Washington, District Of Columbia

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

ManTech is seeking a motivated, career and customer-oriented Computer Network Defense (CND) Systems Engineer to support an Intelligence Community (IC) customer in Washington, DC.  Candidate will support new requirements gathering, evaluate new requirements, perform new capability analysis, new technology and vendor research, complete analysis of alternatives, Lab build-out design and testing, perform proof-of-concept designs and tests, and provide detailed reports with findings and recommendations going forward.

Responsibilities include, but are not limited to:

  • Provide cyber security services for networks

  • Analyze threat intelligence, correlating actionable security events, and reviewing network traffic alerts to identify compromises in DoD customer networks or hosts.

  • Review DoD and open-source intelligence for threats

  • Utilize alerts from end points, Intrusion Detection Systems (IDS)/Intrusion Prevention Systems (IPS), netflow, and custom sensors to identify compromises on customer networks/endpoints

  • Reviewing log files, pivot between data sets, and providing evidence for incident investigations.

  • Identify Indicators of Compromise (IOCs) and integrating those into sensors and Security Information and Event Management systems (SIEMs)

  • Triaging alerts to identify malicious actors on custom

  • Collaborate with technical leads and team members to ensure successful delivery of projects

  • Minimal local travel may be required between government customer site (Washington, DC) and contractor site (Springfield, VA)

Basic Qualifications:

  • Bachelor’s Degree in Computer Engineering, Computer Science or other closely related IT discipline and 2 or more years of relevant experience

  • Possess IAT Level II

  • Familiarity and/or experience protecting network environments against insider threat

  • Experience with DISA STIGs

  • Experience analyzing high volumes of logs, network data (e.g., Netflow, Full Packet Capture), and other attack artifacts in support of incident investigations

Preferred Qualifications:

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

  • Familiarity with Splunk

  • Understanding of common vulnerability management tools

  • CND experience (Protect, Detect, Respond and Sustain) within a Computer Incident Response organization

  • IA System Architects and Engineers (IASAE) Level III certification

  • Possess Cyber Security Service Provider – Information Security (CSSP-IS) certification

  • Possess IAT Level III certification

Security Clearance Requirements:

  • TS/SCI eligible and obtain a Counterintelligence (CSP) polygraph. (Current TS/SCI clearance (or active TS with SCI eligibility) with a Polygraph or ability to obtain a Polygraph before starting employment).

Physical Requirements:

  • Must be able to remain in a stationary position 50%

  • 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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