Director, Cryptographic Architecture & Engineering

American Express; Sunnyvale (CA); On-site; USD 180,000 - 260,000; Full time

Job summary

American Express is seeking a senior Cryptographic Architect to shape enterprise cryptography, lead PQC readiness, and drive crypto‑agility across payment and data platforms. You will work with engineering and security teams to implement scalable, secure cryptographic solutions in cloud and on‑prem environments.

Join a Fortune 100 company that values innovation, governance, and rigorous security practices while enabling trusted experiences for customers globally.

Qualifications

• Experience in cryptographic engineering within large-scale tech environments.
• Deep knowledge of symmetric/asymmetric cryptography, TLS, and digital signatures.
• Experience with HSMs, PKI, key lifecycle management.
• Ability to translate security requirements into architectures and reusable patterns.
• Software engineering capability to develop prototypes and automation.

Responsibilities

• Define enterprise cryptographic architecture across environments.
• Lead post‑quantum readiness and crypto‑agility initiatives.
• Provide architecture leadership for payment cryptography and PCI requirements.
• Design modern approaches for encryption, key management, PKI and certificates.
• Translate security standards into code‑level artifacts and guardrails.
• Collaborate with engineering to prototype and implement cryptographic solutions.
• Integrate cryptographic requirements into SDLC and operate readiness.

Skills

Cryptographic engineering

Security architecture

Applied cryptography

Encryption protocols

HSMs and PKI

Cloud KMS

Code/architecture‑as‑code

Tools

HSMs

PKI systems

Cloud KMS

Job description

American Express is seeking a senior Cryptographic Architect to shape enterprise cryptography, lead PQC readiness, and drive crypto‑agility across payment and data platforms. You will work with engineering and security teams to implement scalable, secure cryptographic solutions in cloud and on‑prem environments.

Join a Fortune 100 company that values innovation, governance, and rigorous security practices while enabling trusted experiences for customers globally.