Senior Data Scientist

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 diversity and inclusion, talented peers, comprehensive benefits and career development opportunities. Come make an impact on the communities we serve as you help us advance health equity on a global scale. Join us to start Caring. Connecting. Growing together.

Primary Responsibilities:

• Develop and implement AI/ML solutions using Python, pandas, numpy, and SQL
  
• Utilize frameworks such as Scikit Learn, TensorFlow, and PyTorch to build and deploy models
  
• Perform exploratory data analysis (EDA), statistical analysis, and feature engineering to uncover insights and patterns in data
  
• Build, tune, and evaluate machine learning models for predictive and prescriptive analytics
  
• Conduct drift analysis to monitor model performance and ensure accuracy over time
  
• Collaborate with cross-functional teams to understand business requirements and translate them into technical solutions
  
• Work on the full life cycle of AI/ML projects, including data preparation, model development, tuning, and deployment
  
• Ensure the scalability, reliability, and efficiency of AI/ML solutions in production environments
  
• Stay updated with the latest advancements in AI/ML techniques and tools, and identify opportunities to apply them to enhance existing solutions
  
• Document and communicate findings, methodologies, and insights to technical and non-technical stakeholders
• Comply with the terms and conditions of the employment contract, company policies and procedures, and any and all directives (such as, but not limited to, transfer and/or re-assignment to different work locations, change in teams and/or work shifts, policies in regards to flexibility of work benefits and/or work environment, alternative work arrangements, and other decisions that may arise due to the changing business environment). The Company may adopt, vary or rescind these policies and directives in its absolute discretion and without any limitation (implied or otherwise) on its ability to do so

Required Qualifications:

• Bachelor’s or Master’s degree in Computer Science, Data Science, Statistics, or a related field
• 3+ years of experience in Data Science, AI/ML, or a similar role
• Hands-on experience in delivering production-grade AI/ML projects
• Experience with the full life cycle of AI/ML projects, including EDA, model development, tuning, and drift analysis
• Experience in testing model bias and fairness to meet the responsible use of AI standards Solid understanding of mathematical and statistical concepts
• Proficiency in frameworks such as Scikit Learn, TensorFlow, and PyTorch
• Proven solid programming skills in Python, with experience in pandas, numpy, and SQL
• Proven excellent problem-solving and analytical thinking skills
• Proven solid communication and collaboration skills to work effectively in a team environment

Preferred Qualifications:

• Knowledge of Big Data technologies (PySpark, Hadoop) and data streaming tools (Kafka, etc.)
• Familiarity with the US Healthcare domain
• Familiar with Transformers, Large Language Models, RAG and AI Agents
• Familiarity with cloud technologies

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.