Washington, District Of Columbia

Secure our Nation, Ignite your Future

ManTech is seeking a motivated, mission oriented Cyber Defense Counter Measure Expert in the National Capitol Region (NCR) area to provide unparalleled support to our customer.  The Cyber Defense Counter Measure Expert will perform assessments of systems and networks and identify where those systems/networks deviate from acceptable configurations or policies. The Cyber Defense Counter Measure Expert will implement and conduct engineering activities in accordance with the organization's relevant approved processes, technical operations, and strategic vision. The position is responsible for the technical management, monitoring, maintenance, and troubleshooting, of enterprise-wide monitoring systems, applications and related infrastructure; ensuring that any issues that may adversely impact the confidentiality, integrity or availability of computing resources are identified, properly alerted and promptly resolved.  

Responsibilities include, but are not limited to:

  • Serve as the principle technical advisor and subject matter expert for Cyber Network Defense (CND) countermeasure services.
  • Expertise in enterprise defensive countermeasures and the incident detection process, particularly incident indicators, and countermeasures.
  • Understanding of the utilization, configuration, and implementation of industry standard cyber defense capabilities including but not limited to web content filters, email security capabilities, Intrusion Detection System (IDS), Intrusion Prevention System (IPS), Host Based Security System (HBSS), Security Information and Event Management (SEIM), Domain Name System (DNS) security practices, advanced log analysis, network monitoring, network flow analysis, packet capture analysis, network proxies, firewalls, anti-virus capabilities, Linux/UNIX command line, and access control lists.
  • Knowledge of the lifecycle of network threats, attack vectors, and methods of exploitation
  • Expertise with the incident response process in accordance with Chairman of the Joint Chiefs of Staff Manual (CJCSM) 6510.01 and other applicable DoD/IC directives and policies
  • In depth understanding of the incident response processes and procedures to aid in the facilitation of comprehensive procedures for collaboration and Implementation.

Basic Qualifications:

  • Bachelor’s degree and at least nine (9) years’ experience in knowledge management, or similar field.
  • Must meet DoD 8570/8140 IAT Level II certification requirements consisting of one of the following: CCNA Security, CySA+ (previously listed as CSA+), GICSP, GSEC, Security+ CE, CND, or SSCP.
  • Practical experience in infrastructure administration (Linux, networking, Windows, firewalls).
  • Must possess well-developed verbal and written communication skills.

Preferred Qualifications:

  • Splunk training and/or certifications.
  • Experience performing the role 8570.01-M, Computer Network Defense Infrastructure Support (CND-IS).
  • CND-IS (Infrastructure Support) certification.
  • IAT Level III Certification (CASP+ CE; CCNP Security; CISA; CISSP [or Associate]; GCED; GCIH, CCSP).
  • Host Based Security System (HBSS) training or experience.

Security Clearance Requirements:

  • Current TS/SCI clearance with a Polygraph or ability to obtain a Polygraph before starting employment.

Physical Requirements:

  • Must be able to remain in a stationary position 50%.
  • Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer.
  • 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.


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 http://www.mantech.com/careers/Pages/careers.aspx as a result of your disability. To request an accommodation please click careers@mantech.com and provide your name and contact information.

Washington, District Of Columbia

ManTech was founded in 1968 to provide advanced technological services to the United States government. We began with a single contract with the U.S. Navy to develop war-gaming models for the submarine community. Over the years, our government's technology needs have increased dramatically in scope and sophistication, and we have grown to meet that challenge.


For more than 4 decades, we kept a careful eye on where emerging technologies were taking the government, and we developed the resources to master those technologies—by staying close to our customers and anticipating their needs, hiring talented professionals to propel us into the future, and acquiring companies with proven capabilities.


Today, we are a multi-billion-dollar public company that provides the innovation, adaptability, and critical thinking our government needs for success in defense, intelligence, law enforcement, science, administration, health, and other fields—throughout the nation and in many countries throughout the world. We are now applying the lessons learned in the unforgiving arena of national security to help the private sector protect networks and critical information.

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