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60 Mantech Network Systems Administrator Jobs Hiring Near You

MANTECH

Senior Systems Administrator

Chantilly, VA · On-site

$88K - $119K/yr

MANTECH seeks a motivated, mission-oriented Senior Systems Administrator to join our team in ... Intermediate knowledge of networking principles and routing protocols * Ability to restore user ...

ManTech International

System Administrator

Columbia, MD · On-site

$128K - $214K/yr

MANTECH seeks a motivated, career and customer-oriented System Administrator to join our team in ... Maintain integrity of and configure network components, along with implementing operating systems ...

ManTech

System Administrator

Eglin, FL · On-site

MANTECH seeks a motivated, career and customer-oriented System Administrator to join our Air Force ... networking/firewalls/intrusion detection/prevention systems, forensic analysis/vulnerability ...

ManTech

System Administrator

Eglin, FL

MANTECH seeks a motivated, career and customer-oriented System Administrator to join our Air Force ... network storage. * Provide support to users in the areas of account management, enterprise ...

ManTech

System Administrator

Nellis Air Force Base, NV

$77K - $128K/yr

MANTECH seeks a motivated, career and customer-oriented System Administrator to join our Air Force ... networking/firewalls/intrusion detection/prevention systems, forensic analysis/vulnerability ...

New

MANTECH

Systems Administrator

Fort George G Meade, MD · On-site

MANTECH seeks an experienced and passionate, career and customer-oriented Systems Administrator to ... Knowledge of network devices (routers, switches, gateways) and protocols such as TCP/IP, UDP, HTTP ...

ManTech

System Administrator

Eglin, FL

MANTECH seeks a motivated, career and customer-oriented System Administrator to join our Air Force ... networking/firewalls/intrusion detection/prevention systems, forensic analysis/vulnerability ...

MANTECH

Systems Administrator

Fort George G Meade, MD · On-site

MANTECH seeks an experienced and passionate, career and customer-oriented Systems Administrator to ... Knowledge of network devices (routers, switches, gateways) and protocols such as TCP/IP, UDP, HTTP ...

ManTech

System Administrator

Quantico, VA · On-site

$85K - $141K/yr

MANTECH seeks a motivated, career and customer-oriented Systems Administrator to join our team USMC ... Experience troubleshooting network performances issues * Experience with the set-up, configuration ...

MANTECH

Linux Systems Administrator

Chantilly, VA

MANTECH seeks a motivated, mission-focused Senior Linux Systems Administrator to join our team in ... network teams * Maintaining and updating complex documentation on the operating system ...

ManTech International

System Administrator

Quantico, VA · On-site

$85K - $141K/yr

MANTECH seeks a motivated, career and customer-oriented Systems Administrator to join our team USMC ... Experience troubleshooting network performances issues * Experience with the set-up, configuration ...

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ManTech Jobs Information

Do workers at ManTech get paid breaks?

Yes. Most people get paid breaks.
100% of people say they get paid breaks.
Based on data from 8 people who took the Breakroom Quiz between December 2024 and June 2026.

Does ManTech pay people when they’re sick?

Sometimes. Only some people get paid when they’re sick.
46% of people say they wouldn’t get paid if they were sick but scheduled to work.
Based on data from 13 people who took the Breakroom Quiz between December 2024 and June 2026.

At ManTech, are sick days and vacation days separate paid time off?

Only some people have separate paid time off for sick days and vacation.
45% of people say they have to use vacation days when they’re out sick.
Based on data from 11 people who took the Breakroom Quiz between June 2025 and June 2026.

Is the health insurance from ManTech affordable enough for their workers?

Most people say the health insurance costs are okay.
83% of people say the health insurance costs are okay
Based on data from 6 people who took the Breakroom Quiz between March 2025 and June 2026.

Do people get paid time off at ManTech?

Most people get paid time off work.
100% of people say they get paid time off.
Based on data from 11 people who took the Breakroom Quiz between June 2025 and June 2026.

