Network​/System Administrator III

69-090 – Network/System Administrator III

Washington, United States

Location:

Joint Base Anacostia-Bolling, Washington, DC

Position Type:
Full Time

Security Clearance:
Active Top Secret/SCI Clearance Required | Special Access Program Eligibility Required | Must Be Willing to Undergo a Counterintelligence Polygraph

Sandy Mac Evolution LLC is seeking an experienced Network/System Administrator III to support Department of Defense Special Access Program environments at Joint Base Anacostia-Bolling in Washington, DC.

The selected candidate will organize, install, administer, and support secure government computer systems and data communications infrastructure, including local area networks, wide area networks, network segments, intranets, servers, virtualization platforms, security appliances, and enterprise monitoring systems.

This senior-level position will provide day-to-day support for Collateral, Sensitive Compartmented Information, and Special Access Program activities supporting organizations such as Headquarters Air Force, the Office of the Secretary of Defense, and other military compartmented programs. The Network/System Administrator III will also help lead daily IT operations, maintain compliance with Joint Special Access Program Implementation Guide and Risk Management Framework requirements, support security assessments, and contribute to infrastructure modernization decisions.

• Independently perform assigned duties with little to no direct oversight.
• Lead daily IT operations and support the management, administration, and maintenance of secure networks and information systems.
• Implement technical capabilities approved by Cybersecurity, Information System Security Engineering, and higher headquarters.
• Maintain JSIG and RMF Authority to Operate requirements and support continuous monitoring processes.
• Administer local area networks, wide area networks, network segments, intranets, servers, workstations, and other data communication systems.
• Help architect, design, evaluate, and analyze secure network models and infrastructure solutions.
• Support recommendations and decisions regarding future hardware, software, networking, and infrastructure upgrades.
• Manage commercial off-the-shelf and government off-the-shelf products used to collect, display, analyze, and remediate system security, operations, and performance data.
• Operate enterprise security monitoring tools and Security Information and Event Management platforms.
• Create and tailor complex event alarms, correlation rules, dashboards, and summary reports.
• Monitor and analyze cybersecurity tools for reportable incidents, vulnerabilities, anomalous activity, and residual risk.
• Execute cybersecurity procedures supporting daily network management, operations, maintenance, and incident response.
• Participate as a member of the security incident response team when required.
• Assist with security assessments of servers, network devices, security appliances, and supporting technologies.
• Support the accuracy, completeness, and efficiency of technical security assessments.
• Assist in evaluating the technical risks associated with emerging cybersecurity tools, technologies, and processes.
• Develop daily, weekly, monthly, and annual operations and maintenance checklists.
• Create and maintain technical procedures, Tactics, Techniques, and Procedures, and Standard Operating Procedures.
• Collaborate with Information System Security Managers, Information System Security Officers, and Information System Security Engineers to improve the confidentiality, integrity, and availability of systems operating at multiple classification levels.
• Provide technical support to users and troubleshoot hardware, software, account, system, network, and connectivity issues.
• Support configuration management, patch management, vulnerability remediation, system hardening, backup operations, and access-control administration.
• Maintain technical documentation, system configurations, network diagrams, operational records, and assessment evidence.
• Ensure compliance with applicable Department of Defense policies, Special Access Program requirements, cybersecurity standards, and organizational procedures.

• Five to seven years of related network administration, system administration, cybersecurity, or information technology experience.
• At least two years of experience supporting Special Access Programs.
• Demonstrated ability to operate independently and perform senior-level technical responsibilities with minimal oversight.
• Thorough knowledge of Microsoft Windows desktop and server operating systems.
• Experience administering Microsoft Active Directory, Group Policy, and enterprise user environments.
• Experience with Microsoft Exchange Server and associated enterprise infrastructure.
• Working knowledge of Red Hat Enterprise Linux administration and supporting hardware.
• Experience supporting Local Area Network and Wide Area Network technologies.
• Working knowledge of Cisco…