Patuxent River, Maryland

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 Corporation, you’ll help protect our national security while working on innovative projects that offer opportunities for advancement.

Currently, ManTech is seeking a motivated, career and customer-oriented Senior LINUX Engineer to join our team in Pax River, MD.

Responsibilities include, but are not limited to:

  • Maintain LINUX and Windows networks, servers, and client workstations

  • Install, configure, maintain, and administer Linux and Windows networks, network devices, client machines, and servers

  • Implement and support application packages

  • Procure und repair components necessary to maintain network and information technology systems

  • Conduct systems analysis and summarize the data collected in a technical document written in a manner that is understood and usable by the decision makers

  • Maintain system/network backups

  • Support/recognize/examine a potential security violation, take appropriate action to report the incident as required by regulation, and mitigates any adverse impact and preserves evidence

  • Apply instructions and pre-established guideline to perform IA tasks within the computing environment

  • Provide user IA support for computer environment systems, peripherals, and applications

  • Support, monitor, test, and troubleshoot hardware and software problems pertaining to their computing environment

  • Apply computer environment specific IA program requirements to identify areas of weakness

  • Apply appropriate computer environment access controls

  • Install and operate the Network and computer systems in a test configuration manner that does not alter the program code or compromise security safeguards

  • Conduct tests of IA safeguards for computing environment system in accordance with SSP implementation plans and SOPs

  • Apply established cybersecurity procedures and safeguards and comply with responsibilities assignment

  • Develop and implement access control lists on switches and other network devices

  • Comply with system termination procedures and incident reporting requirements related to potential computing environment security incidents or actual breaches

  • Implement applicable patches; including IAVAs, IAVBs and IATAs for computing environment COTS products

  • Understand and implement technical vulnerability corrections (i.e. workarounds, mitigation and/or remediation)

  • Coordinate Assess and Authorization activities with Information System Security Officer/Manager

  • Ability to perform penetration tests and vulnerability assessment’s using ACAS vulnerability scanner, Defense Information Systems Agency (DlSA) STIGs and Security Content Automation Protocol (SCAP)

  • Support Security Test & Evaluation or Validation Tests (Part of Assess and Authorization Process) 

Basic Qualifications:

  • Bachelor’s degree in an IT related field or 5 years of IT related experience

  • Current DODD 8140/8570 IAT II certification (or higher) required (e.g., CCNA Security, Security+CE, GICSP, GSEC, SSCP, etc) or ability to obtain in 6 months of employment with MT’s sponsorship

  • MCSE or another relevant current Operating System certification

  • Strong security awareness

  • Must be knowledgeable of the Department of Defense (DoD) information system security compliance and implementation guidance.  Specifically, NIST Risk Management Framework (RMF), DISA Security Technical Implementation Guides (STIG)

  • RHEL Linux experience

Security Clearance Requirements:

  • Active DoD TS clearance based upon a SSBI completed within the last 6 years

Physical Requirements:

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

  • Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.

  • Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine and computer printer.

  • Often positions self to maintain computers in the lab, including under the desks and in the server closet.

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

  • May be asked to move Audio/Visual or Computer equipment

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.

Patuxent River, Maryland

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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