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Senior CNO Software Engineer with Security Clearance

MANTECHHanover, MD🇺🇸United StatesPosted Oct 23, 2026

Why this role stands out

Leverage your expertise in CNO software engineering and a TS/SCI w/Polygraph clearance to develop cutting-edge national security solutions in a hybrid environment. This role offers significant opportunities for technical growth and impact, perfect for a driven engineer passionate about solving complex challenges within a collaborative team. Apply today to contribute to critical missions and advance your career.

Quick overview

SeniorityMid Senior
Employment typeEmployee
Work modeHybrid
LocationHanover, MD, United States
Posted3 days ago
TCP/IPAssemblyConfluenceC++PythonJiraLinux

Job description

MANTECH seeks a highly technical and mission-focused Senior CNO Software Engineer to join our team in Hanover, MD. In this role, you will develop advanced CNO capabilities that directly support national security. You'll work in a collaborative environment focused on solving complex technical challenges in support of our customer's most critical missions. Responsibilities include but are not limited to:

  • Design and develop new hardware- or software-based CNO capabilities
  • Manage the design, development, documentation, testing, and debugging of applications software and systems
  • Apply expert knowledge of security concepts and network technologies
  • Develop data queries for existing or proposed databases or data repositories
  • Develop or implement algorithms to meet or exceed system performance and functional standards Minimum Qualifications:
  • BS Degree in a technical discipline and 14+ years of technical work experience or High School Diploma and 18+ years of technical work experience
  • Experience in Python or C/C++ programming
  • Experience with troubleshooting and debugging complex systems
  • 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

Preferred Qualifications

  • Experience with programming in assembly languages
  • Experience in software analysis or reverse engineering
  • 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 50% of the time

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