Senior System Administrator - Military veterans preferred

ManTech (


  full-time   employee

United States

All ManTech employees will need to meet the requirements set forth in Executive Order 14042 and the Safer Federal Workforce Task Force Guidance requiring all covered contractor personnel to be fully vaccinated against COVID-19.

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.

ManTech is seeking a motivated, mission- oriented Senior System Administrator in the Chantilly, VA area to provide unparalleled support to our customer. Positions within this large intelligence community program will cover the full life-cycle of development, enhancements and maintenance of a suite of critical customer applications and infrastructure across the development, test/staging, and production environments.  The program offers many opportunities for career growth and variety from technical experiences to team lead and management opportunities.

Responsibilities include, but are not limited to:

  • Maintain data files and control procedures for a system of networked computers or for a single group of microcomputers linked to a host workstation, or mainframe

  • Maintain system security and data integrity

  • Assign passwords and monitor use of resources, back up files as required and work with management to define requests for information Recognized as an expert within the company

  • Anticipates internal and or external business challenges, vendor and/or regulatory issues; recommends process, product or service improvements

  • Solves unique and complex problems that have a broad impact on the business

  • Progression to this level is restricted on the basis of business requirements

  • Is a company subject matter expert in their particular discipline

  • Anticipates business, vendor and/or regulatory changes; recommends product, process, or service improvements

  • Leads projects with notable risk and complexity; develops the strategy for project execution

  • Solves unique and complex problems with broad impact on the business; requires conceptual and innovative thinking to develop solutions

  • Impacts the achievement of customer, operational, project or service objectives by setting the direction and allocating resources; works within division objectives

  • Communicates complex concepts, anticipates potential objections, and persuades senior executives to adopt a different point of view

Basic Qualifications:

  • Experience with administering Windows and Linux operating systems.  

  • Security Plus certification or equivalent.

Minimum Education Required:

·         Bachelor's Degree; OR Associate's Degree and 2 years' experience is acceptable in lieu of Bachelor's degree; OR High School and 4 years' experience is acceptable in lieu of Bachelor's degree.

· 9 years' experience desired / 4 years' experience credit allowed for PhD degree / 2 years' experience credit allowed for Master's degree

Preferred Qualifications:

  • Experience with cloud environments (AWS - C2S), including VPC configurations. 

  • Experience with Oracle, MS SQL, Ansible, Puppet, Docker, Tomcat, Tuxedo, Weblogic, Git, Apache Http Server, Momentum (or other ERP system), Cognos, Certent DCM. 

  • Experience with managing PKI infrastructure. 

Security Clearance Requirements:

Current TS/SCI clearance with Polygraph

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.

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