# Senior Linux Systems Administrator

**Company**: GDIT
**Location**: MacDill AFB, FL
**Work arrangement**: onsite
**Experience**: senior
**Job type**: full-time
**Salary**: $110,500 - $149,500
**Category**: IT
**Industry**: Technology

**Apply**: https://gdit.wd5.myworkdayjobs.com/en-US/External_Career_Site/job/USA-FL-MacDill-AFB/Linux-Systems-Administrator_RQ232111-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply
**Canonical**: https://yubhub.co/job/senior-linux-systems-administrator-e14f935c-461/

## Description

As a Senior Linux Systems Administrator, you will play a crucial role in configuring, maintaining, and optimizing Linux-based server environments supporting a large-scale enterprise infrastructure for USCENTCOM.

Responsibilities:

- Configure, deploy, and maintain Linux server environments, including physical and virtual systems.

- Administer Red Hat 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.

Requirements:

- 3+ years of related experience

- Certification: Applicable DoW 8140 or DoW 8570 Certification (CompTIA Security + CE cert)

- 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.

- Proven ability to work collaboratively across multiple IT disciplines.

Desired Skills:

- 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.

Benefits:

- Comprehensive benefits and wellness packages

- 401K with company match

- Competitive pay and paid time off

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

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## Skills

### Required
- Linux Management
- Linux Programming
- IT Troubleshooting
- Red Hat
- CentOS
- Apache
- Nginx
- DNS
- DHCP
- LDAP

### Nice to have
- Red Hat Certified System Administrator (RHCSA)
- ITIL 4 Foundation Certification

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Source: [Apply at gdit.wd5.myworkdayjobs.com](https://gdit.wd5.myworkdayjobs.com/en-US/External_Career_Site/job/USA-FL-MacDill-AFB/Linux-Systems-Administrator_RQ232111-1?utm_source=yubhub.co&utm_medium=jobs_feed&utm_campaign=apply)