Cybersecurity Engineer - Principal
Posted Sep 25, 2026 · We last checked this listing on Oct 6, 2026
Likely interview questions for this role
Written from this job description, not a generic list. Each one notes what the interviewer is really checking.
About your past
Tell me about a cryptographic solution you designed and delivered in production.
What they are checking: Principal-level depth and real delivery experience, not only research knowledge.
How do you explain post-quantum risk to executives who see it as a distant problem?
What they are checking: Translating technical urgency into business terms that win support and funding.
What would you do
Where would you start a hybrid classical and post-quantum deployment, and why?
What they are checking: Risk-based prioritization, including harvest-now-decrypt-later exposure for long-lived data.
How would you handle a vendor product that has no post-quantum roadmap?
What they are checking: Third-party risk thinking and practical mitigation for systems the bank does not control.
About the work
What's your understanding of FIPS 203, 204 and 205, and where would each fit in a bank's environment?
What they are checking: Real knowledge of ML-KEM, ML-DSA and SLH-DSA and how they map to key exchange and signatures.
How would you build a cryptographic inventory across a bank with mainframes, APIs and cloud systems?
What they are checking: Practical first steps toward post-quantum migration, starting with knowing where cryptography lives.
What does NIST IR 8547 mean for our migration timeline?
What they are checking: Awareness of NIST's deprecation timeline for quantum-vulnerable algorithms and planning around it.
How would you design crypto agility into new systems so we can swap algorithms later?
What they are checking: Architectural thinking that avoids hard-coded algorithms and repeated rework.
What challenges do you expect when deploying post-quantum algorithms over existing networks and protocols?
What they are checking: Understanding of larger keys and signatures, performance and compatibility issues in practice.
What's your experience with mainframe cryptography, and what makes it different?
What they are checking: Familiarity with mainframe architecture, which the posting lists as useful.
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Practice this out loudThe full job description
As published by Huntington Bank.