Onlano
CybersecurityOnsite

CNO Engineer

GrammaTech - Company

Arlington, Arlington County, ๐Ÿ‡บ๐Ÿ‡ธ United StatesFull-time - Mid level (2-4 years)0 applicantsCloses Jun 14, 2026

Salary

USD 150,000 - 190,000 / year

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Job description

Role overview

GrammaTech seeks CNO Engineers to develop, analyze, and test mission-critical systems. Candidates will build software components, enhance tools, and collaborate on large-scale projects using C and Python. Requires active TS/SCI with Polygraph clearance.

Responsibilities include CNO development, analysis, and testing, as well as improving existing tooling for secure, scalable solutions.

Responsibilities

  • Perform CNO development, analysis, and testing for mission-critical systems
  • Design and build new software components using C and Python
  • Enhance existing tools and improve software performance
  • Collaborate with teams to deliver scalable solutions
  • Conduct testing and ensure software reliability

Requirements

  • Active TS/SCI with Polygraph clearance
  • Proficiency in C and Python programming
  • Experience in software development for cybersecurity applications
  • Strong analytical and problem-solving skills
  • Ability to work in a team environment

Benefits

  • Competitive salary and benefits package
  • Opportunities for professional growth and development
  • Collaborative and innovative work environment
  • Flexible work arrangements
  • Access to cutting-edge technology and tools

Keywords

CPythonTS/SCIPolygraphcybersecuritysoftware development