(JBSA) System Administrator, Level III

3 Reasons Consulting•San Antonio, TX

About The Position

3 Reasons Consulting is seeking a skilled and motivated System Administrator to support the sustainment, security, and performance of enterprise systems and applications. This role will provide essential support for infrastructure management, system security, virtualization, and backup operations in alignment with ITIL and industry best practices. Candidates must meet IAT II requirements and either hold or be eligible for a Tier 1 background check. Services to be performed include, but are not limited to: Manage and troubleshoot server operating systems, infrastructure software, and hardware. Administer the day-to-day integrity, availability, and security of systems and applications. Execute capacity analysis, monitor performance, and maintain the security posture of infrastructure systems. Create and maintain SOPs, maintenance guides, and knowledge base articles. Perform maintenance upgrades to maintain operational and security posture. Assist engineering teams in the evaluation and testing of hardware and software products. Provide support for Virtual Machines (e.g., power cycles, snapshot management). Ensure STIG compliance and reporting. Create, deploy, and manage Group Policy Objects (GPOs). Manage patching for servers and workstations, including OS and application updates (e.g., Microsoft 365, Adobe, Java). Test and troubleshoot system images. Support problem management, including root cause analysis for patching and vulnerabilities. Provide support for Microsoft Endpoint Configuration Manager. Support end user devices and servers for backup and restoration in collaboration with DHA Enterprise Support staff. Implement and support system and infrastructure backup procedures. Periodically test backup and restoration operations per enterprise directives. Document backup and restore operations for auditability. Recommend process and tool improvements for backup reliability. Coordinate with Government entities to resolve backup and restore issues. Ensure encryption and secure storage of backup media per FIPS and DoD standards.

Requirements

Bachelor’s degree in Computer Science, Information Technology, or equivalent experience.
3+ years of experience with systems administration, patch management, and backup operations.
Strong knowledge of virtualization, Microsoft environments, and compliance standards.
DoD 8570 IAT Level II (e.g., Security+ CE and relevant Computing Environment certification).
Must be able to pass a National Agency Check (NAC)/Tier 1 background check.

Responsibilities

Manage and troubleshoot server operating systems, infrastructure software, and hardware.
Administer the day-to-day integrity, availability, and security of systems and applications.
Execute capacity analysis, monitor performance, and maintain the security posture of infrastructure systems.
Create and maintain SOPs, maintenance guides, and knowledge base articles.
Perform maintenance upgrades to maintain operational and security posture.
Assist engineering teams in the evaluation and testing of hardware and software products.
Provide support for Virtual Machines (e.g., power cycles, snapshot management).
Ensure STIG compliance and reporting.
Create, deploy, and manage Group Policy Objects (GPOs).
Manage patching for servers and workstations, including OS and application updates (e.g., Microsoft 365, Adobe, Java).
Test and troubleshoot system images.
Support problem management, including root cause analysis for patching and vulnerabilities.
Provide support for Microsoft Endpoint Configuration Manager.
Support end user devices and servers for backup and restoration in collaboration with DHA Enterprise Support staff.
Implement and support system and infrastructure backup procedures.
Periodically test backup and restoration operations per enterprise directives.
Document backup and restore operations for auditability.
Recommend process and tool improvements for backup reliability.
Coordinate with Government entities to resolve backup and restore issues.
Ensure encryption and secure storage of backup media per FIPS and DoD standards.