Staff Cryptography Engineer: Post-Quantum Security Lead

United States Digital Space LLC; United States; Remote; USD 140,000 - 210,000; Full time

Job summary

United States Digital Space LLC is seeking a Staff Cryptography Engineer to lead enterprise readiness for post-quantum cryptography and crypto-agility. You will build and govern cryptographic inventories, collaborate with security, engineering, and product teams, and drive strategic cryptographic initiatives across the organization.

Ideal candidates bring deep applied cryptography expertise, strong architectural judgment, and the ability to translate complex crypto concepts into actionable

Qualifications

• 8+ years of experience in security engineering, product security, applied cryptography, or security architecture.
• Deep hands-on expertise in applied cryptography and cryptographic protocols for enterprise systems.
• Experience with post-quantum cryptography, crypto-agility, or cryptographic migration planning.
• Experience assessing cryptographic controls in production environments and cloud integrations.
• Strong ability to explain complex cryptographic concepts to diverse stakeholders.

Responsibilities

• Lead efforts to assess and improve enterprise cryptographic posture, with a focus on post-quantum preparedness.
• Build and maintain an inventory of cryptographic assets (keys, certificates, algorithms, protocols, libraries).
• Partner with product, engineering, and security teams to prioritize remediation or migration needs.
• Provide guidance on SSL/TLS, PKI, key management, encryption, and secure protocol usage.
• Define cryptographic standards, design patterns, and implementation guidance for teams.
• Review architectures to identify cryptographic risks and propose secure design alternatives.
• Drive cross-functional execution with documented ownership, milestones, and decisions.

Skills

Applied cryptography

SSL/TLS / PKI

Cryptographic inventory management

Cloud security

HSMs / KMS

Stakeholder communication

Education

Bachelor’s degree in CS or related field

Tools

HSMs

KMS

PKI platforms

Job description

United States Digital Space LLC is seeking a Staff Cryptography Engineer to lead enterprise readiness for post-quantum cryptography and crypto-agility. You will build and govern cryptographic inventories, collaborate with security, engineering, and product teams, and drive strategic cryptographic initiatives across the organization.

Ideal candidates bring deep applied cryptography expertise, strong architectural judgment, and the ability to translate complex crypto concepts into actionable