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Chief Data Scientist

EPAM Systems

, , argentina, , , argentina, Argentina Full-time July 10, 2026
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Vacancy Description

We are seeking a Chief Data Scientist with extensive expertise in Large Language Models (LLMs) and Python to develop AI-powered chatbot solutions for specialized use cases.

The ideal candidate offers a strong grounding in Natural Language Processing (NLP) and Conversational AI, together with practical experience in hallucination reduction, Responsible AI and compliance, and data analysis.

Responsibilities

  • Collaborate with cross-disciplinary teams across product, analytics, and engineering to craft and enhance a shopping assistant chatbot
  • Design and iterate on prompt engineering techniques to lift the quality of chatbot dialogues
  • Develop LLM-based agents that connect with APIs, databases, and third-party services through function calling
  • Ensure chatbot stability and minimize hallucinations by employing thorough model evaluation practices
  • Apply A/B testing frameworks to gauge and steadily boost chatbot ...

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