ManTech Senior Systems Administrator in Chantilly, Virginia

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

ManTech is looking for a motivated, customer-oriented Systems Administrator in support of a secure Windows based Information System. The Systems Administrator will support the installation, operation, and maintenance of all current and future Information Systems. Duties and responsibilities involve the administration of Windows servers, Windows workstations, Terminal Servers, File & Print servers, organization folders as well as system documentation, analyzing and troubleshooting system anomalies, and ensuring optimal Information System performance. This position is a part of a centralized team of systems administrators and systems engineers.

Responsibilities include but are not limited to:

  • Serving as the first point of contact for customers seeking technical assistance over the phone, email, and chat

  • Performing remote troubleshooting through diagnostic techniques and pertinent questions

  • Determining the best solution based on the issue and details provided by customers

  • Properly escalate unresolved queries to the next level of support

  • Track, route and redirect problems to correct resources

  • Learn fundamental operations of commonly used software, hardware, and other equipment.

  • Follow standard Service Desk operating procedures; accurately log all Service Desk tickets using the defined tracking software.

  • Walk customers through problem solving process

  • Follow up with customers, provide feedback and see problems through to resolution

  • Utilize excellent customer service skills and exceed customers expectations

  • Ensure proper incident and request recording, documentation and closure

  • Ability to utilize the applications for Microsoft Office for support, reporting and documentation

  • Professional demeanor, previous customer service experience strongly desired.

  • Excellent oral and written communication skills.

  • Good problem solving skills; ability to visualize a problem or situation and think abstractly to solve it.

  • Ability to work with or without direct supervision.

Position requirements:

  • Requires Bachelor s degree (in Computer Science or related field) or equivalent

  • 5-7 years experience in the Information Technology field

  • Knowledge of Microsoft Windows 2008/2012 Server

  • Knowledge of Microsoft Exchange 2010, Active Directory, and associated hardware.

  • Knowledge of Microsoft Office 2010/2016

  • Working knowledge of Horizon View, data backups, and antivirus.

  • Experience with deploying workstation images.

  • Experience with deploying thin or zero clients.

  • Security+CE or other IAT Level I/II Certification required

  • Microsoft Certified Solutions Associate (MCSA) certification desired

  • Microsoft Technology Associate (MTA) certification desired

  • Must be able to lift up to 20 lbs.

Security Requirements:

US Citizenship and an active TS clearance


Requires Bachelor s degree (in Computer Science, Math or Engineering) or equivalent, and two to four years of related experience.


Equivalent Experience/Education, Bachelor's Degree

Years of Experience

11-13 years w/High School Diploma, 05-07 years w/Bachelors Degree, 02-04 years w/Masters Degree

Position Type





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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