Staff Cryptography Engineer

About the role

<div class="content-intro"><p><strong>About IonQ:&nbsp;</strong><strong><br></strong></p> <p><u><a href="https://cts.businesswire.com/ct/CT?id=smartlink&amp;url=https%3A%2F%2Fionq.com%2F&amp;esheet=54451094&amp;newsitemid=20260316477473&amp;lan=en-US&amp;anchor=IonQ%2C+Inc&amp;index=7&amp;md5=0818ffbedc6dbad8c4d1611ac94c2a0f" target="_blank">IonQ, Inc</a></u>. [NYSE: IONQ] is the world’s leading quantum platform and merchant supplier - delivering integrated quantum solutions across computing, networking, sensing, and security. IonQ’s newest generation of quantum computers, the IonQ Tempo, is the latest in a line of cutting-edge systems that have been helping customers and partners including <u><a href="https://cts.businesswire.com/ct/CT?id=smartlink&amp;url=https%3A%2F%2Fionq.com%2Fnews%2Fionq-speeds-quantum-accelerated-drug-development-application-with&amp;esheet=54451094&amp;newsitemid=20260316477473&amp;lan=en-US&amp;anchor=Amazon+Web+Services%2C&amp;index=8&amp;md5=a7f94ee9b71a392dca3cd6c413722e51" target="_blank">Amazon Web Services, </a></u><u><a href="https://cts.businesswire.com/ct/CT?id=smartlink&amp;url=https%3A%2F%2Fionq.com%2Fnews%2Fionq-speeds-quantum-accelerated-drug-development-application-with&amp;esheet=54451094&amp;newsitemid=20260316477473&amp;lan=en-US&amp;anchor=and&amp;index=9&amp;md5=2bed627b388878763f41ffe0e4edb16c" target="_blank">and </a></u><u><a href="https://cts.businesswire.com/ct/CT?id=smartlink&amp;url=https%3A%2F%2Fionq.com%2Fnews%2Fionq-speeds-quantum-accelerated-drug-development-application-with&amp;esheet=54451094&amp;newsitemid=20260316477473&amp;lan=en-US&amp;anchor=AstraZeneca&amp;index=10&amp;md5=757c1f2c2ec94cf3982700106122164f" target="_blank">AstraZeneca</a></u> achieve 20x performance results and accelerate innovation in drug discovery, materials science, financial modeling, logistics, cybersecurity, and defense. In 2025, the company achieved 99.99% two-qubit gate fidelity, <u><a href="https://cts.businesswire.com/ct/CT?id=smartlink&amp;url=https%3A%2F%2Fionq.com%2Fnews%2Fionq-achieves-landmark-result-setting-new-world-record-in-quantum-computing&amp;esheet=54451094&amp;newsitemid=20260316477473&amp;lan=en-US&amp;anchor=setting+a+world+record+in+quantum+computing+performance&amp;index=11&amp;md5=32e9cb88afbd439026a352666cc72c91" target="_blank">setting a world record in quantum computing performance</a></u>.<br><br>Headquartered in College Park, Maryland, IonQ has operations in California, Colorado, Massachusetts, Tennessee, Washington, Italy, South Korea, Sweden, Switzerland, Canada, and the United Kingdom. Our quantum computing services are available through all major cloud providers, while we also meet the needs of networking and sensing customers across land, sea, air, and space. IonQ is making quantum platforms more accessible and impactful than ever before. &nbsp;</p></div><p><strong>Location:</strong> This role is based onsite in Geneva, Switzerland.<br><strong>Travel:</strong>&nbsp;<strong><br>Job ID:</strong> 1919&nbsp;</p> <p><strong>The Role:&nbsp;<br></strong></p> <p>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.</p> <p><strong>Responsibilities</strong>:</p> <p>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 i

Skills