Lead Data Scientist - Remote | Minnetonka, Minnesota | Remote

Senior AI/ML Engineering PositionOptum is a global organization that delivers care, aided by technology to help millions of people live healthier lives. The work you do with our team will directly improve health outcomes by connecting people with the care, pharmacy benefits, data and resources they need to feel their best. Here, you will find a culture guided by inclusion, talented peers, comprehensive benefits and career development opportunities. Come make an impact on the communities we serve as you help us advance health optimization on a global scale. Join us to start Caring. Connecting. Growing together.This role is a senior, hands-on AI/ML engineering position focused on building, enhancing, and integrating Machine Learning and Generative AI solutions within Databricks.Working in office if based in MSP or DCPrimary Responsibilities:Designing and implementing ML modelsCreating custom embeddingsBuilding RAG pipelinesImplementing vector databasesDeveloping agentic workflows with LangChainIntegrating AI into enterprise applications for Claims Payment Integrity (PI)The role partners closely with Data Scientists, Product Teams, and Platform Teams to deploy AI-driven intelligence across PI use casesContribute to experimentation with novel ML and Generative AI architecturesCreate and maintain embedding models (domain-specific embeddings, document/text embeddings)Support Retrieval-Augmented Generation (RAG) solutions, including semantic search, vector databases, and LLM integrationHelp design and implement AI-powered enterprise applicationsAnalyze large datasets to identify trends, patterns, and actionable insightsPartner with AI/ML Engineers and Leads to enhance existing models and improve model accuracy and performanceOptimize AI pipelines for scalability, performance, reliability, and cost efficiencyIntegrate AI/ML solutions into enterprise systems by partnering closely with data engineering, product, and platform teamsCollaborate effectively with cross-functional teams and stakeholders, communicating complex technical concepts clearlyContribute to skill development for engineers and interns in AI/LLM techniquesComply with company policies, procedures, and directivesRequired Qualifications:Bachelor's/Master's in CS, Engineering, Mathematics/Statistics, or related5+ years of experience as a Data Scientist5+ years of relevant experience, including strong ML end to end model development (data prep ? feature creation ? training ? evaluation)5+ years of experience with Python, Scala, SQL3+ years of Databricks, Spark2+ years of experience with LLM & GenAI Skills:Creating custom embedding modelsBuilding RAG pipelinesVector DBs & semantic searchUsing LangChain for agentic workflows (tools, agents, memory)Experience with OpenAI/Azure OpenAI APIsExperience with Azure cloud for compute, security, and resource managementCI/CD familiarity using Git, GitHub Actions/Jenkins, TerraformExcellent communication and partnership skillsExperience with Actuarial, Risk and Forecasting ModelsPreferred Qualifications:Experience with healthcare claims dataExperience with Azure, Databricks, Snowflake, LLMs and/or similar toolsDemonstrated problem-solving, and analytical thinking skillsDemonstrated organizational skills with ability to be flexible and work with ambiguityPay is based on several factors including but not limited to local labor markets, education, work experience, certifications, etc. In addition to your salary, we offer benefits such as, a comprehensive benefits package, incentive and recognition programs, equity stock purchase and 401k contribution (all benefits are subject to eligibility requirements). The salary for this role will range from $112,700 to $193,200 annually based on full-time employment. We comply with all minimum wage laws as applicable.UnitedHealth Group is an Equal Employment Opportunity employer under applicable law and qualified applicants will receive consideration for employment without regard to race, national origin, religion, age, color, sex, sexual orientation, gender identity, disability, or protected veteran status, or any other characteristic protected by local, state, or federal laws, rules, or regulations.UnitedHealth Group is a drug - free workplace. Candidates are required to pass a drug test before beginning employment.