System Administrator - Senior

SYSTEM ADMINISTRATOR – SENIOR
The Senior System Administrator ensures the stable operation of the in-house computer software
systems and network connections for the CAGE system of applications and capabilities. This
includes planning, developing, installing, configuring, maintaining, supporting, and optimizing
all network software and communication links. Organizes and directs the configuration and
operation of CAGE information management systems. Analyzes and resolves end user software
program and connectivity issues. Conducts capacity and performance analysis and provides
system configuration change and upgrade recommendations. Increases system administrator
efficiency and accuracy via the use of automated tools and scripts, develops system administrator
procedures, and conducts system administrator training and skills assessment. When required,
provides end user training. Provides recommendations on technology direction to align with
business vision. Provides local and remote maintenance support to various operational systems
deployed at more than one location.

Support includes general maintenance, upgrades, and new installs of servers and applications.
Directs the work of other system administrators to provide the day-to-day system administration
to include system and resource optimization, and user assistance. Applies advanced technical
knowledge of application networking, including load balancing applications, and ensuring fault
tolerance. Performs vulnerability management.

The Senior System Administrator for this PWS manages, maintains, and secures critical IT
infrastructure (servers, networks, storage) within secure environments, focusing on high
availability, compliance (STIGs/RMF), automation (scripting), advanced troubleshooting (AD,
VMware, Linux/Windows), and providing senior-level support/mentorship, often involving
documentation, patching, and responding to incidents to ensure mission readiness.

Key Responsibilities may include, but not be limited to:

• System Management & Maintenance:
o Install, configure, operate, and maintain servers, storage, and peripherals.
o Administer Active Directory (AD), DNS, DHCP, Group Policy (GPO), and
VMware environments.
o Ensure system stability, integrity, and performance for core organizational
functions.
o Perform hardware and software upgrades and maintenance.
• Security & Compliance:
o Apply and validate DoD Security Technical Implementation Guides (STIGs) to
ensure secure configurations.
o Implement and manage security controls, patching, and vulnerability remediation.
o Participate in Risk Management Framework (RMF) documentation and
accreditation.
o Monitor for security threats and risks, managing firewalls.
• Automation & Documentation:
o Develop and maintain Standard Operating Procedures (SOPs), documentation,
and network diagrams.
o Automate routine tasks using scripting languages like PowerShell, Python, or
Ansible.
o Create and maintain OS images for deployment.
• Support & Troubleshooting:
o Provide advanced, Tier 2/3 technical support, resolving complex incidents.
o Monitor system performance (e.g., SCOM) and manage backups/disaster
recovery.
o Escalate issues and provide detailed reports (DLA INFOSPOTS, SITREPs,
AARs) for critical outages.
• Leadership & Strategy:
o Plan for future hardware/software needs and long-term system requirements.
o Collaborate with cross-functional teams and communicate with military/civilian
stakeholders.
Minimum Requirements:

• BA/BS in a technical discipline with at least 10 years of specialized experience.
(Specialized experience is defined as progressive experience in the field of Information
Processing, where the majority are specialized in numerous specialized Information
Processing disciplines involving a range of hardware/software solutions, at least four
years of which are concentrated, hand-on experience in installing, configuring,
maintaining, and resolving issues with various software.
• Sensitivity Level: Must possess IT-I Critical Sensitive security clearance or Tier 5 (T5) at
time of proposal submission
• 8570/8140: DoD Approved 8570 Baseline Certification: Category IAT Level II (Role:
Server Admin Applications). Candidate must possess one of the following certifications:
CCNA Security, CySA+, GICSP, GSEC, Security+ CE, SSCP
• Certification in one or more of the following areas: Function: Application Administrator
o COMPTIA
o Azure
o IBM MQ
o Windows Web Server IIS