How far ahead of time do people find out their work schedule?

Most people find out their schedule less than four weeks ahead of time.
  • 80% of people with changing schedules find out their shifts one week or less ahead of time.
  • 20% of people with changing schedules find out their shifts two weeks ahead of time.
  • 0% of people with changing schedules find out their shifts three weeks ahead of time.
  • 0% of people with changing schedules find out their shifts four weeks or more ahead of time.

Based on data from 5 people who took the Breakroom Quiz between March 2025 and March 2026.

Do workers at ManTech worry about hours?

Most people don’t worry about getting enough hours.
100% of people report they don’t worry about getting enough hours.
Based on data from 6 people who took the Breakroom Quiz between December 2024 and March 2026.

Do ManTech workers get to choose the shifts they work?

Some people don’t get to choose which shifts they work.
50% report that they don’t have enough control over which shifts they work.
Based on data from 6 people who took the Breakroom Quiz between December 2024 and March 2026.

How easy is it for ManTech workers to change shifts?

Most people find it easy to change shifts.
80% of people report that it’s easy to change shifts if they need to.
Based on data from 5 people who took the Breakroom Quiz between March 2025 and March 2026.

How easy is it to get time off at ManTech?

Most people find it easy to get time off.
100% of people report it’s easy to get time off.
Based on data from 14 people who took the Breakroom Quiz between December 2024 and June 2026.

Do ManTech managers change schedules at the last minute?

Most managers don’t change people’s schedules at the last minute.
88% of people say their manager doesn’t change their shift schedule at the last minute.
Based on data from 8 people who took the Breakroom Quiz between December 2024 and March 2026.

Do jobs at ManTech spill into time workers aren’t paid for?

Rarely. The job doesn't usually spill into unpaid time.
25% of people report that their job takes up time that they don’t get paid for.
Based on data from 8 people who took the Breakroom Quiz between December 2024 and March 2026.

How easy is it to take sick days at ManTech?

Most people find it easy to take sick days.
100% of people report that it’s easy to take time off if they are sick.
Based on data from 14 people who took the Breakroom Quiz between December 2024 and June 2026.

Is working at ManTech good if you’re a parent or caregiver?

Most parents and caregivers say this is a good place to work.
100% of people who care for a child or other relative report this is a good place to work.
Based on data from 7 people who took the Breakroom Quiz between December 2024 and April 2026.

Do people at ManTech feel treated with respect by their managers?

Most people feel treated with respect by their managers.
93% of people say they’re treated with respect by their managers.
Based on data from 14 people who took the Breakroom Quiz between December 2024 and June 2026.

Do people at ManTech get to take their breaks without interruption?

Most people get breaks without interruption.
85% of people report that they get to take their breaks without interruption.
Based on data from 13 people who took the Breakroom Quiz between December 2024 and June 2026.

Is it stressful to work at ManTech?

Some people feel stressed out here.
46% of people say they often feel stressed out at work.
Based on data from 13 people who took the Breakroom Quiz between December 2024 and June 2026.

Do people at ManTech enjoy their jobs?

Most people enjoy their job.
89% of people report they enjoy their job.
Based on data from 9 people who took the Breakroom Quiz between December 2024 and June 2026.

Do people at ManTech recommend working with their team?

Most people recommend working with their team.
79% of people report that they would recommend working with their immediate team to a friend.
Based on data from 14 people who took the Breakroom Quiz between December 2024 and June 2026.

Do people get enough training when they start at ManTech?

Some people didn’t get enough training when they started.
43% of people report they didn’t get enough training when they started working here.
Based on data from 14 people who took the Breakroom Quiz between December 2024 and June 2026.

Do people get support to advance at ManTech?

Most people are given support to advance their career here.
In the last year, 67% of people report being given support to advance their career here.
Based on data from 12 people who took the Breakroom Quiz between December 2024 and June 2026.

Do people think ManTech’s headquarters understands what’s happening where they work?

