Staff Systems Administrator - Military veterans preferred

ManTech (


  full-time   employee

District of Columbia
United States

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 System Administrator to join our team in Washington, DC. 

Responsibilities include, but are not limited to:

  • Provide tier 1, tier 2, and tier 3 system administration support to multiple WANs and LANs
  • Perform all required daily, weekly, monthly, annual O&M
  • Perform SOP documentation updates to support IT activities
  • Perform patching per patch management schedule
  • Collect metrics in ticketing system to ensure key metrics are met for system administration
  • Serve as primary tier 1 and phone support to customers' IT needs
  • Ensure secure baselines are applied to relevant workstations and servers
  • Create detailed requirements engineering and capability backlog.
  • Foster relationships with stakeholders to deliver state of the art customer service
  • Engineer, document, and deliver the information system solutions through all stages of SDLC
  • Diagnose and resolve the complex performance, security, and/or technical challenges related to the platforms listed below
  • Responsible for investigating and resolving operational problems in conjunction with other engineering and technical personnel
  • Provide IT Systems Admin support on a wide range of technologies, including: VMware, Windows Server 2012 R2, Sentris, Active Directory, SAN, Sentris 3, and PKI (two-factor authentication)
  • Other duties as assigned

Basic Qualifications:

  • Bachelor’s degree (in Computer Science, Engineering, Economics or Math) or equivalent job experience, and 2-4 years of related experience
  • DoD 8570 qualified; minimum Security+CE certification
  • IT certifications
  • Knowledge of latest Microsoft technology
  • Knowledge of latest VMware technology
  • Knowledge of SAN technology
  • Risk Management Framework (DCID 6/3 PL3) experience
  • Valid US Driver’s License
  • Travel up to 10%

Preferred Qualifications:

  • ITIL Foundations certification
  • Scripting experience or willingness to learn
  • Knowledge of Cisco technology a plus
  • Knowledge of PKI a plus

Security Clearance Requirements:

  • Active Top Secret clearance adjudicated within the past 6 years with SCI eligibility.  Candidate must be open to CI poly.

Physical Requirements:

  • Must be able to remain in a stationary position up to 75% of the time
  • Must be able to move about inside the office to access file cabinets, office machinery
  • Must be able to position self to maintain office supplies on variable height shelving.
  • 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
  • Must be able to observe and detect employee deviations from established policy


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.