Senior CNO Developer

Company: MANTECH
Location: Harmans
Posted on: March 22, 2026

Job Description:

MANTECH seeks an experience and mission focused Senior CNO Developer to join our team in Hanover, MD. In this role, you will contribute to the development of mission-critical cyber capabilities and lead efforts in advanced Computer Network Operations (CNO) and drive technical excellence in CNO development. You’ll be part of a dynamic team working on next-generation solutions that safeguard national security systems. Responsibilities include but are not limited to: Designing and developing new hardware- or software-based Computer Network Operations (CNO) capabilities Managing the design, development, documentation, testing, and debugging of software applications and systems Design and develop end-to-end data flow and tasking for CNO tools developed Applying expert knowledge of network and security concepts to support capability development Communicating status updates and technical progress to leadership and stakeholders Ensuring software quality and compliance with development standards Minimum Qualifications: BS degree in a technical discipline and 8 years of technical work experience, or MS Degree in a technical discipline and 6 years of technical work experience, or High school diploma and 12 years of technical work experience Experience in Python and C/C++ programming languages Experience with troubleshooting and debugging Experience with low-level system internals across one or more platforms (e.g., Windows, Unix, Mobile, or network devices) Experience with networking protocols (TCP/IP) and socket-level programming Experience with developing CNO capabilities Experience leading technical CNO solutions Preferred Qualifications: Experience in software analysis or reverse engineering Experience with assembly language programming Experience with unit testing frameworks and practices Experience using Atlassian tools (JIRA, Confluence, Crucible) Clearance Requirements: Must have a current/active TS/SCI w/Polygraph security clearance and be willing and able to obtain another polygraph prior to start, if required Physical Requirements: Must be able to remain in a stationary position at least 50% of the time.

Keywords: MANTECH, Rockville , Senior CNO Developer, IT / Software / Systems , Harmans, Maryland

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