Cyber Infrastructure Support

About the Role

Leidos' Corporate Information Security Office (CISO) has an opening for a Cyber Infrastructure Support professional in our Omaha, NE office. This position will support the testing, implementation, deployment, maintenance, and administration of classified cyber systems, networks, and their supporting infrastructure hardware and software. You will perform hands-on systems administration and infrastructure support activities across Windows and Linux environments.

Location: On-site in Omaha, NE.

Key Responsibilities

• Install, configure, maintain, and troubleshoot Windows and Linux servers, workstations, and supporting infrastructure components.
• Perform approved software installations, upgrades, updates, removals, and configuration changes.
• Support operating system and application patch management activities.
• Install and validate firmware, driver, and hardware-management updates for servers, workstations, storage devices, and network-connected equipment.
• Support the secure transfer, validation, scanning, and installation of software and updates within classified or air-gapped environments.
• Configure and deploy new servers, workstations, peripheral devices, and other information technology equipment.
• Perform hardware installation, replacement, troubleshooting, repair coordination, and lifecycle support.
• Configure and administer Microsoft Windows Server operating systems and associated enterprise services.
• Support Microsoft Active Directory administration, including user and computer objects, organizational units, security groups, and permissions.
• Assist with the development, testing, implementation, and troubleshooting of Group Policy Objects.
• Apply and validate Security Technical Implementation Guide (STIG) requirements and other approved security configuration baselines.
• Use approved security and compliance tools to evaluate system configurations and identify potential vulnerabilities.
• Coordinate with Information Assurance personnel to remediate security findings, configuration deficiencies, patching gaps, and vulnerability scan results.
• Support Red Hat Enterprise Linux systems.
• Support virtual infrastructure hosted on VMware vSphere and ESXi platforms.
• Monitor system health, availability, performance, and other operational indicators.
• Troubleshoot system outages, degraded performance, authentication issues, application failures, network connectivity problems, and other infrastructure incidents.
• Review system, application, security, and infrastructure logs to support troubleshooting and incident resolution.
• Assist with device discovery, operating system fingerprinting, service scanning, and other approved network or infrastructure assessment activities.
• Support enterprise cybersecurity and infrastructure tools for endpoint protection, vulnerability management, compliance validation, logging, and monitoring.
• Create and maintain system documentation, including build procedures, configuration records, system diagrams, inventories, maintenance records, and standard operating procedures.
• Document completed work, technical findings, configuration changes, patching activities, incidents, and corrective actions in approved ticketing or workflow systems.
• Participate in configuration management and change-control processes.
• Maintain accurate hardware and software inventory information and update asset-management records.
• Support hardware and software refresh activities.
• Assist senior technical staff with larger projects, complex troubleshooting efforts, infrastructure upgrades, and system migrations.
• Coordinate with vendors, manufacturers, and other technical support personnel to resolve hardware, software, licensing, warranty, and compatibility issues.
• Support internal and external audits and assessments.
• Follow approved cybersecurity, configuration management, media handling, change control, and information system operating procedures.
• Identify recurring technical issues and opportunities to improve system reliability, security, standardization, and operational efficiency.

Requirements & Tech Stack

• Windows desktop and server operating systems.
• Linux (specifically Red Hat Enterprise Linux)
• Microsoft Active Directory and Group Policy Objects.
• VMware vSphere and ESXi.
• Security Technical Implementation Guides (STIGs).
• Ticketing and workflow-management systems.
• Endpoint protection, vulnerability management, logging, and monitoring tools.
• Containerization concepts and lifecycle management (e.g., Podman, Docker).
• Infrastructure automation, scripting, or configuration-management technologies.

Qualifications

• Bachelor’s degree and 2–4 years of prior relevant experience OR a master’s degree with less than 2 years of prior relevant experience. Additional relevant experience may be considered in lieu of a degree.
• Must possess current DoD 8140 IAT II CompTIA Security+ certification or an equivalent.
• Hands-on experience supporting information technology infrastructure, systems administration, cybersecurity operations, or a related technical discipline.
• Experience working with Microsoft Windows desktop and server operating systems.
• Experience installing, configuring, updating, and troubleshooting software applications.
• Experience performing or supporting operating system, application, firmware, and driver updates.
• Experience configuring, deploying, maintaining, or troubleshooting computer hardware.
• Familiarity with patch-management processes.
• Basic understanding of cybersecurity configuration standards, system hardening, vulnerability remediation, and secure administration practices.
• Ability to troubleshoot moderately complex technical issues.
• Ability to create and maintain clear, accurate technical documentation.
• Ability to communicate technical issues and solutions to colleagues.
• Strong organizational, analytical, documentation, and problem-solving skills.
• Ability to work independently on assigned tasks while collaborating effectively.
• Must hold current Secret clearance and be eligible to obtain Top Secret clearance.
• Experience supporting classified, disconnected, or air-gapped environments.