Senior Principal Systems Engineer - Rising Wolf - Military veterans preferred

ManTech (


  full-time   employee

United States

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 Systems Engineer, Sr. Principal to join our team in the Warrenton, VA area.

Responsibilities include, but are not limited to:

  • Identify and diagnose complex performance, security, and technical issues
  • Develop and implement solutions across a wide range of technologies such as Cisco, Microsoft, VMWare
  • Implement and maintain Secure Host Baseline in combination with DISA STIG requirements
  • Maintain physical back-end and virtual servers running on VMWare and Nutanix
  • Maintain multiple virtual desktop infrastructures using Citrix XenDesktop

Basic Qualifications:

  • Bachelor’s degree in an IT related field and 11-13 years of IT related experience
  • Must possess well-developed verbal and written communication skills
  • Current DODD 8140/8570 IATII certification (or higher) required (e.g., CCNA Security, Security+ CE, GICSP, GSEC, SSCP, etc)
  • MCSA 2016, MS 365 Enterprise Admin Expert or equivalent certification
  • Experience with Windows Server 2019
  • Working knowledge of Citix XenDesktop
  • Solid working knowledge of VMware ESXi 6.x/7.x
  • Significant experience with Microsoft Active Directory, multiple forests/multiple domains
  • Working knowledge of Microsoft SQL 2016/2019, multiple instances, clustering
  • Ability to travel up to 25%.
  • Working knowledge of SANs, preferred HP storage solutions
  • Experience with Microsoft Office applications such as Excel, Word, PowerPoint and Outlook.

Preferred Qualifications:

  • VMware certification VCP 6.x 
  • Experience with Commvault 11.x
  • Experience with Microsoft Endpoint Configuration Manager
  • Experience with Windows Server 2019, SQL 2016, SharePoint 2019
  • Experience with Microsoft Exchange, 2016/2019
  • Experience developing IT checklists, SOPs, guides, etc.

Security Clearance Requirements:

  • An active and current TS/SCI clearance is required.

Physical Requirements:

  • Must be able to remain in a stationary position 50%
  • The person in this position 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.
  • The person in this position frequently communicates with co-workers, management and customers. 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 as a result of your disability. To request an accommodation please click and provide your name and contact information.