Sr. Linux System Administrator / System Engineer

Red Arch Solutions; Maryland; On-site; USD 151,000 - 170,000; Full time

Job summary

Red Arch Solutions is looking for a highly experienced Senior Linux System Administrator / System Engineer to support an important mission environment in Maryland. This role requires expertise in Linux system administration, virtualization, and security compliance.

The ideal candidate will have more than 10 years of experience, active TS/SCI with Polygraph certification, and strong knowledge in RHEL/CentOS, VMware, and automation tools. A salary range of $151,000 - $170,000 is offered for this position.

Qualifications

• 10+ years of experience as a Linux System Administrator/Engineer.
• Active TS/SCI with Polygraph required.
• Strong expertise in Linux environments.

Responsibilities

• Administer, maintain, and optimize Linux-based systems.
• Support mission-critical infrastructure focusing on availability and security.
• Implement automation solutions using tools such as Ansible.

Skills

Linux System Administration

Virtualization

Automation

Security Compliance

Troubleshooting

Shell/Python Scripting

Education

Security+ Certification

Tools

RHEL/CentOS

VMware

JBoss

Ansible

Terraform

Oracle Database

Job description

An active TS/SCI with Polygraph is required for this position

Position Overview

We are seeking a highly experienced Senior Linux System Administrator / System Engineer to support a high-visibility mission environment within the Intelligence Community. This role requires deep expertise in Linux system administration, virtualization, automation, and security compliance, along with the ability to operate in a fast-paced, mission-critical setting.

Key Responsibilities

• Administer, maintain, and optimize Linux-based systems (RHEL/CentOS) in a secure enterprise environment
• Support mission-critical infrastructure with a focus on availability, performance, and security
• Create, configure, and manage VMware virtual machines
• Install, configure, and maintain JBoss application environments
• Implement automation solutions using Ansible, Terraform, or similar tools
• Perform system monitoring, troubleshooting, and root cause analysis
• Support security compliance initiatives and system hardening efforts
• Collaborate with cross-functional teams across storage, networking, and security domains
• Provide support for 24x7 operations, including on-call and after-hours response

Required Qualifications

• 10+ years of experience as a Linux System Administrator/Engineer
• Active TS/SCI with Polygraph.
• Strong expertise with Linux (RHEL/CentOS) environments
• Experience with VMware VM creation, configuration, and operations
• Security+ Certification (required)
• Experience supporting IC (Intelligence Community) mission environments

Highly Desired Qualifications

• Active or recent SYS3 Privileged Access
• Extensive experience with JBoss installation, configuration, and administration
• Hands-on experience with automation tools such as Ansible or Terraform
• Storage systems and administration
• Networking fundamentals and infrastructure support
• Security compliance and auditing
• Authentication systems
• Scripting with Shell and/or Python
• Physical server administration
• Experience with Oracle Database and potential DBA exposure
• Familiarity with JSON (JavaScript Object Notation)

Salary range for this position: $151,000 - $170,000