Requisition Number: 2370733 We are looking for a talented and motivated Lead AI-ML Engineer to join our team. The perfect candidate will have experience with LLMs and be skilled in developing and implementing machine learning solutions. You will utilize the Langchain framework to work with both closed source and open source models, and apply fine-tuning and Retrieval-Augmented Generation (RAG) methodologies to optimize language models for specific tasks and datasets. Key Responsibilities: *Develop and implement machine learning solutions using LLMs. *Utilize the Langchain framework for working with closed source and open source models. *Apply fine-tuning methodologies to optimize machine learning models for specific tasks and datasets. *Write clean, maintainable, and efficient code adhering to PEP8 standards. *Utilize containerization technologies such as Docker for development and deployment. *Ensure the production quality of code, including thorough testing and documentation. *Be comfortable working on the terminal for various development and deployment tasks. *Work on traditional machine learning methods like XGBoost for classification tasks and unsupervised learning techniques like K-means. *Graduate degree or equivalent experience. *Candidate with 8+ years of experience in ML, deep learning and GenAI. *Proven experience with LLMs. *Proficiency in using the Langchain framework. *Strong understanding of machine learning concepts and fine-tuning methodologies. *Experience with Retrieval-Augmented Generation (RAG) techniques. *Excellent coding skills in Python, with adherence to PEP8 standards. *Basic understanding of containerization technologies such as Docker. *Strong problem-solving skills and attention to detail. *Ability to write clean, maintainable, and efficient code. *Experience in ensuring the production quality of code, including thorough testing and documentation. *Comfortable working on the terminal for various development and deployment tasks. *Experience with version control systems such as Git. Careers with Optum. Here's the idea. We built an entire organization around one giant objective; make the health system work better for everyone. So when it comes to how we use the world's large accumulation of health-related information, or guide health and lifestyle choices or manage pharmacy benefits for millions, our first goal is to leap beyond the status quo and uncover new ways to serve. Optum, part of the UnitedHealth Group family of businesses, brings together some of the greatest minds and most advanced ideas on where health care has to go in order to reach its fullest potential. For you, that means working on high performance teams against sophisticated challenges that matter. Optum, incredible ideas in one incredible company and a singular opportunity to do your life's best work. SM Diversity creates a healthier atmosphere: UnitedHealth Group is an Equal Employment Opportunity/Affirmative Action employer and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, national origin, protected veteran status, disability status, sexual orientation, gender identity or expression, marital status, genetic information, or any other characteristic protected by law. UnitedHealth Group is a drug-free workplace. Candidates are required to pass a drug test before beginning employment.