Senior Linux Systems Engineer — Enterprise DoD Infra

General Dynamics Information Technology, Inc.; Florida; On-site; USD 111,000 - 150,000; Full time

Benefits offered by this job

Medical plan options

401K with company match

Paid time off

Job summary

GDIT seeks a Senior Linux Systems Engineer to configure, deploy, and maintain Linux server environments across a large enterprise. You will administer Red Hat and CentOS systems, implement security hardening, and collaborate with cross-functional teams to ensure availability and performance for USCENTCOM missions.

The role emphasizes system upgrades, patch management, documentation, and mentorship of junior administrators within a DoD-focused environment. TS/SCI US citizenship is required.

Qualifications

• Experience administering Red Hat and CentOS Linux in enterprise environments.

Responsibilities

• Configure, deploy, and maintain Linux server environments (physical and virtual).
• Administer Red Hat and CentOS systems for stability and security.
• Configure and manage Linux services such as Apache, Nginx, DNS, DHCP, LDAP.
• Monitor performance and availability, proactively resolve issues.
• Patch, update, and harden systems per DoD and policy.
• Collaborate with infrastructure, network, storage, and security teams.
• Develop technical documentation and troubleshooting guides.
• Provide mentorship to junior admins.

Skills

Linux administration

Red Hat & CentOS

Security hardening

System performance tuning

Troubleshooting complex systems

Documentation

Mentorship

Policy compliance (DoD)

Tools

Apache

Nginx

DNS

DHCP

LDAP

Job description

GDIT seeks a Senior Linux Systems Engineer to configure, deploy, and maintain Linux server environments across a large enterprise. You will administer Red Hat and CentOS systems, implement security hardening, and collaborate with cross-functional teams to ensure availability and performance for USCENTCOM missions.

The role emphasizes system upgrades, patch management, documentation, and mentorship of junior administrators within a DoD-focused environment. TS/SCI US citizenship is required.