AI/ML Applied Scientist - Remote

About the position Optum AI is UnitedHealth Group’s enterprise AI team, comprised of AI/ML scientists and engineers with deep expertise in AI/ML engineering for healthcare. We develop AI/ML solutions for high-impact opportunities across UnitedHealth Group businesses, including UnitedHealthcare, Optum Financial, Optum Health, Optum Insight, and Optum Rx. Our charter includes transforming the healthcare journey through responsible AI/ML innovation and developing/supporting an enterprise AI/ML development platform. Team members have the opportunity to make an impact at scale due to the data and resources available, engage in ground-breaking work with cutting-edge ML, NLP, and LLM techniques, and partner with world-class experts to develop novel AI/ML solutions, potentially leading to patents and publications. We are working in a critical frontier of AI/ML research and development. Responsibilities • Developing new solutions and science best practices in Responsible AI • Developing and implementing models and methods that extend and improve LLM capabilities and reliability • Research, design and implement scalable machine learning solutions • Developing our research and innovation agenda • Design, implement and deploy Deep Learning models, RAG and LLMs • Collaborating with the Optum AI team and fellow scientist and engineers Requirements • Master degree in computer science, Machine Learning, statistics, engineering, mathematics, or another STEM discipline • 3+ years of DL frameworks such as PyTorch and/or TensorFlow • 2+ years of experience using ML to solve problems in natural language processing (NLP), multimodal RT processing, and/or other AI domains • 2+ years of experience in Generative AI, grounding architectures, fine-tuning LLMs and/or improving pre-train LLM’s performance • 2+ years of developing machine learning applications • 1+ year of solid agentic research and developing experience Nice-to-haves • Ph.D. in Machine Learning with focus on NLP and/or GenAI • Experience with Advanced Deep Learning, applied math and statistics • Proven solid technical and scientific knowledge about generative AI Benefits • comprehensive benefits package • incentive and recognition programs • equity stock purchase • 401k contribution