Senior Data Scientist

PayPal
New York City, NY
Job Description
PayPal is seeking a Senior Data Scientist to lead the development and implementation of advanced data science models and algorithms. This role involves collaboration with stakeholders, ensuring data quality, mentoring junior scientists, and driving best practices in data science. The company emphasizes innovation, collaboration, and inclusivity, operating a global two-sided network connecting merchants and consumers.

Requirements

  • 5+ years experience in developing and optimizing machine learning models using Python with TensorFlow, Keras, and/or PyTorch.
  • Expertise in Graph Neural Networks (GNNs) for node and link prediction, graph embedding, and graph-based classification.
  • Proven experience in customer segmentation and/or recommendation systems tailored to client needs.
  • 5+ years experience in building and maintaining scalable ML pipelines using tools such as Kubeflow, MLFlow, Vertex AI, and SageMaker.
  • 5+ years experience in processing and analyzing very large datasets using Spark or similar frameworks.
  • Working with vector databases (e.g., Pinecone) for embedding-based applications, including search and similarity tasks.
  • Utilizing GCP Services to deploy models at scale, particularly BigQuery and Vertex AI.

Benefits

  • Flexible work environment
  • Employee shares options
  • Health and life insurance
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