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CDIT LLC · 1 month ago

Linux System Administrator II

Hampton Roads, Virginia, United States

Full-time

Onsite

Entry, Mid Level

2+ years exp

CDIT LLC is an IT Services company seeking a Linux System Administrator II to manage and optimize Linux-based business systems. The role involves overseeing system operations, ensuring compliance with cybersecurity requirements, and providing technical support to users.

Information ServicesInformation TechnologySoftware

No H1B

Security Clearance Required

U.S. Citizen Only

Responsibilities

Install, configure, and maintain Red Hat Enterprise Linux (RHEL) servers in physical and virtual environments

Manage Linux-based enterprise systems supporting Navy shore-based maintenance IT solutions

Optimize system operations and resource utilization to ensure high availability and performance

Perform system capacity analysis, planning, and performance monitoring

Configure and maintain network services including NFS, DNS, NTP, DHCP, and LDAP integration

Implement and manage virtualization platforms (VMware, KVM) hosting Linux systems

Support data center operations and participate in system consolidation initiatives

Implement and maintain Security Technical Implementation Guide (STIG) compliance for Linux systems

Support Risk Management Framework (RMF) compliance activities and security assessments

Configure and manage security controls including firewalls, SELinux, and access control policies

Conduct vulnerability scanning and remediation using tools such as SCAP Compliance Checker and Nessus

Maintain system hardening in accordance with DISA security guidelines

Support security audits and provide documentation for Authority to Operate (ATO) packages

Monitor systems for security incidents and respond to threats in coordination with cybersecurity teams

Manage user accounts, groups, and permissions across enterprise Linux systems

Develop and maintain system automation using shell scripting (Bash), Python, and configuration management tools (Ansible, Puppet)

Implement backup and disaster recovery procedures for critical systems

Troubleshoot and resolve system issues, hardware failures, and software errors

Provide technical assistance and support to end users accessing business systems

Document system configurations, procedures, and problem resolutions

Coordinate with application teams to support middleware and business application deployments

May lead and direct the work of junior system administrators

Collaborate with network engineers, developers, and cybersecurity analysts

Participate in change management and configuration control processes

Support continuous improvement initiatives for IT infrastructure

Coordinate with Government personnel on system requirements and priorities

Qualification

Linux system administrationRed Hat Enterprise LinuxCybersecurity complianceSystem capacity analysisShell scriptingAnsibleRisk Management FrameworkIAT Level III certificationTechnical assistanceCollaboration