ManTech Prinicpal Systems Engineer in Chantilly, Virginia

Become an integral part of a diverse team that leads the world in Mission, Cyber, and Technology Solutions. At ManTech International Corporation, you will help protect our national security while working on innovative projects that offer opportunities for advancement.

As a Principal Windows Systems Engineer you will perform system engineering functions for the Windows-based platform WAN, Active Directory, VMware, Public Key Infrastructure, Storage Area Networks, Veeam Backup and Replication, VDI, performance monitoring and the supporting infrastructure to comply with applicable standards.

The potential candidate will also have knowledge of Active Directory and related functions such as DNS, DHCP, GPO processing, Exchange, SharePoint, SolarWinds, VSphere 6 to include Site Recovery Manager, Replication, Orchestrator, and Operations Manager.

Responsibilities include but not limited to:

  • Support connectivity with other domains and the existing systems

  • Analyze system faults, troubleshoot, and run diagnostic test on operating system and hardware to detect problems

  • Evaluate and install developed software during various phases of testing

  • Review and prepare documentation for systems and tests capable of installing and required software

  • Initiate preventive maintenance on the operation system as well as be capable of repairing system/environment problems

  • Develop the procedures and be capable of executing existing and developed procedures in order to maintain compliance with mandates and/or vendor-released patches and upgrades

  • Troubleshoot of system performance and make system modifications to accommodate hardware and software upgrades

Position Requirements:

  • BA/BS in Computer Science, Information Security, or related field; a Master s degree is preferred

  • 7-9 years of operating system experience with 7-9 years of MS Windows experience

  • Possess strong technical written and verbal communication skills essential

  • Networking skills required, with emphasis on security

  • 8570/8140 compliance required certifications (Minimum of Security+CE)

  • Desired certifications include MCSA, MCSE, MCITP, VCP

Security Requirements:

U.S. Citizenship and an active DoD Top Secret clearance based upon a SSBI completed within the last 5 years and SCI eligibility


Requires Bachelors degree (in Computer Science, Math, Electrical Engineering or related field) and seven to nine years of related experience.


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ManTech International Corporation is comprised of approximately 7,300 talented employees who use advanced technology to help government and industry meet some of their greatest challenges around the world. We adhere to the simple, no-nonsense values on which ManTech was founded more than four decades ago, aligning squarely with the mission objectives of our customers. As our customer base continues to expand and diversify, we continue to diversify our workforce and solutions. Nearly half our employees have a military background, and approximately 70 percent hold a government security clearance. As a leading provider of innovative technology services and solutions for the nation's defense, security, health, space, and intelligence communities; we hold nearly 1,100 active contracts with more than 50 different government agencies.

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 Waretime 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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