Senior Cryptography Engineer

Entangled Future; Genf; Ibrido; CHF 150.000 - 190.000; Tempo pieno

Vantaggi offerti da questo lavoro

Equity plan

Flexible work

Training & development

Career growth

Global team

Competitive pay

Descrizione del lavoro

IonQ, located in Geneva, Switzerland, seeks a Senior Cryptography Engineer to join the Quantum Platform - Network & Security team. The role centers on building post-quantum cryptography hardware acceleration for HSM and network-appliance products, with hands-on development in C/C++/Rust and Python.

You will implement reference models and constant-time crypto functions, participate in verification tooling and CAVP/NIST validation, and collaborate with RTL and firmware engineers on algorithm

Competenze

• Hands-on cryptography development experience preferred.
• Experience with constant-time implementations.
• Familiarity with cryptographic libraries and testing tooling.

Mansioni

• Implement and maintain reference models for ML-KEM, ML-DSA and SLH-DSA/LMS in C/C++/Rust and Python.
• Develop test-vector tooling and verification infrastructure (NIST ACVP) for certification.

Conoscenze

C/C++/Rust

Python

Strumenti

NIST ACVP

Descrizione del lavoro

Senior Cryptography Engineer at IonQ, Geneva, Switzerland. A senior-level full time position in the Quantum Platform - Network & Security team, listed under software engineering.

Job ID: 1893

ID Quantique (IDQ), part of IonQ, is a global leader in quantum-safe communications. We provide solutions to protect governments, telecommunication infrastructures, and banking & financial institutions from the “harvest-now, decrypt-later” threat, delivering both terrestrial and space-based quantum-safe networks in live operation globally.

The Role

We are looking for a Staff Cryptography Engineer to join our team building post-quantum cryptography (PQC) hardware acceleration for HSM and network-appliance products. You will implement the software side of modern post-quantum algorithms: reference models, optimised implementations, and the test infrastructure that proves they are correct. This is a hands-on development role at the heart of applied cryptography, working with some of the most experienced cryptographic engineers in the field.

Responsibilities

You will 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 build out the known-answer-test and test-vector tooling (NIST ACVP) used for verification and CAVP certification. You will contribute to the decomposition of algorithms into hardware-friendly building blocks (Keccak, NTT and polynomial arithmetic, samplers, encode/decode), support RTL and firmware engineers with algorithm questions and debugging, and help evaluate third-party cryptographic libraries, working under the guidance of our senior cryptography engineers.

• Implement reference models, optimised software and test-vector infrastructure for ML-KEM, ML-DSA and SLH-DSA/LMS
• Support hardware and firmware teams with algorithm expertise, debugging and certification-oriented tooling

Benefits

• A role at one of the fastest growing and most exciting quantum companies in the world
• A competitive compensation scheme, benefits package, and equity plan designed to reward excellence
• Flexible work models that let you balance your life, your family, and your career
• Ongoing training and development to keep your skills sharp and your growth on track
• A career development plan within the IonQ group’s companies
• A dynamic, close-knit environment where you collaborate with a global team of experts
• A performance-driven culture built on trust, teamwork, and shared ambition