Linux Systems Engineer

General Dynamics IT; Tampa (FL); On-site; USD 111,000 - 150,000; Full time

Job summary

General Dynamics IT is seeking a Senior Linux Systems Engineer in Tampa, FL to support USCENTCOM's enterprise Linux infrastructure. You will configure, deploy, and maintain Linux server environments across physical and virtual platforms, ensuring security compliance and high availability.

You will administer RedHat and CentOS systems, implement patches, manage services (Apache, Nginx, DNS, LDAP), and collaborate with cross-functional teams to meet mission requirements.

Qualifications

• 5+ years of related experience.
• Experience administering RedHat and CentOS Linux systems in enterprise environments.
• DoW 8140 or DoW 8570 certification required.
• US citizenship required.
• Security clearance TS/SCI required.

Responsibilities

• Configure, deploy, and maintain Linux server environments (physical and virtual).
• Administer RedHat and CentOS Linux systems, ensuring stability, performance, and security compliance.
• Configure and manage Linux services such as Apache, Nginx, DNS, DHCP, LDAP.
• Monitor system performance and availability, proactively resolving issues.
• Troubleshoot and resolve complex system issues.
• Implement patches, updates, and security hardening per DoD and organizational policies.
• Manage SSL/TLS certificate lifecycle for Linux services.
• Collaborate with infrastructure, network, storage, and security teams.
• Participate in system upgrades and migrations.
• Develop and maintain technical documentation and SOPs.
• Produce reports on performance and trends for leadership.
• Provide mentorship to junior administrators.
• Support enterprise initiatives to modernize infrastructure.

Skills

CentOS

Linux

Linux Server

Job description

Requisition Details

• Type of Requisition: Regular
• Clearance Level Must Currently Possess: Top Secret
• Clearance Level Must Be Able to Obtain: Top Secret/SCI
• Public Trust/Other Required: None

Job Family

• IT Infrastructure and Operations

Job Qualifications

• Skills: CentOS, Linux, Linux Server
• RedHat Certifications: None
• Experience: 5 + years of related experience
• US Citizenship Required: Yes

Job Description

Advance how our customers operate while you advance your career. Join GDIT as a Senior Linux Systems Engineer and build an impactful career in enterprise IT, collaborating with people who are driven and resourceful like you.

MEANINGFUL WORK AND PERSONAL IMPACT

As a Senior Linux Systems Engineer, the work you'll do at GDIT will be impactful to the mission of USCENTCOM. You will play a crucial role in configuration, maintenance, and optimization of Linux-based server environments supporting a large-scale enterprise infrastructure. This role supports mission-critical systems across an environment of more than 5,000 users, 1,000 servers, and 10,000 endpoints. The administrator will collaborate closely with other Enterprise Services teams to ensure system availability, performance, security compliance, and operational efficiency in support of USCENTCOM mission requirements.

Duties and Responsibilities

• Configure, deploy, and maintain Linux server environments, including physical and virtual systems.
• Administer RedHat and CentOS Linux systems, ensuring stability, performance, and security compliance.
• Configure and manage Linux services such as Apache, Nginx, DNS, DHCP, LDAP, and related system services.
• Monitor system performance and availability, proactively identifying and resolving issues before they impact operations.
• Troubleshoot and resolve complex system issues, including problems without existing documented solutions.
• Implement system patches, updates, and security hardening in accordance with DoD and organizational policies.
• Manage SSL/TLS certificate lifecycle activities supporting Linux-based services.
• Collaborate with infrastructure, network, storage, and security teams to design and implement Linux-based solutions aligned with enterprise requirements.
• Participate in system upgrades, migrations, and the 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 of system performance, trends, and improvement opportunities.
• Provide technical mentorship and guidance to junior administrators and team members.
• Support projects focused on improving 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 efforts across Enterprise Services teams.

WHAT YOU'LL NEED TO SUCCEED

• Certification: Applicable DoW 8140 or DoW 8570 Certification
• Experience: 5+ years of related experience
• Required skills: Demonstrated proficiency administering RedHat 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.
• Proven ability to work collaboratively across multiple IT disciplines.

Desired Skills

• RedHat Certified System Administrator (RHCSA) or higher
• ITIL4 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.

• Security clearance level: TS/SCI
• US citizenship required

GDIT IS YOUR PLACE

At GDIT, the mission is our purpose, and our people are at the center of everything we do.

Growth: AI-powered career tool that identifies career steps and learning opportunities

Support: An internal mobility team focused on helping you achieve your career goals

Rewards: Comprehensive benefits and wellness packages, 401K with company match, competitive pay and paid time off

Community: Award-winning culture of innovation and a military-friendly workplace

#centcomcits #gditprioity

The likely salary range for this position is $110,500 - $149,500. This is not, however, a guar