Agentic AI QA Engineer (mfd)

As a Customer Service Agentic AI QA Engineer (m/f/d) you ensure that SIXTs virtual agents and Generative-AIpowered workflows deliver reliable safe and delightful support across all customer service channels. You design and run intelligent test strategies for LLM- and agent-based systems combining classic QA skills with a deep understanding of agentic automation conversational AI and customer service KPIs. 

YOUR ROLE AT SIXT

• Design and execute end-to-end test plans for customer service virtual agents (voice chat email). Build and maintain agentic AI test suites validating autonomous workflows (e.g. booking changes billing damages).
• Define and monitor AI quality metrics such as resolution rate deflection CSAT and safety violations. Develop test data and synthetic scenarios for edge cases ambiguous queries and multilingual requests.
• Evaluate agent behavior through reasoning traces tool-use decisions and memory usage.
• Implement and improve automated testing frameworks for conversational flows APIs and integrations. Contribute to LLMOps / CI/CD pipelines to automatically detect regressions.
• Perform bias fairness and safety testing in line with SIXT policies and regulatory expectations. Collaborate with cross-functional teams to refine requirements and acceptance criteria.
• Document defects test results and insights clearly for stakeholders.

YOUR SKILLS MATTER

• Foundations Several years of experience in software QA / test engineering. Strong understanding of testing principles: functional regression integration performance.
• AI Testing Hands-on experience testing AI or ML systems such as LLM chatbots or recommendation engines. Familiarity with key concepts of multi-agentic systems agentic frameworks (e.g. LangChain) AWS AgentCore.
• Automation Scripting skills in Python and experience with REST API testing.
• LLMOps: Understanding of LLMOps / MLOps: versioning monitoring rollback strategies.
• Customer Focus Experience or interest in customer service processes and KPIs.
• Communication Excellent analytical documentation and communication skills. Fluency in English; German or additional languages a plus.

WHAT WE OFFER

• Generous Time Off Enjoy 28 days of vacation an additional day off for your birthday and 1 volunteer day per year
• Work-Life Balance & Flexibility Benefit from a hybrid working model flexible working hours and no dress code
• Great Employee Benefits Access discounts on SIXT rent share ride and SIXT along with partner discounts
• Training & Development Participate in training programs external conferences and internal dev & tech talks designed for your personal growth and development
• Health & Well-being Private health insurance to support your well-being
• Additional Perks Enjoy the Coverflex advantage system to enhance your employee experience

Additional Information :

About us:

We are a globally leading mobility service provider with a revenue of 4.00 billion and around 9000 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 350000 vehicles the services of 4000 cooperation partners and around 5 million drivers worldwide. Together with our franchise partners we are present in more than 110 countries at 2000 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!

Remote Work :

No

Employment Type :

Full-time