Linux System Administrator - active Top Secret required

General Dynamics Information Technology • Washington, DC

2d • $107,744 - $126,500 • Onsite

About The Position

GDIT is hiring a Linux Administrator to support customer missions in enterprise IT. The role installs, configures, hardens, monitors, and maintains Linux servers and services in production and non-production environments. It also supports system reliability, security, automation, Infrastructure as Code and Configuration as Code practices, CI/CD pipelines, troubleshooting, and accurate technical documentation. The position is onsite in Washington, DC, requires U.S. citizenship and an active Top Secret clearance, and requires eligibility for Top Secret/SCI. DoD 8140 IAT II compliance is required.

Requirements

• Bachelor’s degree in Computer Science, Information Technology, or a related discipline, or an equivalent combination of education and experience.
• At least 5 years of hands-on experience as a Linux System Administrator in enterprise or production environments.
• Strong practical knowledge of major Linux distributions and their administration.
• Proficiency in scripting to automate routine system administration tasks.
• Familiarity with containerization platforms from an operations and support perspective.
• Exposure to DevSecOps concepts and tools, including an understanding of secure software delivery and operational practices.
• Experience administering environments that use Infrastructure as Code (IaC) and Configuration as Code (CaC) tools.
• Solid understanding of networking fundamentals, protocols including TCP/IP, DNS, HTTP, and SSH, and core Linux ecosystem services.
• Must currently possess a Top Secret clearance and be SCI eligible; the posting also states Top Secret/SCI eligibility.
• U.S. citizenship required.
• DoD 8140 IAT II compliant.

Responsibilities

• Install, configure, harden, and maintain Linux-based servers and services in production and non-production environments.
• Monitor system performance and availability, diagnose issues, and take corrective actions to ensure reliability, scalability, and optimal performance.
• Perform system updates, patch management, and security configuration in alignment with organizational and industry best practices.
• Use scripts and standard automation tools to improve routine administrative tasks.
• Troubleshoot complex hardware, software, and network issues affecting Linux systems, collaborating with cross-functional teams as needed.
• Apply, maintain, and enhance Infrastructure as Code (IaC) and Configuration as Code (CaC) solutions using industry-standard tools and methodologies.
• Maintain and support CI/CD pipelines for application deployment, configuration management, and environment consistency.
• Maintain accurate system documentation, including configurations, change records, and standard operating procedures.

Benefits

• Comprehensive benefits and wellness packages.
• 401(k) with company match.
• Competitive pay and paid time off.
• Full-flex work weeks where possible.
• Medical plan options, including plans with Health Savings Accounts.
• Dental and vision plan options.
• Paid time off plans, including vacation, sick and personal time, holidays, and paid parental, military, bereavement, and jury duty leave.
• Short- and long-term disability benefits, life insurance, accidental death and dismemberment, personal accident, critical illness, and business travel and accident insurance.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level