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AI Research PhD Intern

Cash App

Salary not specified
Dec 3, 2025
San Francisco, CA, US
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Block's AI R&D team is looking to transform the way the company detects fraudulent behavior by investing in and advancing technologies in Graph Representation Learning, Sequential Modeling, Explainability, and Sequential Decision Making.

Requirements

  • 1-2 years of experience with applied Deep Learning
  • Proven ability to implement in practice neural network architectures described in literature using deep learning frameworks such as PyTorch
  • Python, Pytorch, Numpy, Pandas, SQL

Responsibilities

  • Develop new, standardized, datasets, either for internal use or for external release
  • Provide quantitative assessment of the advantages and disadvantages of different model classes based on accuracy, precision/recall, training cost, training time, data requirements, and interpretability
  • Explore the mathematical foundations of various model classes to understand their representational ability
  • Develop new algorithms or state of the art models for tasks of interest
  • Communicate your project status and results frequently

Other

  • This opportunity is only open to students who are currently enrolled in either a Masters or PhD program
  • Clear communication skills
  • A curious, passionate, growth-oriented mindset
  • Demonstrated ability to lead a research project from ideation to publication