Cryptography Subject Matter Expert

Merlin International Inc • Vienna, VA

22h • Remote

About The Position

We're seeking advanced technical leadership and expertise in cryptographic systems, standards, and implementations across Merlin’s Post-Quantum Cryptography (PQC) practice area. In this role, you will support the design, assessment, and optimization of cryptographic architectures and protocols within enterprise and mission environments. You will collaborate with internal engineering teams, government customers, and technology partners to ensure cryptographic solutions meet the highest standards of security, interoperability, and compliance.

Requirements

• Master’s degree plus industry experience in cryptography (5+ years) or Ph.D. degree in Computer Science, Mathematics or similar with an emphasis on Cryptography, Security and Privacy.
• Deep understanding of crypto primitives and how they combine.
• Deep understanding of cryptographic protocols.
• Good understanding of RSA, DH, ECC.
• Understanding or capability to learn PQC standardized schemes.
• Understanding of Countermeasures and Optimizations.
• Sound understanding of cryptographic standards and how they work and are applied.
• Experience working with GitExperience or understanding of working with SDKs.
• Capabilities to do crypto related code review.
• Record of peer-reviewed publications or technical contributions to the cryptography community.
• Excellent written and verbal communication skills, with the ability to convey complex technical topics clearly.
• U.S. citizenship and ability to obtain or hold a U.S. government security clearance.

Nice To Haves

• Experience with cryptographic optimization, countermeasure development, or hardware security modules (HSMs).
• Familiarity with applied cryptography in federal, defense, or regulated industry environments.
• Experience with the Commercial Solutions for Classified (CSfC) program, COMSEC, and related topics.
• Familiarity with Dept of War environments and systems.
• Experience collaborating across multi-disciplinary technical teams.

Responsibilities

• Serve as Merlin’s lead expert on applied cryptography, advising on the design, integration, and evaluation of cryptographic systems and components.
• Ability to map the lifecycle of cryptographic objects throughout technology environments.
• Provide deep technical insight on cryptographic primitives, protocols, key management, and security models used in federal and enterprise systems.
• Review cryptographic code, SDKs, and implementations to identify vulnerabilities, inefficiencies, and compliance gaps.
• Evaluate and guide adoption of Post-Quantum Cryptography (PQC) standardized schemes and related countermeasures.
• Knowledgeable off the usage of RSA, Diffie–Hellman (DH), Elliptic Curve Cryptography (ECC), and emerging algorithms to ensure performance, scalability, and resistance to known attacks.
• Interpret and apply cryptographic standards (e.g., FIPS 140-3, NIST SP 800-series) to customer architectures and Merlin technical solutions.
• Collaborate with Technical Practice Area leads, engineers, and product teams to develop validated reference architectures and implementation guides.
• Contribute to internal enablement and technical documentation to strengthen Merlin’s cryptography capabilities across teams.
• Support customer engagements through training and delivery by preparing technical briefings, risk assessments, and recommendations for secure cryptographic adoption.

Benefits

• Our wellness package provides access to an on-site gym and includes medical, dental, and vision insurance along with options for FSA and EAP.
• We offer 401(k) with employer match, unlimited PTO, and a culture respectful of the reality that not everything in one’s personal life is guaranteed to happen only after hours.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level