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Windows CNO Developer x86​/x64 Assembly Herndon, Virginia Clearance TS​/SCI

Job in Herndon, Fairfax County, Virginia, 22070, USA
Listing for: The Josef Group
Full Time position
Listed on 2025-12-14
Job specializations:
  • IT/Tech
    Cybersecurity
Job Description & How to Apply Below

Windows CNO Developer

TS/SCI Clearance

230K-315K

Key Responsibilities
  • Research, design, and develop CNO tools and capabilities targeting Windows platforms

  • Perform reverse engineering of binaries to analyze vulnerabilities and system behavior

  • Develop and maintain kernel and user-mode code in C, C++, and assembly

  • Integrate custom tools into operational frameworks

  • Support deployment, testing, and documentation of cyber capabilities

  • Collaborate with analysts, engineers, and operators to meet mission requirements

Required Qualifications
  • Active TS/SCI clearance

  • Minimum 5 years of experience in software development or reverse engineering

  • Proficiency in C/C++, Python, and x86/x64 Assembly

  • In-depth understanding of Windows internals, including kernel mode development

  • Experience with reverse engineering tools such as IDA Pro, Ghidra, Win Dbg, or similar

  • Familiarity with networking protocols (TCP/IP, HTTP/S, DNS)

  • Experience with Git or other version control systems

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