Principal RHEL System Engineer - Military veterans preferred

ManTech (


  full-time   employee

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 Principal RHEL System Engineer –to join our team in the Chantilly, Va location.

Responsibilities include, but are not limited to:

  • Work on a design team responsible for designing and developing the implementation large-scale enterprise system implementations
  • Participate in the engineering of Service Now application infrastructure, including application upgrades, review and implementation of security best practices, automation of processes, and plans to improve efficiency.
  • Implement Code First solutions using tools to support a SDDC that describe and document solutions, complementing the maturation of a CI/CD pipeline
  • Promote tools and processes to incorporate and mature IAC network design
  • Writing implementation and design documents describing how security features are implemented
  • Providing IT Systems Engineering support on a wide range of technologies, including: Microsoft Exchange, Microsoft SharePoint, Oracle databases, Microsoft SQL Server, Service Now, Altiris, MECM, HBSS, Splunk, VMware vCenter, Horizon View, NSX, Site Recovery Manager, vRealize, HPAC Secure Printing, HP Blade Servers, HP SANs, Certificate Services, DHCP, DNS, Active Directory, Group Policies and Microsoft Windows Operating Systems.
  • Participate in technology evaluation and reengineering teams to support strategy-definition and continuous process improvement activities
  • Develop, enhance, and maintain automation of cloud enablement tools

Basic Qualifications:

  • Bachelor’s Degree and 10+ years of relevant IT experience
  • 7+ years working with Linux Operating systems
  • 3+ years of experience scripting
  • CISSP, Security+ CE or DoD 8570 Certification required (IAT Level II required / IAT Level III desired)
  • One of the following certifications is required within six months of hire: RHCSA, LFCS, LPIC-1/2/3 or Linux+
  • Proficiency in PowerShell, PowerCLI, BASH, Python and/or other scripting languages

Preferred Qualifications:

  • ITIL 4 Foundation Certification
  • Certifications such as RHCE and RHCDS
  • Willingness to work after normal duty hours (nights and weekends) as needed.

Security Clearance Requirements:

  • US Citizenship required and active TS clearance adjudicated within the last 6 years
  • Candidate must be open to CI poly

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 equipment, etc
  • 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


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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