Senior Linux Systems Administrator

Description

The Leidos Digital Modernization Sector is seeking a Senior Linux Systems Administrator in support of the Air Force National Capital (AFNCR) IT Services program.

At Leidos, we deliver innovative solutions through the efforts of our diverse and talented people who are dedicated to our customer's success. We empower our teams, contribute to our communities, and operate sustainably. Everything we do is built on a commitment to do the right thing for our customers, our people, and our community. Our Mission, Vision, and Values guide the way we do business.

If this sounds like an environment where you can thrive, keep reading!

Join our dynamic team and take ownership of our critical Red Hat Enterprise Linux environment. As a Senior System Administrator, you'll be instrumental in designing, implementing, and maintaining robust and scalable Linux infrastructure that powers our core operations. This includes the maintenance of our VoIP DHCP services and our Red Hat Identity Management (IdM) system. You'll have the opportunity to leverage Red Hat Satellite for efficient system provisioning, patching, and configuration management across our environment - experience with Red Hat Satellite is a must for this role.

Your deep expertise in Red Hat technologies, including demonstrated experience in planning and executing seamless upgrades from Red Hat Enterprise Linux 8 to 9, implementing comprehensive system hardening measures (including hands‑on experience with tools like Evaluate Stig and OpenSCAP), and managing a Red Hat IdM environment, coupled with your ability to develop and maintain automation scripts using tools like Bash and Python, will be crucial in ensuring system stability, performance optimization, and proactive security.

You'll also be responsible for providing clear and concise weekly reports on project status. This is an exciting opportunity to make a significant impact, contribute to strategic projects, and mentor junior team members within a collaborative and forward‑thinking environment.

100% onsite at Joint base Andrews or The Pentagon and requires an active Secret clearance to start.

• 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.

• Bachelor's Degree with 12+ years' experience as a Unix System Administrator - Operational experience with RHEL8 and RHEL
  9. Additional years' experience may be considered in lieu of a degree.
• Must have Active Secret security clearance.
• Requires an…