Principal Software Developer, CNO - Military veterans preferred

ManTech (


  full-time   employee

San Antonio
United States

Secure our Nation, Ignite your Future

Your Role:

  • Design and develop software solutions that are actively used in the security arena
  • Works and collaborates within an agile team, but owns the software feature or enhancement through completion
  • Engages with the customer or representatives to fully understand the desired functionality and strives to develop the best technical solution 
  • Expected to actively learn the environment in which the software solution will operate in order to articulate risks and constraints
  • Understands their technical strengths and weaknesses, and works well in isolation (with peer review) on areas of strength and seeks subject matter expertise in growth areas 
  • Has a strong understanding of software and Operating Systems fundamentals and feels comfortable applying knowledge toward development efforts on Windows, Linux, iOS, and Android systems
  • Demonstrates solid problem solving and debugging skills to determine the root cause of a software defect
  • Able to review and analyze technical documentation from Windows, Linux, iOS, Android, and other products to gain understanding for software solutions that interact with components within these systems

Your Qualifications:

  • 3-5+ years of experience with Python or a similar scripting language (Ruby, Perl) 
  • Windows internals and debugging
  • Strong C skills 
  • Experience in delivering quality products and involvement in all phases of the software development process: Idea, Design, Implementation, Delivery, and Support
  • Experience with the following items is a plus: C/C++, Assembly, Jenkins, Docker, Agile, Continuous Integration, TDD, Test Automation, Windows Administration, and Linux Administration.
  • Exhibit our core values: Passion, Capacity, and Humility.    
  • Passion for the customers and mission we serve 
  • Capacity to learn and grow into a technical leader 
  • Humility to learn from others, treat others with mutual respect, and satisfied without public recognition of work

Must be a U.S. Citizen and must be able to obtain a Secret government security clearance (current clearance desired but not required). 

Applicants with the appropriate skills but without a security clearance are encouraged to apply. 

If you are the right fit for the job, we will make it happen. Applicants will be subject to a government security background investigation.

Physical Requirements:

  • Must be able to remain in a stationary position at least 50% of the time
  • Frequently communicates with co-workers, management, and customers. May involve delivering presentations, must be able to exchange accurate information in these situations

#LI - CD1

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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