Most people think headquarters doesn’t understand what’s happening where they work.
69% of people think that this employer’s headquarters or owners don’t have a good understanding of what’s really happening where they work.
Based on data from 13 people who took the Breakroom Quiz between December 2024 and June 2026.

Do workers feel well informed about how ManTech is doing?

Most people feel well informed about how the company is doing.
69% of people feel that they are kept well informed about how the company is doing as a whole.
Based on data from 13 people who took the Breakroom Quiz between December 2024 and June 2026.
What other companies are hiring for Network Systems Administrator jobs?
What are the most popular jobs at Mantech?
What are the most popular categories at Mantech?
Infographic showing various Network Systems Administrator job openings at Mantech in the United States as of August 2026, with employment types broken down into 100% Full Time. Highlights an 92% Physical, 1% Hybrid, and 7% Remote job distribution.

Senior Systems Administrator

MANTECH

Chantilly, VA • On-site

$88K - $119K/yr

Full-time

Re-posted 8 days ago

ManTech rating

9.0

Company rating: 9.0 out of 10

Based on 14 frontline employees who took The Breakroom Quiz

33rd of 242 rated software companies

Job description

hackajob is collaborating with MANTECH to connect them with exceptional professionals for this role.

MANTECH seeks a motivated, mission-oriented Senior Systems Administrator to join our team in Chantilly, VA.

As a Senior Systems Administrator you will be responsible for providing a full range of Tier 2/3 IT support services and expertise to customer activities, as well as coordinating and/or supervising a team of System Administrators. You will play a key role in the management, optimization, and troubleshooting of our VMware virtualized environment and Active Directory infrastructure, ensuring seamless and reliable operations for the organization.  You will demonstrate knowledge and understanding of client and server operations and maintenance with Windows 10 and 11 environments and Windows Server 2016/2019, to include Active Directory, Domain Controllers, DNS, GPO’s, PKI, DHCP, VMware v8, Backup Architectures, Storage Management, and Auditing. 

Responsibilities include, but not limited to:

  • Design, implement, and maintain VMware vSphere environments, including vCenter, ESXi hosts, and virtual machines.
  • Troubleshoot and resolve VMware-related issues, including performance bottlenecks, connectivity problems, and resource allocation.
  • Manage, monitor, and troubleshoot Active Directory (AD) and Group Policy infrastructure. Administer and support user and group management, including security and distribution groups within Active Directory.
  • Collaborate with other IT teams to manage system integration, configuration, and upgrades.
  • Create and maintain comprehensive documentation for systems architecture, processes, and configurations
  • Domestic Travel up to 25%

Minimum Qualifications:

  • Bachelor’s Degree and 4 years’ experience, or high school diploma/GED and 8 years of relevant systems administration experience
  • Experience in performing hardware/software maintenance, repairs, upgrades, full life cycle support, and cybersecurity in an Enterprise IT environment
  • Knowledge of Windows file and folder permission & inheritance structure
  • Intermediate knowledge of networking principles and routing protocols
  • Ability to restore user configurations from backups for continuity of operations
  • Ability to identify and implement new technologies at scale
  • Security+ certification (active)

Preferred Qualifications:

  • Previous NRO and NRO/COMM experience is highly desired
  • COMSEC experience desired
  • Ability to use MS Office and PC
  • Familiarity with PowerShell and command line interfaces
  • Knowledge of how to detect and correct technical issues impacting system/server performance
  • Experience with Microsoft Exchange
  • Experience with Linux/RHEL 8

Clearance Requirements:

  • Must possess a current / active TS/SCI with Polygraph
     

Physical Requirements:

  • Must be able to be in a stationary position more than 50% of the time
  • Needs to occasionally move about inside the office to access file cabinets, office machinery, etc.
  • Frequently communicates with co-workers, management, and customers, which may involve delivering presentations
  • Frequently moves Audio/Visual or Computer equipment weighing up to 50 pounds across and/or around a business campus or large facility

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