Windows CNO Developer

M9 Solutions•Herndon, VA

8d•Onsite

About The Position

M9 Solutions is seeking a Windows CNO Developer to work on-site in support of a government contract for a client located in Herndon, VA. An active TS/SCI with Full Scope Polygraph clearance is required. The role involves designing, developing, and maintaining CNO/CNE capabilities targeting Windows systems, implementing low-level functionality in C, interacting with Windows internals, and debugging, testing, and hardening capabilities for operational use. Collaboration with operators, analysts, and fellow developers is key, as is documenting designs and implementations for secure, classified environments.

Requirements

Active TS/SCI with Full Scope Polygraph clearance.
3+ years of experience in CNO/CNE development, exploit development, or related offensive cyber work focused on Windows.
Strong C programming skills (low-level/system-level development).
Solid understanding of Windows internals (memory management, APIs, process injection, etc.).
Experience developing, debugging, and troubleshooting in Windows environments.
Experience with reverse engineering tools (e.g., IDA, Ghidra, x64dbg).
Background in vulnerability research, exploit development, or malware development.
Scripting experience (Python or similar) for tooling and automation.

Responsibilities

Design, develop, and maintain CNO/CNE capabilities targeting Windows systems.
Implement low-level functionality in C, interacting with Windows internals (WinAPI, processes/threads, memory management).
Debug, test, and harden capabilities for use in real-world operational environments.
Collaborate with operators, analysts, and fellow developers to refine and extend capabilities based on mission needs.
Document designs and implementations in a manner appropriate for secure, classified environments.