO, Federation, PAM, recertification logic).
  • Practical experience with applied cryptography (TLS, PKI, Key Management, HSM).
  • Familiarity with major frameworks (ISO/IEC 27001 Annex A, BSI IT-Grundschutz, OWASP ASVS & Top 10, CIS Benchmarks, NIST CSF).
  • Experience with Policy as Code and Continuous Compliance.
  • An understanding of audit logic and how to collaborate smoothly with external auditors.

Benefits that make a difference

As an employer, United Internet offers interesting roles with exciting projects, personalized development opportunities and excellent career prospects.

Culture

Our working environment is characterized by flat hierarchies and short decision-making processes. We encourage a positive approach to learning from mistakes and open feedback!

Mobility

To support sustainable and flexible mobility, we provide our employees with attractive benefits packages. For example, through JobRad, you can lease your ideal bike on attractive terms. We also provide a financial subsidy for this offer. Alternatively, you can use public transport and benefit from a subsidy towards the Deutschlandticket.

Events

We celebrate our successes as a team: at United Internet, we throw legendary parties. And our varied workshops and team events foster a special sense of camaraderie.

Flexible Working

Many of our roles allow for remote working from home and flexible working hours.

Pension and health

Our employees benefit from attractive pension schemes. These include modern financial security options that support wealth accumulation. Our health and fitness programmes, covering topics such as ergonomics, exercise and nutrition, round off the package. The aim is to provide a working environment in which all colleagues can not only develop professionally but are also well-positioned for their personal future. 

Discounts

Our employees benefit from a wide range of discounts on our Group’s products and services, for example in the form of discounted broadband and mobile phone contracts. In addition, we offer exclusive price advantages for selected leisure and partner offers.

A wide range of training opportunities

Strengths are individual – and that is a good thing! Our wide range of development programmes offers excellent opportunities for personal and professional growth. From e-learnings to trainings, conferences and mentoring – we learn from, for and with one another to grow together.

Technology

To provide our employees with a productive and comfortable working environment, we rely on state-of-the-art technology. This includes high-performance hardware, ergonomic accessories and the latest software tools for efficient collaboration.

Our benefits in detail

  • Hybrid working model with home office option.
  • Flexible working hours through trust-based working hours.
  • At some locations a subsidized canteen and various free drinks.
  • Modern office space with very good transport connections.
  • Various employee discounts for activities and products.
  • Employee events such as summer and winter parties, as well as workshops.
  • Numerous training and development opportunities.
  • Various health offers, such as sports and health courses.

Join our team

United Internet offers diverse opportunities for people who want to help shape the digital future. Those who want to contribute their strengths and grow in an innovative environment will find the right place with us.

apply online now

Two colleagues in the office
WORK UNITED.
 

Diversity enriches. Different cultures, nationalities, genders, ages, sexual orientations and religions as well as people with disabilities - we value diversity and encourage it. Because only teams that reflect all facets of society offer the best environment for creativity and make a company productive and distinctive. We value diversity and welcome all applications.

Contact

Questions?

IONOS SE
Recruiting Team IONOS

Hinterm Hauptbahnhof 3-5
D-76137 Karlsruhe
jobs@ionos.com

Please submit your application exclusively through our easy-to-use online application form. This allows us to ensure a transparent application process while maintaining full compliance with all applicable data protection regulations. Unfortunately, we are unable to accept applications submitted via email for the reasons outlined above.