Job
Cryptography Specialist for AI lab
Toptal
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
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