Cryptography Engineer

Meet Yubico

the creator of the most secure passkeys and leading provider of hardware authentication security keys. Our company’s mission is to make secure login easy and available for everyone. Yubico was founded in 2007 by Stina and Jakob Ehrensvard, and is public on Nasdaq Stockholm Main Market: YUBICO. Our customers include Fortune 500 companies, hundreds of government agencies and millions of individuals in over 160 countries that rely on Yubico technology to secure access to computers, online services and mobile apps. We are a global company with a strong company culture and employees located in over 14 countries. Yubico’s headquarters are based in Stockholm, Sweden and Santa Clara, CA. Aligned with our mission to make the internet more secure for everyone, Yubico donates YubiKeys to organizations helping at-risk individuals through our philanthropic initiative, Secure it Forward.

At Yubico, we offer:

Yubico Values: We work to ensure that our employees have an open space to have their voices amplified to create a workplace where everyone feels like they belong. Aligned with this, our employees have created some pretty cool Employee Resource Groups: YubiPride, YubiBIPOC, YubiSustainability and YubiWomen. Additionally, Yubico donates YubiKeys to organizations in need all over the world (you can read more about our work here).

Social Connection: Relationships and connectedness matter, and we love spending time with our team! Our virtual workspace keeps us connected day-to-day whether it's through Yubico celebrating wins or our buzzing Slack communities. Check out our Life at Yubico Page on LinkedIn and our awards here.

Tasks & Responsibilities

• Implement, maintain and optimize cryptographic algorithms and primitives (e.g. encryption, hashing, digital signatures, key exchanges) that run on YubiKeys and YubiHSMs
• Follow research about classical algorithms (RSA, ECC, etc.), as well as Post Quantum Cryptography algorithms (ML-DSA, ML-KEM, etc.)

Basic Qualifications

• Ability to follow research in cryptography
• Good understanding of classical (a)symmetric cryptography and PQC
• Knowledge of side-channel attacks (EM, power and timing analysis etc.) and mitigations against them
• Disciplined approach in writing correct and highly efficient code

Preferred Qualifications

• Low level programming experience (C and Assembly)
• Experience with embedded architectures
• Ability to adapt and tune algorithms on resource constrained environments
• Knowledge around fault injection attacks
• Hands‑on experience with lab equipment such as oscilloscopes, logic analyzers and similar

#LI-Hybrid

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We are an equal opportunity employer, we value diversity and uphold an inclusive environment where all people feel that they are equally respected and valued. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity or expression, age, marital status, religion, national origin, disability, protected Veteran status or any other characteristic protected by law. We'd love to learn about what you can add to our diverse team.

Yubico does not accept agency resumes or referrals so please do not send them to our careers staff or employees. Yubico is not responsible for any fees related to unsolicited resumes or referrals.

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