Senior AI/ML Applied Scientist - Remote

About the role

Optum AI is a part of UnitedHealth Group, a global leader in health care innovation. Our team develops cutting-edge solutions that transform the health care journey through responsible AI/ML innovation.

Responsibilities

• Developing and implementing models and methods that extend and improve LLM capabilities and reliability
• Research, design and implement scalable machine learning models for real-time processing
• Developing new solutions and science best practices in Responsible AI
• Developing our research and innovation agenda
• Defining the strategies, priorities, and metrics for technical progress in Deep Learning, RAG and LLMs
• Collaborating with the Optum AI team and fellow scientists and engineers
• Driving adoption of new science and best practices among service teams

Requirements

• Ph.D. in Machine Learning with focus on NLP and/or GenAI or a Master degree in computer science or related quantitative field
• 5+ years of experience using ML to solve problems in natural language processing (NLP), multimodal RT processing, and/or other AI domains
• 3+ years of experience in Generative AI, grounding architectures, fine-tuning LLMs and/or improving pre-train LLM's performance
• 3+ years of DL frameworks such as PyTorch and/or TensorFlow
• 3+ years of developing machine learning applications
• 3+ years of solid NLP research and developing experience

Preferred Qualifications

• Experience with Advanced Deep Learning, applied math and statistics
• Experience developing and refining graph science methods and LLMs
• Experience developing agentic frameworks to empower autonomous agents
• Proven solid technical and scientific knowledge about generative AI

Benefits

We offer a comprehensive benefits package, incentive and recognition programs, equity stock purchase, and a 401(k) contribution. All benefits are subject to eligibility requirements. The salary for this role will range from $130,000 to $162,500 annually based on full-time employment. We comply with all minimum wage laws as applicable. At UnitedHealth Group, we are committed to helping people live healthier lives and making the health system work better for everyone. We are dedicated to mitigating our impact on the environment and delivering equitable care that addresses health disparities and improves health outcomes.