1&1 | Germany | 56xxx, 76xxx, 60xxx, 65xxx Karlsruhe, Frankfurt, Montabaur | Permanent position | Full time / Home office | Published since: 27.04.2026 on stepstone.de
AI Security Engineer (m/f/d)
1&1 is one of the leading telecommunications providers in Germany with over 3,100 employees and nearly 16 million customer contracts. With pioneering spirit, unusual ideas and creative teams, we have won a leading market position in mobile and broadband connections. By combining the over 67,000 km long 1&1 fiber optic network and regional networks, we create Germany's most extensive fiber optic network. We also build the most modern 5G network in Europe, based on the new Open-RAN technology. With open interfaces and 5G functions in a powerful cloud infrastructure. Continue the 1&1 success story by designing the future through the deployment and development of innovative technologies. Be part of 1&1. .
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Your tasks • Your profile • What we offer
In this key role, you take responsibility for security and privacy of modern ML and GenAI solutions and set the guidelines for a secure scaling of AI in the company. Implementation of LLM-specific Threat Modeling and comprehensive risk analyses along the entire AI lifecycle Definition, implementation and development of Guardrails and Security Controls for productive AI systems Planning and implementation of Red Teaming activities and security reviews before Go-Live Ensuring IT security, data protection and resilience for AI/GenAI applications Close cooperation with AI Governance, IT security, data protection and engineering teams Establishment and establishment of safety standards for the use of AI in the company Support in the integration of security-by-design principles in development and operational processes Advising stakeholders at management and project level on AI security issues
Successfully completed studies, e.g. in computer science, IT security, cyber security or a comparable degree programme Long-standing experience in IT security Knowledge of modern security standards and frameworks, especially OWASP (including LLM Top 10) Extensive experience in Threat Modeling and Security Assessments Representative stakeholder management and communication skills Experience in defining and implementing security controls in complex IT landscapes Knowledge of regulatory requirements (e.g. in the context of the AI Act) Experience with Secure-by-Design programs as well as in the development and implementation of AI legacy programs
- Attractive salary
- Strong community of team players
- Working hours of confidence with flexible classification and the possibility of working up to 40% mobile
- Numerous training options on- and offline
- Discounts on 1&1 products and for various leisure activities
- In-house restaurant
- Free drinks and fresh fruit
- Jobrad grant
Location
 | 1&1 | |
| Karlsruhe, Frankfurt, Montabaur | ||
| Germany |
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