Chief Data Scientist

Description

Summary: Seeking a Chief Data Scientist with expertise in LLMs and Python to develop AI-powered chatbot solutions, focusing on NLP, Conversational AI, hallucination reduction, and Responsible AI. Highlights: 1. Develop AI-powered chatbot solutions for specialized use cases 2. Lead initiatives in Natural Language Processing and Conversational AI 3. Ensure ethical AI behavior and regulatory alignment 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 effectiveness * Integrate Responsible AI and compliance foundations to secure ethical behavior and regulatory alignment * Conduct exploratory data analysis (EDA) to reveal insights and translate them into precise specifications for the data engineering team * Guide cloud engineering teams on the infrastructure prerequisites needed for AI\-driven chatbot rollouts **Requirements** * At least 7 years of applied professional experience in data science or AI\-focused roles * A minimum of 2 years of leadership and team management background * Strong mastery of Large Language Models, including working experience with OpenAI APIs on Azure * Advanced Python development skills for connecting, orchestrating, and enhancing AI workflows * Proven history of creating AI agents that leverage function calling to interact with external systems and databases * Sound understanding of hallucination mitigation techniques to keep chatbot outputs accurate and reliable * Clear grasp of Responsible AI and compliance principles, together with ethical AI guidelines * Established expertise in Natural Language Processing (NLP) and Conversational AI development * Strong English communication abilities at B2 level or higher, in both written and spoken formats **Nice to have** * Hands\-on experience with A/B testing and experimentation, partnering closely with analytics teams * Ability to shape and put in place a testing framework built around key performance metrics tailored to chatbot solutions * Command of exploratory data analysis (EDA) to extract meaningful patterns from large datasets * Capability to prepare clear, structured data requirements for the data engineering team * Awareness of cloud services, whether through direct hands\-on involvement or by defining infrastructure needs for cloud engineering teams **We offer** * International projects with top brands * Work with global teams of highly skilled, diverse peers * Healthcare benefits * Employee financial programs * Paid time off and sick leave * Upskilling, reskilling and certification courses * Unlimited access to the LinkedIn Learning library and 22,000\+ courses * Global career opportunities * Volunteer and community involvement opportunities * EPAM Employee Groups * Award\-winning culture recognized by Glassdoor, Newsweek and LinkedIn