Principal CNO Developer - Military veterans preferred

ManTech (


  full-time   employee

United States

Secure our Nation, Ignite your Future

Become an integral part of a diverse team in the Mission, Cyber and Intelligence Solutions (MCIS) Group.  Currently, ManTech is seeking a motivated, mission oriented Principal CNO Developer in the Herndon, VA area, with strong Customer relationships.  At ManTech, you will help protect our national security while working on innovative projects that offer opportunities for advancement.

The Innovative Security Solutions (ISS) Division provides cyber solutions to a wide range of Defense and Intelligence Community customers. This division consists of a team of technical leaders that deliver advanced technical solutions to government organizations.  Our customers have high standards, are technically adept, and use our products daily to support their mission of protecting national security. Our contributions to our customer’s success is driving our growth.

A qualified candidate will be responsible for the following duties and responsibilities, but are not limited to:

  • Design and develop software solutions that are actively used in the security arena.
  • Write software in C, Python, and assembly language.
  • Work and collaborate within an agile team.
  • Engage with the customer or representatives to fully understand the desired functionality and strive to develop the best technical solution.      
  • Reverse engineer system components as necessary.
  • Assist in the training of less experienced software development staff.
  • Research and maintain proficiency in tools, techniques, countermeasures, and trends in computer network vulnerabilities, data hiding, and network security and encryption. 

Security Clearance Requirement:

Must be US Citizen with the ability to obtain/maintain a Secret clearance or higher is required. Current/active Secret or higher is highly preferred. 

Position Qualifications:

  • Bachelor's degree or equivalent combination of education and experience, and 7+ years of relevant experience. 
  • Bachelor’s degree in one of the following disciplines:  Computer Engineering, Computer Science, Math, Software Engineering or a related field preferred. 
  • A passion for low-level / embedded software development and engineering.  
  • Strong grasp of operating system fundamentals, including interrupts, threading, virtual memory, device drivers and memory management techniques.
  • Knowledge and understanding of operating system internals and the integration of code with the operating system kernel.
  • Experience with reverse engineering.
  • Experience in all phases of the software development lifecycle.
  • Experience with test driven development and test automation.
  • Experience with continuous integration.

ManTech International Corporation, as well as its subsidiaries proactively fulfills its role as an equal opportunity employer. We do not discriminate against any employee or applicant for employment because of race, color, sex, religion, age, sexual orientation, gender identity and expression, national origin, marital status, physical or mental disability, status as a Disabled Veteran, Recently Separated Veteran, Active Duty Wartime or Campaign Badge Veteran, Armed Forces Services Medal, or any other characteristic protected by law.

If you require a reasonable accommodation to apply for a position with ManTech through its online applicant system, please contact ManTech's Corporate EEO Department at (703) 218-6000. ManTech is an affirmative action/equal opportunity employer - minorities, females, disabled and protected veterans are urged to apply. ManTech's utilization of any external recruitment or job placement agency is predicated upon its full compliance with our equal opportunity/affirmative action policies. ManTech does not accept resumes from unsolicited recruiting firms. We pay no fees for unsolicited services.

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