AI Agent QA Engineer
An AI Agent QA Engineer specializes in validating, testing, and ensuring the reliability of autonomous AI agent systems powered by…
Skill Guide
Red-teaming, adversarial testing, and safety evaluation for AI agents is the systematic practice of probing AI systems for failure modes, harmful outputs, and safety gaps using adversarial techniques and structured evaluation frameworks.
Scenario
You have access to a hosted LLM API (e.g., OpenAI, Anthropic). The goal is to create a basic test suite that attempts to bypass content filters and extract hidden system prompts.
Scenario
Build a red-team agent that conducts multi-turn adversarial conversations to test an AI customer service agent for consistency, bias, and data leakage over a 10+ turn interaction.
Scenario
Design and implement a continuous evaluation pipeline for an AI coding assistant agent that tests for correctness, security vulnerabilities in generated code, and potential for causing downstream system failures.
Use these to structure your threat modeling, define evaluation criteria, and align with industry best practices. ATLAS provides a knowledge base of adversary tactics, NIST AI RMF offers a lifecycle risk management process, and OWASP LLM Top 10 outlines specific application vulnerabilities.
Garak automates probing for known vulnerability classes. Promptfoo allows defining custom adversarial test cases and evaluating prompts across models. LangSmith/LangFuse help trace and evaluate agent chains in production for safety and performance.
FMEA helps systematically identify potential failure points in an AI system's design. Attack Trees visually map how an adversary might achieve a harmful goal. STRIDE (Spoofing, Tampering, Repudiation, Information Disclosure, Denial of Service, Elevation of Privilege) can be adapted to model AI-specific threats.
Answer Strategy
The candidate should demonstrate a structured threat modeling approach (e.g., using STRIDE or attack trees) tailored to the specific architecture. A strong answer will reference: 1) Vector database risks (data poisoning, similarity search manipulation, embedding inversion attacks). 2) Code execution risks (sandbox escapes, resource exhaustion, malicious code generation via prompt injection). 3) Integration risks (the agent might be tricked into retrieving malicious documents from the vector store and executing them). Sample answer: 'I would start with a threat model based on STRIDE for the full data flow. For the vector DB, I would test for data poisoning during ingestion and adversarial query perturbations to retrieve unintended contexts. For code execution, I would focus on prompt injection to generate malicious payloads and test the sandbox's isolation. A critical test would be chaining these: injecting a document that, when retrieved, triggers the agent to execute harmful code.'
Answer Strategy
This behavioral question assesses communication, impact assessment, and stakeholder management skills. The candidate should use the STAR (Situation, Task, Action, Result) method. A strong answer focuses on: 1) Clearly defining the technical flaw and its potential business impact. 2) Tailoring the communication to technical and non-technical stakeholders. 3) Proposing concrete mitigation steps, not just identifying the problem. Sample answer: 'Situation: While evaluating a customer-facing chatbot, I discovered it would reliably disclose internal API structures under specific multi-turn prompts. Task: I needed to escalate this as a security risk. Action: I prepared a concise demo, a risk assessment linking the flaw to potential competitive intelligence loss, and a proposed fix involving prompt hardening and output filtering. Result: The feature was temporarily disabled, the vulnerability was patched in the next sprint, and we integrated a new adversarial test case into our evaluation suite.'
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