Senior Data Scientist

Description

Summary: Seeking a Senior Data Scientist specializing in LLMs and Python to develop AI-powered chatbot solutions for specialized use cases, focusing on NLP, Conversational AI, and Responsible AI. Highlights: 1. Develop AI-powered chatbot solutions using Large Language Models and Python 2. Focus on Natural Language Processing, Conversational AI, and Responsible AI 3. Partner with cross-functional teams to build and enhance chatbots We are seeking a **Senior Data Scientist** with expertise in Large Language Models (LLMs) and Python to develop AI\-powered chatbot solutions for specialized use cases. The ideal candidate has a strong background in Natural Language Processing (NLP) and Conversational AI, with experience in hallucination prevention, Responsible AI \& compliance, and data analysis. **Responsibilities** * Partner with cross\-functional teams across product, analytics, and engineering to build and enhance a shopping assistant chatbot * Develop and refine prompt engineering strategies to elevate the quality of chatbot interactions * Implement LLM\-based agents that connect with APIs, databases, and external tools through function calling * Safeguard chatbot reliability and prevent hallucinations by applying model evaluation techniques * Leverage A/B testing frameworks to measure and continuously improve chatbot performance * Apply Responsible AI and compliance principles to guarantee ethical practices and regulatory alignment * Perform exploratory data analysis (EDA) to uncover insights and translate them into structured requirements for the data engineering team * Guide cloud engineering teams on the infrastructure needs required for AI\-powered chatbot solutions **Requirements** * At least 3 years of professional relevant experience in data science or applied AI roles * Expertise in Large Language Models, including practical use of OpenAI APIs on Azure * Strong Python programming skills for integrating, orchestrating, and optimizing AI workflows * Experience developing AI agents leveraging function calling to interact with external tools and databases * Solid knowledge of hallucination prevention techniques to maintain chatbot accuracy and reliability * Strong understanding of Responsible AI and compliance best practices, including ethical AI guidelines * Proven background in Natural Language Processing (NLP) and Conversational AI development * Fluent English communication skills at a B2 level or higher, both written and verbal **Nice to have** * Hands\-on experience with A/B testing and experimentation, collaborating closely with analytics teams * Ability to define and implement a testing strategy using key performance metrics tailored to chatbot solutions * Proficiency in exploratory data analysis (EDA) to extract meaningful insights from large datasets * Capability to define clear and structured data requirements for the data engineering team * Understanding of cloud services, either through direct hands\-on experience or the ability to specify infrastructure requirements 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