Cyber Security Developer/Tester - Military veterans preferred

ManTech (


  full-time   employee

District of Columbia
United States

Where applicable, confirmation that you meet customer requirements for facility access which may include proof of vaccination and/or attestation and testing, unless an accommodation has been approved.

Secure our Nation, Ignite your Future

Become an integral part of a diverse team while working at an Industry Leading Organization, where our employees come first. At ManTech International, you’ll help protect our national security while working on innovative projects that offer opportunities for advancement. 

We take National Security seriously. We focus on strategic and unified work to strengthen the security, resiliency, and workforce of the cyber ecosphere. This is your opportunity to join a team that is making an impact on protecting National interests including state, local, tribal and territorial Governments and critical infrastructure.


Currently, ManTech is seeking a motivated, mission and customer oriented Cyber Security Developer/Tester to join our team in the Washington D.C. area.  


Responsibilities include but are not limited to: 

  • Resolve customer requirements and propose solutions for software modifications and enhancements

  • Write clean, maintainable code following best practices (unit testing, source control, continuous integration, automation, design patterns, etc)

  • Program and debug low-level code and troubleshoot problems

  • Collaborate with other developers, testers, and system engineers to ensure quality product deliverables

  • Responsible for determining and developing innovative approaches for addressing cyber security risks associated with application development

  • Responsible for the development and use of automated software testing frameworks for large scale security-critical software testing

  • Ensure low-level firmware/software development pushes the bounds of the originally specified intent of the hardware/software

  • Participate in and/or direct deliverables of projects through all aspects of the software development lifecycle including scope and work estimation, architecture and design, coding, and unit testing

  • Develop software system validation and testing methods

  • Develop and integrate custom developed software solutions to leverage automated deployment technologies

  • Analyze specifications and design documentations, test strategies, test plans, and user acceptance criteria

  • Create and run automated smoke testing, positive and negative tests, functional tests, front-end and back-end test scenarios 


Basic Qualifications: 

  • Bachelor’s degree in Computer Science or Engineering with 5 or more years of related experience  

  • Security+, SSCP, or CCNA-Security certification

  • Experience with source control and code repository tools

  • In-depth experience in the software development lifecycle, with experience delivering toolsets/practices

  • Direct experience utilizing software testing performance tools

  • Experience with SAFe Agile Scrum Software Development methodologies with a cross-functional team approach

Preferred Qualifications: 

  • Master’s degree in Computer Science or Engineering with 3 or more years of related experience  

  • SAFe certification in one or more of the following. Certified SAFe Agilist, DevOps, or Software Engineer 

  • Certified Information Systems Security Professional (CISSP) certification 


Clearance Requirements: 

  • Top Secret w/SCI 


Physical Requirements: 

  • Must be able to be in a stationary position more than 50% of the time 

  • Must be able to communicate, converse, and exchange information with peers and senior personnel

  • Constantly operates a computer and other office productivity machinery, such as a computer

  • The person in this position frequently communicates with co-workers, management, and customers, which may involve delivering presentations. Must be able to exchange accurate information in these situations 

The person in this position needs to occasionally move about inside the office to access file cabinets, office machinery, etc

For all positions requiring access to technology/software source code that is subject to export control laws, employment with the company is contingent on either verifying U.S.-person status or obtaining any necessary license. The applicant will be required to answer certain questions for export control purposes, and that information will be reviewed by compliance personnel to ensure compliance with federal law. ManTech may choose not to apply for a license for such individuals whose access to export-controlled technology or software source code may require authorization and may decline to proceed with an applicant on that basis alone.

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.

If you are a qualified individual with a disability or a disabled veteran, you have the right to request an accommodation if you are unable or limited in your ability to use or access as a result of your disability. To request an accommodation please click and provide your name and contact information.