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Sr Machine Learning Engineer

PayPal

$137,500 - $236,500
Dec 24, 2025
Chicago, IL, US
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PayPal is looking to solve complex problems using machine learning models and algorithms to improve cross-functional efficiency and regulatory readiness.

Requirements

  • Experience with ML frameworks like TensorFlow, PyTorch, or scikit-learn.
  • Familiarity with cloud platforms (AWS, Azure, GCP) and tools for data processing and model deployment.
  • Several years of experience in designing, implementing, and deploying machine learning models.
  • 3+ years relevant experience
  • Experience with data lineage extraction, traceability reconstruction, model documentation automation, and regulatory reporting support grounded in enterprise policies and structured data sources.

Responsibilities

  • Develop and optimize machine learning models for various applications.
  • Preprocess and analyze large datasets to extract meaningful insights.
  • Deploy ML solutions into production environments using appropriate tools and frameworks.
  • Collaborate with cross-functional teams to integrate ML models into products and services.
  • Monitor and evaluate the performance of deployed models.
  • Design and build agentic AI systems (LLM reasoning, RAG, tool use, workflow orchestration) that improve cross-functional efficiency.
  • Build and benchmark traditional ML models (classification, forecasting, anomaly detection) that augment and support agentic workflows.

Other

  • 3+ years relevant experience and a Bachelor’s degree OR Any equivalent combination of education and experience.
  • The U.S. national annual pay range for this role is $137,500 to $236,500
  • PayPal offers a flexible work environment, employee shares options, health and life insurance and more.
  • PayPal provides equal employment opportunity (EEO) to all persons regardless of age, color, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, pregnancy, sexual orientation, gender identity and/or expression, genetic information, marital status, status with regard to public assistance, veteran status, or any other characteristic protected by federal, state, or local law.
  • PayPal will provide reasonable accommodations for qualified individuals with disabilities.