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Leidos · 2 days ago

Senior Linux Systems Administrator

Arlington, VA

Full-time

Onsite

Senior Level, Lead/Staff

$116K/yr - $210K/yr

12+ years exp

Leidos is a leader in digital and mission innovations, seeking a Senior Linux Systems Administrator to support the Air Force National Capital IT Services program. The role involves designing, implementing, and maintaining a robust Linux infrastructure, including managing Red Hat systems and ensuring system security and performance optimization.

ComputerGovernmentInformation ServicesInformation TechnologyNational SecuritySoftware

No H1B

Security Clearance Required

U.S. Citizen Only

Responsibilities

Full lifecycle management of our Red Hat systems, including installation, configuration, patching, and upgrades, with a strong emphasis on utilizing Red Hat Satellite to streamline these processes

A key aspect of this role will involve participating in and leading the upgrade of our existing Red Hat Enterprise Linux 8 systems to version 9, ensuring minimal disruption and adherence to best practices

Responsible for the ongoing maintenance and health of our VoIP DHCP services and our Red Hat Identity Management (IdM) system, including user and group management, access controls, and ensuring its overall stability and security

Implementing and maintaining robust system hardening techniques will be a critical part of your daily responsibilities, requiring hands-on experience with security compliance tools such as Evaluate Stig and OpenSCAP to audit, remediate, and ensure adherence to security benchmarks

Troubleshoot complex system issues, perform root cause analysis, and implement effective solutions, often leveraging your scripting skills in Bash and Python to automate repetitive tasks and improve efficiency

Developing and maintaining these scripts to manage system administration, monitoring, and deployment workflows

Collaborating with development and security teams to ensure seamless integration and adherence to best practices is essential, as is providing timely and informative weekly reports on the progress of assigned projects

Your contributions will be vital in maintaining the integrity, security, and availability of our mission-critical Linux infrastructure through effective system management, automation, successful operating system upgrades, the smooth operation of our IdM system, and clear communication

Qualification

Red Hat Enterprise LinuxRed Hat SatelliteSystem hardeningBash scriptingPython scriptingVoIP DHCP servicesRed Hat Identity ManagementEvaluateStigOpenSCAPDell ServersAWSAzureSELINUXPAM configurationDISA environment hardeningRed Hat Certified EngineerVMWare

Required

Bachelor's Degree with 12+ years' experience as a Unix System Administrator – Operational experience with RHEL8 and RHEL9. Additional years' experience may be considered in lieu of a degree

Must have Active Secret security clearance

Requires an current 8140 IAT Level II (Intermediate or Advanced) certificate (CompTIA Security+ or Systems Security Certified Practitioner (SSCP))

Training (DISA-US1384 DCWF Linux System Administrator / DISA-US1390 DCWF Windows Systems Administrator)

3+ years deploying Unix in secured environments, i.e., DISA

3+ years using, updating and maintaining Red Hat Satellite

Documenting system processes for Unix environments

HW experience: Knowledge of Dell Servers, iDRAC, AWS and Azure

SW experience: Operating Systems: RHEL8 and RHEL 9

Red Hat Satellite Server and Red Hat PCS Clustering

Experience with running Red Hat systems with SELINUX in 'enforcing' mode

Experience with configuring PAM (Pluggable Authentication Modules) on RHEL to enable 2-factor authentication via RSA and/or Active Directory

DISA environment hardening experience