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# Cryptographic Software Engineer

- **Company:** Mantech International Corporation
- **Location:** Linthicum Heights, MD, United States
- **Contract:** Permanent contract
- **Skills:** C++ (Programming Language), Cipher, Cyber Security, Computer Networks, Software Design Patterns, Key Management, Public Key Infrastructure, Software Engineering, TCP/IP, System-level Testing, Deployment Automation
- **Published:** October 31, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=18895443c8dd353c

## About the Role

* Bachelor's Degree in technical discipline and 14+ years of software and/or security engineering experience (or 18+ years without a degree).
 * Proficiency in systems-level programming languages, specifically C, C++, or Rust, for high-assurance cryptographic software development.

Preferred Qualifications:

 * Experience with high-grade network encryptors, Key Management Infrastructure, and secure key distribution protocols.
 * Direct background supporting IC or DoD cryptographic engineering, evaluation, or system certification initiatives.

Clearance Requirements:

 * Active TS/SCI with Polygraph.

Physical Requirements:

 * Must be able to remain in a stationary position 50%.
 * Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
 * Frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations.

## Description

* Architect robust cryptographic software using functional and multi-paradigm design patterns, validated by comprehensive unit, integration, and system-level test suites.
 * Develop cross-platform desktop and server applications, leveraging containerization, automated deployment pipelines, and low-level network tools.
 * Implement cryptographic primitives and secure protocols (e.g., PKI, symmetric/asymmetric ciphers, cryptographic hashing, and low-level TCP/IP stacks) into production systems.
 * Deliver cryptographic solutions and cybersecurity analysis to strengthen security posture, testing, and certification for Intelligence Community (IC) deployments.
 * Engineer high-assurance data protection systems and secure computing architectures to safeguard critical national security infrastructure.