Data Scientist

We are seeking a Data Scientist to help build and maintain a robust evaluation framework for conversational AI systems. This role will focus on developing automated AI quality measurement solutions, including LLM-as-a-Judge systems, to assess hallucination rates, intent accuracy, transcript quality, and responsible AI metrics at scale.

As a key member of our AI Quality team, you will work closely with annotation specialists, product teams, and governance stakeholders to ensure our AI experiences are accurate, safe, compliant, and customer-centric.

• Design and develop LLM-as-a-Judge evaluation frameworks for conversational AI systems.
• Build automated monitoring solutions to evaluate millions of voice and chat-based customer interactions.
• Collaborate with user experience teams to identify core metrics and evaluation criteria.
• Validate model performance against human-labeled datasets using statistical best practices.
• Measure and report precision, recall, false-positive rates, and false-negative rates.
• Develop statistical sampling methodologies and quality measurement frameworks.
• Continuously calibrate and improve evaluation models as production AI systems evolve.
• Analyze hallucination rates, intent classification accuracy, transcript quality (WER), guardrail effectiveness, vulnerability to jailbreak attempts, and fairness metrics.
• Create dashboards and reporting to support governance, legal, compliance, and Responsible AI reviews.
• Collaborate with annotation teams to improve label quality and gold-standard datasets.
• Support future multilingual AI evaluation initiatives.

• Master’s degree or PhD in Data Science, Statistics, Computer Science, Machine Learning, or related field, or equivalent experience.
• 3+ years of experience in data science, machine learning, analytics, or AI model evaluation.
• Experience analyzing voice-based language data.
• Strong experience with Python and data science tooling.
• Experience designing experiments and evaluating machine learning models.
• Knowledge of statistical analysis, sampling methodologies, and model validation techniques.
• Experience with Generative AI, LLMs, or conversational AI systems.
• Familiarity with AI safety, Responsible AI, fairness, bias, and governance frameworks.
• Experience developing automated evaluation systems. *