Applied cryptography - Internship, Ledger

Ledger

Location:
France, Paris

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

1500.00 EUR / Month

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Job Description:

The internship involves working with Ledger’s Donjon team, which focuses on security for Ledger products. The role includes investigating the integration of zero-knowledge succinct proofs of validity into hardware devices, assessing the practicality of implementing verification logic for a proof system onto secure hardware, selecting proof systems, conducting benchmarking, and developing optimizations for hardware constraints.

Job Responsibility:

Investigate integration of zero-knowledge succinct proofs of validity, such as SNARKs, into hardware devices
Assess practicality of deploying verification logic for succinct proof systems onto a constrained Secure Element
Select suitable open-source proof system
Conduct benchmarking to measure performance of proof verification across standard use cases
Develop optimizations for proof logic tailored to Secure Element's constraints

Requirements:

Strong background in cryptography
Basic knowledge of zero-knowledge succinct proof systems
Comfortable with coding

Nice to have:

Experience with development on embedded devices (microcontrollers, etc.)

What we offer:

Frequent social events, snacks and drinks
Transportation allowance
Meal allowance with Swile
Vacation: 1 day off for every full month of work in addition to national holidays

Additional Information:

Job Posted:
November 09, 2025

Employment Type:

Fulltime

Work Type:

On-site work

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Applied cryptography - Internship