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# Senior CNO Developer

- **Company:** Mantech International Corporation
- **Location:** Annapolis Junction, MD, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Microsoft Windows, Apple IOS, Apple Mac Systems, Unit Testing, Bash Shell, C++ (Programming Language), CMake, Linux, Cryptographic Protocols, Make (Software), Python (Programming Language), Windows PowerShell, Software Engineering, Scripting, Containerization, Integration Tests, Information Technology, Build Tools, Code Restructuring, Multiplatform, Data Pipelines, Docker
- **Published:** July 7, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9016134/senior-cno-developer

## About the Role

* Bachelor's Degree and 9+ years of experience OR High School Diploma/GED and 13+ years of experience OR Associate's degree and 11+ years of experience OR Master's Degree and 7+ years, OR a PhD with 5+ years of progressively responsible experience.
 * 3+ years software development experience, preferably in offensive / defensive cyberspace operations
 * Expert proficiency in compiled languages (C, C++, Rust, or Go)
 * Strong proficiency in scripting languages (Python, PowerShell, Bash)
 * Demonstrated experience developing capabilities for Windows and Linux target environments
 * Understanding of exploitation techniques and post-exploitation workflows
 * Familiarity with operational security considerations in capability development (evasion, anti-forensics, attribution)

Preferred Qualifications:

 * Experience developing capabilities for MacOS, mobile (iOS, Android), or embedded platforms
 * Knowledge of containerization and capability packaging (Docker)
 * Understanding of encryption protocols and cryptographic implementations
 * Experience with cross-platform development and build systems (CMake, Makefile)
 * Bachelor's Degree in Computer Science, Software Engineering, or related technical field (or equivalent experience). Previous work supporting CNO / OC missions

Clearance Requirements:

 * An active TS/SCI with Polygraph is required.
 * Must be a U.S. citizen.

Physical Requirements:

 * Must be able to remain in a stationary position 50% of the time.

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

## Description

* Develop custom cyberspace capabilities based on operational requirements and vulnerability research findings
 * Write, test, and maintain code for operational tools, exploits, post-exploitation frameworks, and automation systems, implementing operational security (OPSEC) controls in capability design including anti-analysis, evasion, and attribution management
 * Collaborate with vulnerability researchers to weaponize discovered vulnerabilities into operational capabilities and integrate capabilities with existing operational infrastructure, data pipelines, and deployment systems
 * Conduct unit testing, integration testing, and operational validation of developed capabilities and work with infrastructure developers to ensure capabilities deploy reliably across cloud and traditional environments
 * Refactor and maintain legacy capabilities to address target environment changes and operational feedback
 * Document capability functionality, usage, limitations, and OPSEC considerations for operators
 * Participate in operational readiness exercises and capability demonstrations


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