Linux System Administrator - active Top Secret required

General Dynamics Information Technology, Inc.; Washington (District of Columbia); On-site; USD 105,000 - 135,000; Full time

Benefits offered by this job

401K with company match

Paid time off

Competitive benefits

Job summary

General Dynamics Information Technology, Inc. is seeking a Linux Administrator to maintain Linux-based servers and services across production and non-production environments.

You will implement automation, monitor performance, and ensure secure, scalable operations in collaboration with cross-functional teams. The role requires 5+ years of hands-on Linux administration, scripting capabilities, and experience with IaC/CaC, CI/CD, and DevSecOps concepts.

Qualifications

• Bachelor’s degree or equivalent in CS/IT or related field.
• 5+ years hands-on Linux admin experience in enterprise/ production environments.
• Strong knowledge of major Linux distributions and administration.
• Scripting to automate routine tasks.
• Familiarity with containerization platforms from an operations perspective.
• Exposure to DevSecOps concepts and secure software delivery practices.
• Experience with Infrastructure as Code (IaC) and Configuration as Code (CaC).
• Solid networking fundamentals (TCP/IP, DNS, HTTP, SSH).

Responsibilities

• Install, configure, harden, and maintain Linux servers and services in prod and non-prod environments.
• Monitor performance, diagnose issues, and ensure reliability and scalability.
• Apply updates, patch management, and security configurations.
• Use scripts and automation tools to streamline tasks.
• Troubleshoot hardware, software, and network issues across teams.
• Maintain IaC/CaC and CI/CD pipelines for consistency and deployment.
• Keep system documentation up to date.

Skills

Linux System Administration

Scripting

IaC / CaC

CI/CD pipelines

Networking fundamentals

DevSecOps concepts

Documentation

Education

Bachelor’s degree in Computer Science / Information Technology

Tools

Containerization platforms

Job description

Linux Administrator

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

MEANINGFUL WORK AND PERSONAL IMPACT

As a Linux Administrator, the work you’ll do at GDIT will be impactful to the customer’s mission, your duties will include:

• Install, configure, harden, and maintain Linux-based servers and services in production and non-production environments.
• Proactively monitor system performance and availability, diagnose issues, and implement corrective actions to ensure reliability, scalability, and optimal performance.
• Execute regular system updates, patch management, and security configurations in alignment with organizational and industry best practices.
• Use scripts and standard automation tools to streamline and improve routine administrative tasks.
• Troubleshoot and resolve complex hardware, software, and network issues impacting 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 to streamline application deployment, configuration management, and environment consistency.
• Maintain accurate and up-to-date system documentation, including configurations, change records, and standard operating procedures.

WHAT YOU’LL NEED TO SUCCEED

Bring your technology expertise and drive for innovation to GDIT. The Linux Administrator must have:

• Bachelor’s degree in Computer Science, Information Technology, or a related discipline; or equivalent combination of education and experience.
• Minimum of 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 for automating routine system administration tasks.
• Familiarity with containerization platforms from an operations and support perspective.
• Exposure to DevSecOps concepts and tools, with an understanding of secure software delivery and operational practices.
• Experience administering environments that leverage Infrastructure as Code (IaC) and Configuration as Code (CaC) tools.
• Solid understanding of networking fundamentals, protocols (TCP/IP, DNS, HTTP, SSH), and core services in a Linux ecosystem.

REQUIRED

• Clearance Level Must Currently Possess: Top Secret and SCI eligible
• Location: Onsite
• Required: US Citizenship
• Required: DoD 8140 IAT II compliant

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 thatidentifiescareer 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, competitivepayand paid time off.
• Flexibility: Full-flex work week to own your priorities.
• Community: Award-winning culture of innovation and a military-friendly workplace.

OWN YOUR OPPORTUNITY

Explore an enterprise IT career at GDIT andyou’llfind endless opportunities to grow alongside colleagues who share your desire to drive operations forward.