Principal Backend QA Engineer (AI)

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Nexaminds

is looking for a Senior Backend QA Engineer with strong API automation expertise and a focus on AI System Validation. In this role, you will be responsible for designing automated test frameworks, analyzing upstream service architectures, and validating non-deterministic systems (such as AI agents and chatbots). The ideal candidate excels at structuring high-quality test plans from complex requirements, utilizing modern automation frameworks, and leveraging AI techniques (like LLM as a Judge and scoring evaluations) to test applications beyond traditional deterministic methods.

Location: United States

Qualifications we are looking for

• API & Backend Automation: Strong hands-on experience in API test automation using Karate Framework and manual API testing with Postman.
• AI & Non-Deterministic Testing: Understanding of testing non-deterministic systems, including response scoring techniques, AI agent/chatbot validation, or evaluation concepts like LLM as a Judge.
• Technical Code Analysis: Ability to read and analyze source code to understand backend architectures, microservices, service dependencies, and upstream impacts.
• Structured Test Planning: Proven skill in reviewing requirement documents to create concise, precise test plans and automation frameworks without relying on rigid language-specific constraints.
• Local Environment Setup: Hands