Linux Systems Engineer
About The Position
GDIT is hiring a Senior Linux Systems Engineer to configure, maintain, and optimize Linux-based server environments supporting USCENTCOM mission-critical systems. The position supports enterprise infrastructure serving more than 5,000 users, 1,000 servers, and 10,000 endpoints. The engineer works with Enterprise Services and infrastructure, network, storage, and security teams to ensure system availability, performance, security compliance, and operational efficiency. The role includes administering Red Hat and CentOS systems; managing Linux services and SSL/TLS certificates; monitoring, troubleshooting, patching, and hardening systems; contributing to upgrades, migrations, and infrastructure modernization; and maintaining technical documentation and reports. The engineer also helps improve Linux environment security, efficiency, scalability, and resilience, supports system policies and best practices, and mentors junior administrators. The position is onsite at MacDill AFB, Florida, with 40 scheduled weekly hours and less than 10% travel required. A Top Secret clearance is currently required, with the ability to obtain Top Secret/SCI; U.S. citizenship is required.
Requirements
- At least 5 years of related experience.
- Applicable DoW 8140 or DoW 8570 certification.
- Demonstrated proficiency administering Red Hat and CentOS Linux systems in enterprise environments.
- Strong experience building, deploying, and maintaining Linux server infrastructures.
- Expertise in system performance tuning, availability management, and security hardening.
- Experience implementing patches, updates, and configuration changes in controlled environments.
- Ability to troubleshoot and resolve complex systems issues under operational constraints.
- Strong documentation skills for system configurations, procedures, and troubleshooting guides.
- Ability to work collaboratively across multiple IT disciplines.
- Must currently possess a Top Secret clearance and be able to obtain Top Secret/SCI.
- U.S. citizenship required.
Nice To Haves
- Red Hat Certified System Administrator (RHCSA) or higher.
- ITIL 4 Foundation Certification.
- Experience supporting USCENTCOM environments and familiarity with mission systems and operational requirements.
- Knowledge of enterprise-scale infrastructure operations.
- Experience mentoring junior administrators and contributing to team development.
Responsibilities
- Configure, deploy, and maintain physical and virtual Linux server environments.
- Administer Red Hat and CentOS Linux systems to maintain stability, performance, and security compliance.
- Configure and manage Linux services, including Apache, Nginx, DNS, DHCP, LDAP, and related system services.
- Monitor system performance and availability, identify potential issues, and resolve them before they affect operations.
- Troubleshoot and resolve complex system issues, including issues without documented solutions.
- Implement system patches, updates, and security hardening in accordance with DoD and organizational policies.
- Manage SSL/TLS certificate lifecycle activities for Linux-based services.
- Collaborate with infrastructure, network, storage, and security teams to design and implement Linux solutions aligned with enterprise requirements.
- Participate in system upgrades, migrations, and deployment of new Linux infrastructure components.
- Ensure incidents, problems, and service requests are tracked, prioritized, escalated, and resolved appropriately.
- Develop and maintain technical documentation, including system configurations, troubleshooting guides, and standard operating procedures.
- Produce reports and data sets to inform leadership about system performance, trends, and improvement opportunities.
- Provide technical mentorship and guidance to junior administrators and team members.
- Support projects to improve the security, efficiency, scalability, and resilience of Linux environments.
- Assist in developing and enforcing system policies and best practices.
- Participate in enterprise initiatives to modernize and standardize infrastructure services.
- Contribute to continuous improvement across Enterprise Services teams.
Benefits
- Comprehensive benefits and wellness packages.
- 401(k) with company match.
- Competitive pay and paid time off.
- Medical plan options, including plans with Health Savings Accounts.
- Dental plan options.
- Vision plan.
- Full flex work weeks where possible.
- Paid time off plans including vacation, sick and personal time, holidays, paid parental, military, bereavement, and jury duty leave.
- Short- and long-term disability benefits.
- Life, accidental death and dismemberment, personal accident, critical illness, and business travel and accident insurance are provided or available.
- Internal mobility team focused on helping employees achieve career goals.
- AI-powered career tool identifying career steps and learning opportunities.
Stand Out From the Crowd
Upload your resume and get instant feedback on how well it matches this job.
What This Job Offers
Job Type
Full-time
Career Level
Senior
Education Level
No Education Listed
