ManTech Senior Principal Systems Administrator in Hanover, Maryland

Job Duties and Responsibilities

As a Senior Systems Administrator you will perform and lead system administration functions for Windows and Linux-based machines and provide system support for a large scale network. Must Be a Self-starter with a background in VMWare, Hardware, Networking, Windows and Unix/Linux systems administration and configuration. Details of position below:


Desktop Services support in multiple buildings to include:

• Mac workstation Support

• Linux workstation Support

• Windows workstation Support

• Hardware installations/modifications

• Thin client installations/modifications

• Troubleshoot networking problems and setting different VLANs on switch ports

• Create and modify VMs

• Improve lab processes

• Work with tier 1-tier 3 team members to manage all labs

• Support upgrading/downgrading system firmware/operating system version and installing applications

Desired skills:

• Windows

• Linux/Unix


• VMWare

• Computer Hardware knowledge (prefer A+ certified)

• Thin client knowledge

Desired experience:

• 10 years related experience

Clearance Requirements:

• TS/SCI w/Poly


Requires Bachelor s degree (in Computer Science or related field) or equivalent, and ten to twelve years of related experience.


Equivalent Experience/Education, Bachelor's Degree

Years of Experience

10-12 years w/Bachelors Degree, 07-09 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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