Senior Cryptography Engineer (PQC) - Hardware Acceleration

Entangled Future; Genf; Hybrid; CHF 180,000 - 240,000; Full time

Benefits offered by this job

Competitive compensation

Equity plan

Flexible work model

Training & development

Global team

Job summary

IonQ in Geneva, Switzerland is seeking a Staff Cryptography Engineer to join the Quantum Platform—Network & Security team. You will implement post-quantum cryptography software, build reference models, and develop test infrastructure for PQC algorithms.

The role requires mastery in C/C++/Rust, Python, and a Master’s degree with 5+ years in cryptographic software. You will collaborate with experienced engineers in a hands-on, security-critical environment.

Qualifications

• Master’s degree in Cryptography, Mathematics, Computer Science or a related field with at least five years of cryptographic software experience.
• Solid understanding of modern cryptographic primitives; exposure to post-quantum schemes (lattice-based or hash-based) and their mathematics.

Responsibilities

• Implement and maintain reference and bit-accurate models of ML-KEM, ML-DSA and SLH-DSA/LMS in C/C++/Rust and Python.
• Develop constant-time software implementations of cryptographic functions and test-vector tooling (NIST ACVP) for verification and CAVP certification.
• Assist hardware and firmware teams with algorithm questions, debugging and evaluation of third-party cryptographic libraries.

Skills

C/C++

Rust

Python

Cryptography

Post-quantum

Education

Master’s degree in Cryptography/CS/Math

Tools

NIST ACVP tooling

CAVP tooling

Job description

IonQ in Geneva, Switzerland is seeking a Staff Cryptography Engineer to join the Quantum Platform—Network & Security team. You will implement post-quantum cryptography software, build reference models, and develop test infrastructure for PQC algorithms.

The role requires mastery in C/C++/Rust, Python, and a Master’s degree with 5+ years in cryptographic software. You will collaborate with experienced engineers in a hands-on, security-critical environment.