Systems Administrator II (Domain and Server) (PTMG)

AMERICAN SYSTEMS; California; On-site; USD 120,000 - 145,000; Full time

Job summary

AMERICAN SYSTEMS is a federal government contractor providing strategic IT, assessment, program support, engineering and training solutions. The Systems Administrator II will manage Windows and Linux servers, perform hardening, patching, and monitoring to sustain secure operations and RMF compliance.

The role requires 3–5 years of hands-on server experience, an active DoD 8570/8140 IAT Level II certification, and ability to work independently in a mission-focused IT environment.

Qualifications

• Minimum of 3 to 5 years of experience in systems administration.
• Hands-on experience supporting server environments and enterprise infrastructure.
• Current DoD 8570/8140 IAT Level II certification (Security+ CE, CySA+, SSCP, CND, GSEC, GICSP, or equivalent).
• Strong knowledge of server administration, OS configuration, patching, and hardening in regulated environments.
• Experience with Microsoft infrastructure services such as Active Directory, DNS, DHCP, and Group Policy.

Responsibilities

• Administer and maintain server systems and infrastructure for availability and performance.
• Deploy, configure, and initial software setup based on baselines.
• Patch, harden, and update operating systems and applications per security baselines.
• Install and manage approved software and perform system updates.
• Monitor system health and optimize resources for reliability.
• Troubleshoot issues and respond to incidents to ensure continuity of operations.
• Document configurations, procedures, changes, and RMF/compliance updates.
• Support cybersecurity and compliance activities including vulnerability remediation and RMF documentation.
• Produce system status and patch reporting; collaborate with network and security teams.

Skills

Server administration

Vulnerability remediation

Documentation

Independent work

Communication

Education

IAT Level II certification (Security+ CE, CySA+, SSCP, GSEC)

Tools

Active Directory

DNS

DHCP

Group Policy

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: The Systems Administrator II is responsible for the administration, maintenance, configuration, and support of Windows and Linux systems and related infrastructure services. This role performs system setup, hardening, patching, software installation, monitoring, troubleshooting, and technical documentation in support of secure and reliable operations. The position also supports vulnerability remediation, reporting, and compliance-related activities such as system documentation and security control implementation.

• Administer and maintain server systems and supporting infrastructure, ensuring system availability, performance, and operational stability.
• Perform system deployment, setup, and configuration, including operating system installation, hardware configuration, and initial software setup based on approved baselines.
• Manage the maintenance, patching, hardening, and updating of operating systems, applications, and approved software in accordance with established security baselines and compliance requirements.
• Install, configure, and update approved COTS and GOTS software and manage system updates across the environment.
• Monitor system health and performance, identify bottlenecks, and support optimization of system resources for efficiency and reliability.
• Troubleshoot system, hardware, and software issues and respond to incidents to ensure timely resolution and continuity of operations.
• Develop and maintain technical documentation for system configurations, procedures, operational changes, troubleshooting activities, and compliance-related updates.
• Support cybersecurity and compliance activities, including vulnerability remediation, implementation of approved security controls, and assistance with RMF-related documentation and system changes.
• Support operational reporting requirements, including system status updates and patch/hotfix reporting, as required.
• Collaborate with network, cybersecurity, and support personnel to execute approved changes, support problem resolution, and maintain accurate asset and configuration information.

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), Epsilon will not consider candidates for this position who do not meet the aforementioned conditions.
• Minimum of 3 to 5 years of experience in systems administration, with hands-on experience supporting server environments and enterprise infrastructure.
• Must hold a current DoD 8570/8140 IAT Level II certification, such as Security+ CE, CySA+, SSCP, CND, GSEC, GICSP, or equivalent.
• Strong technical knowledge of server administration, operating system configuration, patching, hardening, and infrastructure support in regulated environments.
• Experience managing Microsoft infrastructure services such as Active Directory, DNS, DHCP, and Group Policy, where applicable to the assigned environment.
• Experience supporting system deployment, configuration, patching, software updates, backup and recovery operations, and vulnerability remediation.
• Experience supporting virtualized server environments and associated administration tasks, where applicable.
• Working knowledge of cybersecurity and compliance frameworks, including NIST, FISMA, RMF, and DISA STIG requirements.
• Experience maintaining technical documentation for system configurations, procedures, operational changes, troubleshooting activities, and compliance-related updates.
• Strong troubleshooting skills with the ability to diagnose and resolve moderately complex system, hardware, and software issues.
• Ability to work independently on assigned tasks while managing multiple priorities in a mission-focused IT environment.
• Strong communication skills and the ability to work effectively in a team-oriented environment.
• 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.

Pay Transparency Statement

AMERICAN SYSTEMS is committed to pay transparency for our applicants and employee-owners. The salary range for this position is USD $120,000.00/Yr. - USD $145,000/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