Network/System Administrator III

SYSTEM HIGH CORPORATION•San Antonio, TX

2d•Onsite

About The Position

The Network/System Administrator III organizes, installs, and supports government computer systems, including LANs, WANs, network segments, intranets, and other data communications systems. The role also contributes to network architecture, design, and analysis, and participates in decisions about hardware and software upgrades. It may provide technical support to computer users. The position supports Department of Defense agency activities within Special Access Programs, including efforts associated with HQ Air Force, the Office of the Secretary of Defense, and Military Compartments. It provides day-to-day support for Collateral, SCI, and SAP activities. The administrator leads daily network operations with little to no oversight, implements capabilities vetted by cybersecurity and engineering stakeholders, and helps maintain JSIG/RMF Authority to Operate and continuous monitoring processes. Work also includes operating security and performance monitoring capabilities, supporting security assessments and incident response, and developing operational checklists, TTPs, and SOPs. The role requires advanced technical competency across supported platforms and tools, which may include Windows Server and desktop systems, Active Directory, Red Hat Enterprise Linux, virtualization platforms, enterprise networking and security appliances, vulnerability assessment and forensic tools, SIEMs, access-control technologies, databases, web servers, and collaboration and voice/video systems. The position is located in San Antonio, Texas, and requires a TS/SCI clearance and at least two years of Special Access Program experience.

Requirements

5–7 years of related experience.
Bachelor’s degree in a related area or equivalent experience (four years).
Must meet DoD Directive 8570.01-M position and certification requirements for Information Assurance Technician Level III (IAT III) within six months of hire.
Current Top Secret clearance with SCI eligibility.
Eligibility for access to Special Access Program information.
Willingness to submit to a counterintelligence polygraph.
At least two years of Special Access Program experience.
Thorough knowledge of Microsoft Windows desktop and server operating systems, Microsoft Exchange Server, and RHEL administration and associated hardware as needed.
Experience communicating effectively and collaborating in a high-performance team environment.
Knowledge of Group Policy design and configuration.
Working knowledge of Cisco networking and switching, virtualization technologies, LAN and WAN technologies, and data backup technologies.
Working knowledge of virtualization in user environments, operating systems, and network appliances.
Working knowledge of COMSEC policies and integration.
Working knowledge of Risk Management Framework, Common Criteria, and System Security Policy as they relate to assessments and authorization.
Current relevant experience with PL2, PL3, and PL4 network environments or systems.
Working knowledge of WSUS and/or YUM patch deployment methodologies.
Familiarity with DoD policy for implementing and executing system and network administration.
Ability to regularly lift up to 50 pounds.

Responsibilities

Organize, install, and support government computer systems, including LANs, WANs, network segments, intranets, and other data communication systems.
Help architect, design, and analyze network models and participate in decisions about future hardware or software infrastructure upgrades.
Provide technical support to computer users as needed.
Support SAP, SCI, and Collateral activities for DoD agencies, including HQ Air Force, OSD, and Military Compartments efforts.
Work independently with little to no oversight and lead the IT operations team in day-to-day network management and operations.
Implement capabilities vetted through cybersecurity, ISSE, and higher headquarters to maintain JSIG/RMF Authority to Operate and continuous monitoring tools and processes.
Manage COTS and GOTS products used to collect, display, and remediate system security and operations/performance functions and metrics.
Assist with security assessments of servers, network devices, and security appliances, including assessment accuracy and efficiency.
Create operational O&M checklists and develop associated TTPs and SOPs.
Operate enterprise SIEM monitoring capabilities and create or tailor complex event alarms, rules, and summary reports.
Execute cybersecurity procedures for day-to-day network management, operations, and maintenance.
Monitor and analyze cybersecurity tool output for reportable security incidents and residual risk.
Assist with technical risk analysis of emerging cybersecurity tools and processes.
Participate in security incident response as needed.
Assist ISSM, ISSO, and ISSE personnel with integrating or developing techniques to improve confidentiality, integrity, and availability across networks and systems at various classification levels.