Cryptography Engineer

About

ShareID delivers real-time, secure authentication using official ID documents and a simple smile. Our AI-powered solution verifies IDs from over 120 countries with 99.9% accuracy, confirms document ownership, and ensures user liveness—without storing personal data. With our patented technology, users get a reusable digital identity and ongoing access to verifiable credentials.

Our mission is to transform authentication by making it seamless, trustworthy, and user-friendly.

Founded at Station F by Sara, a financial engineer with 9+ years in regulatory risk, and Sawsen, a PhD in computer vision with experience at Cisco’s Innovation Lab, ShareID combines deep expertise in security, AI, and digital identity.

Job Description

Your responsibilities You will be in charge of :

• The design of encryption and hashing algorithms
• The implementation of “homomorphic encryption algorithms”
• Follow the latest published research and inform the team of potential new applications
• Design robust tests and benchmarks to validate your research
  
  

Perks

You will spend the best time of your life helping build the MFA 3.0! But if it really matters:

• Competitive salary package
• Remote policy from 2 days per week to full remote
• 5 to 10 days off in addition to the 25 legal days
• Alan health care insurance
• 50% of public transportation cost
• An inclusive and equal environment (8 nationalities on a team of 11)
• Visa sponsorship for international talents
  
  

Preferred Experience

We are looking for a cryptography Engineer with:

• Masters or PhD in a relevant field
• Strong understanding of security for privacy-preserving techniques and Cryptographic problem solving (MPC, HE, FE, others)
  
  

Additional Information

• Contract Type: Full-Time
• Start Date: 01 January 2026
• Location: Paris
• Education Level: Master's Degree
• Occasional remote authorized