United States

Optum Tech (UnitedHealth Group) is hiring a Senior Data Scientist

Responsibilities

  • Develop and deploy statistical models and machine learning algorithms using Python
  • Perform exploratory data analysis (EDA) to identify trends, risks, and actionable insights
  • Design and evaluate models for classification, regression, clustering, and anomaly detection
  • Build and optimize ML models supporting Defensive AI, automation, and intelligence use cases
  • Perform feature engineering and model tuning for performance, scalability, and explainability
  • Prepare and validate datasets for GenAI, LLM, and advanced ML workflows
  • Partner with data engineering and platform teams to operationalize models
  • Support model monitoring, performance tracking, and continuous improvement
  • Ensure models align with enterprise standards for security, governance, and compliance
  • Collaborate closely with Data Engineering, AI Platform, Product, and Security teams
  • Translate business problems into data science solutions and measurable outcomes
  • Communicate insights and model results clearly to technical and non‑technical stakeholders

Requirements

  • Experience working with large, complex, enterprise‑scale datasets
  • GenAI / LLM data preparation and understanding of prompt‑ready datasets
  • Proven solid Python for data analysis, ML modeling, and automation
  • Proven applied statistics & machine learning (classification, regression, anomaly detection)
  • Proven feature engineering & model evaluation techniques
  • Proven SQL for data analysis and large‑scale dataset exploration

Nice to Have

  • Experience working in Agile, cross‑functional product teams
  • Knowledge of cloud platforms (Azure preferred)
  • Familiarity with MLOps, model monitoring, and CI/CD for ML
  • Proven exposure to Databricks / Spark / Big Data ecosystems
Required Skills
PythonSQLAzureDatabricksSparkMachine LearningStatisticsFeature EngineeringLarge-scale DataGenAILLMData AnalysisAutomation cloud platformsMLOpsmodel monitoringCI/CD for ML
About company
Optum Tech (UnitedHealth Group)
Optum Tech is a global leader in health care innovation. Our teams develop cutting-edge solutions that help people live healthier lives and help make the health system work better for everyone. From advanced data analytics and AI to cybersecurity, we use innovative approaches to solve some of health care’s most complex challenges.
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Job Details
Department Data and Analytics
Category data
Posted 3 months ago