Chantilly, Virginia

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Secure our Nation, Ignite your Future

The corporate Information Assurance department of ManTech International Corporation is looking for a highly motivated, qualified professional to fill a senior Information Security Engineer position in the Chantilly, VA area.  A wide range of information security knowledge and skills are required.  The Security Engineer would lead the integration of on-premises security and cloud environments.  This position will support the security operations center (SOC) engineering team in performing a variety of duties.

Responsibilities include, but are not limited to:

  • Manage PAM solution including a credential vault, credential rotation, 3rd party API integrations, and mechanisms to manage privileged identities.
  • Significant knowledge of JSON and ability to write parsers for SIEM data normalization and ingestion via API calls (SOAP/REST).
  • Script writing and understanding of PowerShell, Python, or C#
  • IT/DevOps engineering experience and understanding of CI/CD concepts/tools (Azure DevOps, Jenkins, Visual Studio Team Services, GitHub, etc.).
  • Experience maintaining Elasticsearch based applications.
  • Familiar with Unix/Windows operating systems, security systems infrastructure, and security protocols (OAuth, SSH, SSO and SAML)
  • Write comprehensive documentation, standard operating procedures, and change requests
  • Building virtual machines and understanding virtual network architecture/design

Required Qualifications:

  • Hands-on experience in designing, upgrading, configuring, and maintaining a CyberArk Privileged Access Management solution
  • Experienced in most of this skill set, uphold professional standards, be a reliable self-starter with an intuitive willingness to learn, and can quickly adapt to a fast paced and dynamic environment for high impact, mission-critical network security operations. 
  • Associates in Computer Science, Information Systems/Engineering or a related scientific or technical discipline, or related experience in lieu of degree
  • Minimum of three years of experience supporting, maintaining, and upgrading CyberArk environment
  • Minimum of three years of experience implementing Cloud offerings and services from providers such as AWS and Microsoft Azure/O365, etc. Azure, or similar advanced professional Cloud certifications preferred
  • CyberArk Guardian or Sentry professional certification required.

Preferred Qualifications:

  • Experience with security technologies such as: ArcSight, Cisco Security, and multifactor authentication systems is a plus
  • Additional knowledge areas of value include: orchestration and automation technologies (Ansible, Puppet and Chef). 
  • Educational and/or IT certifications preferences include the following: CompTia Security+, EC-Council (CEH), GIAC, Microsoft Azure Security (AZ-500), Microsoft Security Operations (SC-200) and ISC2 (CISSP/CCSP).

Clearance Requirements:

  • Must be a US Citizen and must be eligible to attain a US government security clearance.

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.

Chantilly, Virginia

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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