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Cryptography Specialist for AI lab

Toptal

Remote Full-Time Task based compensation
Closes in 30 days · Dec 5, 2026

About

A task-based role designing expert-level cryptography challenges for AI agents based on real professional work.

Requirements

  • 3+ years of hands-on cryptanalysis or applied cryptography
  • Experience in the last 3 years naming systems, tools, data and rules used
  • Proficiency with SageMath, Python, and Linux command line
  • Technical fluency with files, CSV/JSON, APIs or databases
  • Available to start around November 2026

Responsibilities

  • Design expert-level Terminal-Bench cryptography tasks
  • Define task environments for realistic, self-contained, and reproducible challenges
  • Write working reference solutions in Python or SageMath
  • Build automated checks and tests to verify results
  • Calibrate task difficulty for AI agents
  • Package tasks with Docker and Git
CryptographyAIPythonSageMathLinux

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