We're leading the way in AI solutions, and we're committed to innovation, collaboration, and ethical practices. Applications from candidates who do not meet this legal and operational requirement will not be considered. Nexaminds is looking for a Senior Quality Engineer (AI) to lead the validation and quality strategy for AI-powered systems, including Large Language Models (LLMs), Retrieval-Augmented Generation (RAG) applications, and agent-based workflows. The adecuado candidate has deep experience in Quality Engineering, AI evaluation, and automated validation frameworks, with a strong understanding of how to measure, monitor, and improve the reliability of non-deterministic AI systems. This role focuses on building enterprise-grade AI validation capabilities, designing automated evaluation pipelines, implementing AI guardrails, and partnering closely with engineering, AI/ML, and data governance teams to ensure AI-powered solutions are accurate, safe, and production-ready.
Location: MEXICO (Remote)
7+ years of experience in Quality Engineering, Software Development,



or a related technical discipline, including recent hands-on experience with AI/ML or LLM-based systems.
~ Experience designing validation or evaluation frameworks fo r non-deterministic or probabilistic systems such as Large Language Models (LLMs) or Machine Learning applications.
~ Practical experience using Claude Code, Claude SDK, or similar AI-assisted development platforms and agentic coding tools.
~ Proficiency with Node.js for building automation tools, validation pipelines, and engineering utilities.
~ Experience working with MongoDB to store, manage, and analyze evaluation results, validation data, or AI output logs.
~ Experience designing semantic validation approaches that evaluate meaning, relevance, and contextual accuracy beyond traditional software testing.
~ Strong understanding of AI quality metrics, confidence scoring, output consistency, and production monitoring.
~ Solid knowledge of

📌 Senior Quality Systems Engineer (Ciudad de México)
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📍 Ciudad de México