Chief Data Scientist
EPAM Systems • , , argentina, , , argentina • Posted July 10, 2026
Position Overview
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 ...