Optum 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.We are looking for a talented and motivated Data Scientist 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.Primary ResponsibilitiesDevelop and implement machine learning solutions using LLMsUtilize the Langchain framework for working with closed source and open-source modelsApply fine-tuning methodologies to optimize machine learning models for specific tasks and datasetsWrite clean, maintainable, and efficient code adhering to PEP8 standardsUtilize containerization technologies such as Docker for development and deploymentEnsure the production quality of code, including thorough testing and documentationBe comfortable working on the terminal for various development and deployment tasksWork on traditional machine learning methods like XGBoost for classification tasks and unsupervised learning techniques like K-meansYou'll be rewarded and recognized for your performance in an environment that will challenge you and give you clear direction on what it takes to succeed in your role as well as provide development for other roles you may be interested in.Required QualificationsUndergraduate degree or equivalent experience2+ years of proven experience working with Large Language Models (LLMs)2+ years of professional coding experience in Python, following PEP8 standards1+ years of hands-on experience using the LangChain framework2+ years of experience with machine learning concepts and fine-tuning methodologies1+ years of experience with Retrieval-Augmented Generation (RAG) techniques1+ year of experience with containerization technologies such as Docker1+ years of experience with version control systems such as Git.Experience ensuring production-quality code, including thorough testing and documentationProven solid problem-solving skills and attention to detailProven ability to write clean, maintainable, and efficient codeProven comfortable working in the terminal for development and deployment tasksPreferred QualificationsHealthcare experienceStatistical knowledgePay 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). No matter where or when you begin a career with us, you'll find a far-reaching choice of benefits and incentives. The salary for this role will range from $72,800 to $130,000 annually based on full-time employment. We comply with all minimum wage laws as applicable.At UnitedHealth Group, our mission is to help people live healthier lives and make the health system work better for everyone. We believe everyone-of every race, gender, sexuality, age, location and income-deserves the opportunity to live their healthiest life. Today, however, there are still far too many barriers to good health which are disproportionately experienced by people of color, historically marginalized groups and those with lower incomes. We are committed to mitigating our impact on the environment and enabling and delivering equitable care that addresses health disparities and improves health outcomes - an enterprise priority reflected in our mission.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.