Systems Administrator II (Domain and Server) (JSF)

American Systems; Manassas (VA); On-site; USD 90,000 - 110,000; Full time

Job summary

AMERICAN SYSTEMS in Manassas, VA is seeking a Systems Administrator II (Domain & Server) to maintain and support enterprise IT infrastructure, including Windows and Linux servers, Active Directory, DNS, DHCP, and domain services. You will monitor, troubleshoot, and improve system performance while aligning with security policies.

This role requires 3–5 years in systems administration, IAT II certs, and experience with virtualization (VMware/Hyper-V/Nutanix), storage (SAN/NAS), cloud platforms,

Qualifications

• U.S. citizen with active Secret clearance or Top Secret with SCI eligibility.
• 3–5 years of systems administration experience in Windows and Linux.
• Current 8570/8140 IAT Level II Certification (CCNA Security, CySA+, GICSP, GSEC, Security+ CE, CND, SSCP).
• Experience with AD, DNS, DHCP and Group Policy in enterprise environments.
• Experience with virtualization (VMware/Hyper-V) and storage (SAN/NAS).
• Familiar with cloud platforms and hybrid environments.
• Proficiency with PowerShell, Ansible or Terraform.
• Experience with Splunk and Git.
• Knowledge of NIST/FISMA/DISA STIG compliance.
• Ability to work independently and manage multiple priorities.

Responsibilities

• Administer Windows and Linux servers for availability and performance.
• Deploy, configure, patch OSes and applications.
• Support virtualization environments (e.g., Nutanix) to maintain efficiency and reliability.
• Implement and maintain security controls and compliance measures.
• Manage storage (SAN/NAS) and support backups and recovery.
• Participate in upgrades, migrations, and disaster recovery planning.
• Document system configurations and troubleshooting procedures.
• Troubleshoot moderately complex system issues and respond to incidents.
• Collaborate with network, security, and application teams to support operations.

Skills

Active Directory

DNS

DHCP

Group Policy

Windows Server

Linux

VMware/Hyper-V

PowerShell

Ansible

Terraform

Git

Splunk

Cloud Platforms

Security & Compliance

Documentation

Tools

Nutanix

VMware

Job description

Overview

AMERICAN SYSTEMS is an employee-owned federal government contractor supporting national priority programs through our strategic solutions in the areas of Information Technology, Test & Evaluation, Program Mission Support, Engineering & Analysis, and Training.

Responsibilities

An average Day: As the Systems Administrator II (Domain & Server) you will be responsible for the administration, maintenance, and support of enterprise IT infrastructure, including Microsoft Server environments and domain services. You will support critical systems such as Active Directory, Exchange Server, DNS, and DHCP services, while administering Windows and Linux server environments to maintain performance, security, and availability. You will also be responsible for system monitoring, troubleshooting moderately complex technical issues, implementing approved security controls, managing user accounts and permissions, and collaborating with cross-functional teams to support organizational technology needs. Additionally, in this position you will:

• Administer and maintain Windows and Linux servers, ensuring system availability, performance, and operational stability.
• Manage the deployment, configuration, maintenance, and patching of operating systems and applications.
• Support virtualization environments (e.g., NUTANIX) to maintain efficient resource utilization and platform
• reliability.
• Implement and maintain security measures, including access control, system hardening, and vulnerability remediation, in accordance with established policies and compliance requirements.
• Manage storage solutions (SAN, NAS) and support backup and recovery operations.
• Participate in system upgrades, migrations, and disaster recovery planning and execution.
• Develop and maintain documentation for system configurations, operational procedures, and troubleshooting activities.
• Troubleshoot moderately complex system issues and respond to incidents to ensure timely resolution.
• Collaborate with cross-functional teams, including network, security, and application teams, to support and improve infrastructure operations.

Qualifications

• As a requirement of this position, all candidates must be a U.S. Citizen. In accordance with 8 U.S.C. 1324b(a)(2)(C).
• Must havean active Secretclearancewith the ability to obtain aTop Secret with SCI eligibility or have an active Top Secret with SCI eligibility; Will be subject to a federal background investigation.
• Minimum of 3 to 5 years of experience in systems administration, with hands-on experience in both Windows and Linux environments.
• Must hold a current 8570/8140 IAT Level II Certification (CCNA Security, CySA+, GICSP, GSEC, Security+ CE, CND, SSCP)
• Strong technical knowledge of server administration, domain management, and enterprise infrastructure support.
• Experience managing Active Directory, DNS, DHCP, and Group Policy in enterprise environments.
• Experience with virtualization technologies such as VMware, Hyper-V, or similar platforms.
• Experience supporting storage management, including SAN and NAS solutions, and backup/recovery operations.
• Familiarity with cloud platforms (AWS, Azure, or GCP) and hybrid cloud environments.
• Experience with automation tools such as PowerShell, Ansible, or Terraform for system configuration and management.
• Experience with monitoring tools such as Splunk for system performance monitoring.
• Experience with Git for version control.
• Working knowledge of security frameworks, including NIST, FISMA, or DISA STIG compliance.
• Must be able to work independently on assigned tasks while managing multiple priorities in a fast-paced enterprise environment.
• Strong troubleshooting skills with a focus on diagnosing and resolving moderately complex system issues.
• Strong communication skills and the ability to work effectively in a team-oriented environment.

Pay Transparency Statement

AMERICAN SYSTEMS is committed to pay transparency for our applicants and employee-owners. The salary range for this position is USD $90,000.00/Yr. - USD $110,000/Yr. Actual compensation will be determined based on several factors permitted by law. AMERICAN SYSTEMS provides for the welfare of its employees and their dependents through a comprehensive benefits program by offering healthcare benefits, paid leave, retirement plans, insurance programs, and education and training assistance.

EEO Statement

EEO Race/Sex/Disability Status/Veteran Status