Cyber Infrastructure Support

Leidos•Omaha, NE

6d•Onsite

About The Position

Leidos' Corporate Information Security Office (CISO) is hiring a Cyber Infrastructure Support professional in its Omaha, Nebraska office. The position supports the testing, implementation, deployment, maintenance, and administration of classified cyber systems, networks, and supporting infrastructure hardware and software. It involves hands-on systems administration and infrastructure support across Windows and Linux environments, including work in a classified, air-gapped environment. All work is performed onsite in Omaha. Candidates must hold an active Secret clearance and be eligible to obtain a Top Secret clearance after hire. The role may include a combination of duties to maintain reliable, secure, and properly configured information systems and supporting infrastructure. The successful candidate works independently on moderately complex assignments and collaborates with system administrators, cybersecurity personnel, engineers, program management, and other technical stakeholders.

Requirements

Bachelor’s degree and 2–4 years of prior relevant experience, or a master’s degree and less than 2 years of prior relevant experience; additional relevant experience may be considered in lieu of a degree.
Current DoD 8140 IAT II CompTIA Security+ certification or an equivalent certification satisfying applicable position and customer requirements.
Current Secret clearance and eligibility to obtain a Top Secret clearance.
Hands-on experience supporting IT infrastructure, systems administration, cybersecurity operations, or a related technical discipline.
Experience 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, including testing, deployment, validation, exception handling, and documentation.
Basic understanding of cybersecurity configuration standards, system hardening, vulnerability remediation, and secure administration practices.
Ability to troubleshoot moderately complex technical issues using logs, diagnostic tools, documentation, and established technical practices.
Ability to create and maintain clear, accurate technical documentation.
Ability to communicate technical issues, findings, and recommended solutions to colleagues across multiple technical disciplines.
Strong organizational, analytical, documentation, and problem-solving skills.
Ability to work independently on assigned tasks and collaborate with senior technical staff, Information Assurance personnel, engineers, and program leadership.

Nice To Haves

Familiarity with Windows Server installation, configuration, maintenance, patching, and troubleshooting.
Familiarity with Microsoft Active Directory and Active Directory Users and Computers.
Familiarity with Group Policy concepts and applying security and configuration settings through Group Policy Objects.
Familiarity with Red Hat Enterprise Linux or a comparable Linux operating system.
Familiarity with VMware vSphere and ESXi virtualization technologies.
Familiarity with STIGs or comparable security configuration baselines.
Familiarity with Kubernetes architecture, administration, or application deployment.
Familiarity with containerization concepts and container lifecycle management.
Familiarity with container images, registries, orchestration, persistent storage, networking, and security considerations.
Familiarity with infrastructure automation, scripting, or configuration-management technologies.
Previous experience supporting classified, disconnected, or air-gapped information systems.
Experience administering or supporting Red Hat Enterprise Linux systems.
Experience with VMware vSphere, ESXi, or comparable virtualization platforms.
Experience creating, modifying, testing, or troubleshooting Group Policy Objects.
Experience implementing or assessing systems against STIGs.
Experience using SCAP Compliance Checker or comparable security compliance-assessment tools.
Experience with Trellix endpoint security, application control, device control, or related enterprise security products.
Experience using Splunk or a comparable centralized logging and analysis platform.
Experience using enterprise ticketing or workflow software such as Jira, ServiceNow, or a comparable platform.
Experience using Podman, Docker, or comparable container-management technologies.
Basic familiarity with Microsoft Azure services, administration, or cloud architecture.
Basic familiarity with Amazon Elastic Kubernetes Service or other managed Kubernetes platforms.
Additional relevant technical or cybersecurity certifications, such as CompTIA Network+, Linux+, CySA+, Microsoft, Red Hat, VMware, Cisco, Kubernetes, or similar credentials.

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, including identifying updates, coordinating testing, scheduling deployment, validating installations, and documenting completion.
Install and validate firmware, driver, and hardware-management updates for servers, workstations, storage devices, network-connected equipment, and peripherals.
Support secure transfer, validation, scanning, and installation of software and updates in classified or air-gapped environments.
Configure and deploy servers, workstations, peripheral devices, and other IT equipment according to approved build documentation and security requirements.
Perform hardware installation, replacement, troubleshooting, repair coordination, and lifecycle support.
Configure and administer Microsoft Windows Server and associated enterprise services.
Support Microsoft Active Directory administration, including user and computer objects, organizational units, security groups, and permissions.
Assist with developing, testing, implementing, and troubleshooting 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 or deficiencies.
Coordinate with Information Assurance personnel to remediate security findings, configuration deficiencies, patching gaps, and vulnerability scan results.
Support Red Hat Enterprise Linux systems, including installation, configuration, patching, service management, account administration, log review, and troubleshooting.
Support VMware vSphere and ESXi virtual infrastructure, including virtual machine deployment, resource allocation, snapshot management, operating system installation, and basic troubleshooting.
Monitor system health, availability, performance, storage utilization, service status, and other operational indicators.
Troubleshoot outages, degraded performance, authentication issues, application failures, network connectivity problems, and other infrastructure incidents.
Review system, application, security, and infrastructure logs for troubleshooting, event analysis, and incident resolution.
Assist with device discovery, operating system fingerprinting, service scanning, passive scanning, and other approved infrastructure assessment activities.
Support enterprise cybersecurity and infrastructure tools for endpoint protection, vulnerability management, compliance validation, logging, and monitoring.
Create and maintain build procedures, configuration records, system diagrams, inventories, maintenance records, troubleshooting guides, and standard operating procedures.
Document completed work, findings, configuration changes, patching, incidents, and corrective actions in approved ticketing or workflow systems.
Participate in configuration management and change control by preparing implementation details, testing results, validation steps, and rollback procedures.
Maintain hardware and software inventories and update asset records after equipment deployment, transfer, replacement, or disposal.
Support hardware and software refresh activities, including staging, configuration, deployment, data migration, validation, inventory updates, and equipment disposition.
Assist senior technical staff with projects, complex troubleshooting, infrastructure upgrades, system migrations, and technology refresh initiatives.
Coordinate with vendors, manufacturers, and technical support personnel to resolve hardware, software, licensing, warranty, and compatibility issues.
Support audits, assessments, inspections, inventory reviews, and security validation by providing technical evidence and system documentation.
Follow approved cybersecurity, configuration management, media handling, change control, and information system operating procedures.
Identify recurring technical issues, supportability concerns, and opportunities to improve reliability, security, standardization, and operational efficiency.