Security Engineer II (AI)

Company Description

Job Description

At SIXT, AI is changing how work gets done and we are looking for the person who will help us do it safely. As an AI Security Engineer, you will shape how SIXT understands, assesses, and secures AI usage across the organisation, exploring where AI touches our data and systems, defining what safe usage looks like, and building the detections and controls that keep AI behaviour secure. This is a builder's role at the frontier of a fast-moving field handson, high-ownership, and directly influential in making responsible AI adoption real at a global scale. If you are excited about defining what secure AI looks like inside a world-class organisation, apply now and become part of Team Orange.

YOUR ROLE AT SIXT

• You assess AI tooling and AI-built applications across SIXT, identify and derive associated security risks, and present clear, actionable findings to relevant stakeholders for informed decision-making
• You author remediation policies that keep AI usage inside agreed boundaries, automating enforcement so it does not depend on manual review
• You partner with teams and business units building their own AI-powered tools, steering them toward more secure approaches and making risk-based decisions on what AI usage is acceptable
• You define the baseline of healthy, productive AI usage that SIXT should actively encourage, and track progress through clear KPIs that show how risk is being reduced over time
• You respond to AI-related security incidents, containing issues quickly and decisively, and work continuously with security and engineering teams to improve and automate AI governance controls
• You partner with Security, Legal, and Data Protection colleagues to keep AI usage aligned with the EU AI Act, GDPR, and other evolving regulatory obligations

YOUR SKILLS MATTER

• Education & Experience You have Bachelor's or Master's degree in Computer Science or a related discipline, with 3–5 years of experience in security engineering
• Security Assessment You run pragmatic security assessments, translate risk patterns into reliable rules including deterministic detections, remediation policies, regular expressions and propose safer alternatives constructively without becoming a blocker
• AI Security Knowledge You bring real knowledge of AI-specific threats such as prompt injection, indirect prompt injection, and agentic and tool-use risks, alongside a solid understanding of modern AI architectures including LLMs, RAG systems, and tool-use workflows
• Risk Methodology You have practical experience applying a structured security risk-assessment methodology such as CVSS or equivalent to score, document, and communicate risk consistently
• Communication You possess strong written communication skills and can make findings and decisions clear enough that colleagues can act on them with confidence, including comfort with making decisions under ambiguity and knowing when to escalate
• Collaboration: You enjoy working across time zones with global teams, and bring familiarity with observability platforms to gain visibility into system and AI behaviour

Qualifications

Additional Information

About us:

We are a globally leading mobility service provider with a revenue of €4.00 billion and around 9,000 employees worldwide. Our mobility platform ONE combines our products SIXT rent (car rental), SIXT share (car sharing), SIXT ride (taxi, ride, and chauffeur services), and SIXT+ (car subscription), giving our customers access to our fleet of 350,000 vehicles, the services of 4,000 cooperation partners, and around 5 million drivers worldwide. Together with our franchise partners, we are present in more than 110 countries at 2,000 rental stations. At SIXT, top-tier customer experience and outstanding customer service are our highest priorities. We believe in true entrepreneurship and long-term stability and align our corporate strategy with foresight. Get started with us and apply now!