Linux System Administrator

London Approach; Springfield (VA); On-site; USD 96,000 - 160,000; Full time

Benefits offered by this job

Base salary up to $160k

Performance bonus opportunities

401(k) employer matching

Profit sharing after 1 year

Comprehensive benefits

Long-term federal mission stability

Job summary

London Approach is seeking an experienced Linux Systems Administrator to support mission-critical government infrastructure in Springfield, VA. The role requires an active Top Secret clearance and fully onsite work five days a week.

You will administer enterprise Linux servers, monitor performance, and resolve complex issues while ensuring uptime, security, and system integrity in a secure federal environment. This is a direct-hire, full-time opportunity offering growth and stability.

Qualifications

• Strong experience administering Linux systems in production.
• Proficiency with Linux CLI and shell scripting.
• Experience with security, patching, and vulnerability remediation.
• Understanding of TCP/IP, DNS, SSH, firewalls and related protocols.
• Able to work independently in demanding environments.

Responsibilities

• Administer, configure, maintain, and troubleshoot enterprise Linux servers in secure production environments.
• Monitor system performance, availability, resource utilization, and infrastructure health.
• Diagnose and resolve complex Linux OS, networking, storage, and application issues.
• Handle escalated incidents, perform root-cause analysis, and implement long-term solutions.
• Manage system patching, security configurations, and vulnerability remediation per federal requirements.
• Develop automation scripts using Bash or Python to improve operations.
• Support system deployments, configuration management, and infrastructure improvements.
• Collaborate with engineering, cybersecurity, and infrastructure teams to maintain secure systems.
• Maintain technical documentation, SOPs, and system configuration records.

Skills

Linux administration

Shell scripting

Troubleshooting

Security & patching

Networking fundamentals

Independent worker

Onsite work

Job description

Location: Springfield, VA - 100% Onsite

Salary: Up to $160,000 Base + Bonus

Clearance Required: Active Top Secret (TS)

Employment Type: Full-Time, Direct Hire

Position Overview

We are seeking an experienced Linux Systems Administrator to support and maintain mission-critical infrastructure within a secure federal government environment. This position is ideal for a technically strong Linux professional who enjoys hands-on systems administration, troubleshooting complex infrastructure issues, and ensuring the reliability, security, and performance of enterprise Linux environments.

The successful candidate will have extensive experience administering Linux systems in production environments, resolving escalated technical issues, and supporting infrastructure operations where security, uptime, and system stability are essential.

This is a fully onsite position in Springfield, VA, requiring an active Top Secret security clearance.

Key Responsibilities

• Administer, configure, maintain, and troubleshoot enterprise Linux servers and infrastructure in secure production environments.
• Monitor system performance, availability, resource utilization, and overall infrastructure health.
• Diagnose and resolve complex Linux operating system, networking, storage, and application-related issues.
• Handle escalated technical incidents, perform root cause analysis, and implement long-term solutions.
• Manage system patching, updates, security configurations, and vulnerability remediation in accordance with federal security requirements.
• Develop and maintain automation scripts using Bash, Python, or similar scripting languages to improve operational efficiency.
• Support system deployments, configuration management, and infrastructure improvements.
• Collaborate with engineering, cybersecurity, and infrastructure teams to maintain secure and reliable systems.
• Maintain technical documentation, standard operating procedures, and system configuration records.

Required Qualifications

• Active Top Secret security clearance is mandatory.
• Strong professional experience administering Linux systems in enterprise or production environments.
• Extensive hands-on experience with Red Hat Enterprise Linux (RHEL) or comparable Linux distributions.
• Strong troubleshooting skills across operating systems, servers, storage, and networking.
• Experience managing system security, user permissions, patching, and vulnerability remediation.
• Proficiency in Linux command-line administration and shell scripting.
• Experience supporting business-critical or mission-critical infrastructure.
• Understanding of networking fundamentals, including TCP/IP, DNS, SSH, firewalls, and related protocols.
• Ability to work independently, prioritize technical issues, and resolve complex problems in demanding environments.
• Ability to work onsite in Springfield, VA, five days per week.

Preferred Technical Experience

• Automation and configuration management using Ansible, Puppet, Chef, or Terraform.
• Experience with DevOps methodologies, CI/CD pipelines, or infrastructure automation.
• Virtualization technologies such as VMware or KVM.
• Containerization technologies including Docker, Kubernetes, or OpenShift.
• Experience supporting classified government systems or DoD environments.
• Familiarity with DISA STIGs, system hardening, and federal cybersecurity compliance standards.
• Experience with monitoring and logging tools such as Splunk, Nagios, Grafana, or similar platforms.
• CompTIA Security+, RHCSA, RHCE, or other relevant technical certifications.
• Base Salary: Up to $160,000 annually
• Performance Bonus: Additional bonus opportunities
• 401(k): Employer matching contributions
• Profit Sharing: Eligibility after one year of employment
• Comprehensive Benefits: Employer-sponsored benefits package
• Employment Stability: Long-term opportunity supporting secure, mission-critical government technology environments

Additional Information

This opportunity is best suited for a hands-on Linux Systems Administrator who thrives in technically demanding, security-focused environments. We are looking for someone who can take ownership of production systems, independently troubleshoot complex issues, and contribute to the continued stability and improvement of critical infrastructure.

Candidates must hold an active Top Secret clearance and be available to work fully onsite in Springfield, Virginia.