×
Register Here to Apply for Jobs or Post Jobs. X

Senior Systems Administrator

Job in Fort Belvoir, Fairfax County, Virginia, 22060, USA
Listing for: Nationwide IT Services
Full Time position
Listed on 2026-09-21
Job specializations:
  • IT/Tech
    Systems Administrator, Cybersecurity, Windows Server, IT Support
Salary/Wage Range or Industry Benchmark: 110000 - 177000 USD Yearly USD 110000.00 177000.00 YEAR
Job Description & How to Apply Below

Location

Ft. Belvoir, VA

Security and Certification Requirements

Tier 5 investigation and a Top Secret clearance.
DoD 8570/8140 baseline certification:
IAT II or IAT III.
Computing environment
:
Server Admin M and Domain Admin Z for a cloud or Microsoft operating system, in accordance with the DLA-approved computing-environment requirement.

Position Summary

Nationwide IT Services, NIS, is seeking a Senior Systems Administrator to ensure the stable, secure, and efficient operation of enterprise software systems, network connections, information-management systems, servers, and applications. This is an onsite position and part of a proposal effort.

The administrator plans, installs, configures, maintains, supports, and optimizes network software and communications links across multiple locations; resolves complex application and connectivity issues; leads day-to-day system administration; and recommends changes that improve capacity, performance, reliability, security, and alignment with the organization’s business vision.

Key Responsibilities
  • Hands-on Windows Server engineering and administration, Active Directory, server builds, monitoring, file services, migrations, patching, Group Policy, hardening, PKI, automation, and security incident response.
  • Plan, install, configure, maintain, support, and optimize enterprise server platforms, network software, applications, and communication links.
  • Organize and direct the configuration, operation, administration, and sustainment of information-management systems.
  • Provide local and remote maintenance support for operational systems deployed at multiple locations, including general maintenance, upgrades, new server installations, and application deployments.
  • Analyze and resolve end-user software, system-performance, access, application, and network-connectivity issues.
  • Conduct capacity, availability, and performance analyses and recommend system configuration changes, upgrades, resource adjustments, and technology refresh actions.
  • Automate recurring system-administration activities through approved tools and scripts to improve administrator efficiency, consistency, and accuracy.
  • Develop, maintain, and enforce system-administration procedures, operating guides, configuration documentation, and troubleshooting runbooks.
  • Conduct system-administrator training, skills assessments, knowledge transfer, and end-user training.
  • Direct and coordinate the work of other system administrators responsible for daily operations, system and resource optimization, user assistance, maintenance, and issue resolution.
  • Apply advanced technical knowledge of application networking, load balancing, high availability, redundancy, and fault tolerance.
  • Perform vulnerability management, including vulnerability identification, assessment, prioritization, remediation, validation, and reporting.
  • Monitor system health, security, utilization, and reliability; investigate incidents; conduct root-cause analysis; and implement corrective actions.
  • Recommend technology direction, system architecture, modernization priorities, and infrastructure improvements that support business and mission objectives.
Required Qualifications
  • Ten years of specialized experience in information processing involving multiple hardware and software disciplines and a broad range of enterprise technology solutions.
  • At least four years of concentrated, hands-on experience installing, configuring, maintaining, supporting, and resolving issues with enterprise software and related systems.
  • Bachelor of Science or Bachelor of Arts degree in a technical discipline.
  • Relevant certification from a nationally recognized technical authority.
  • Tier 5 investigation and Secret clearance.
  • DoD-approved 8570/8140 baseline certification at IAT II or IAT III.
  • Applicable DLA-approved computing-environment qualifications for Server Admin M and Domain Admin Z in a cloud or Microsoft operating-system environment.
    Microsoft Administrator Associate preferred.
  • Demonstrated experience administering enterprise servers, applications, network services, user accounts, system resources, and security configurations.
  • Experience conducting capacity and performance analysis, system optimization, configuration changes, software upgrades, and new installations.
  • Experience leading or directing other system administrators and coordinating operational priorities across multiple systems or locations.
  • Demonstrated knowledge of vulnerability management, secure configuration, patching, remediation validation, and…
Position Requirements
10+ Years work experience
To View & Apply for jobs on this site that accept applications from your location or country, tap the button below to make a Search.
(If this job is in fact in your jurisdiction, then you may be using a Proxy or VPN to access this site, and to progress further, you should change your connectivity to another mobile device or PC).
 
 
 
Search for further Jobs Here:
(Try combinations for better Results! Or enter less keywords for broader Results)
Location
Increase/decrease your Search Radius (miles)
0
200
Filters
Education Level
Experience Level (years)
Posted in last:
Salary