Sr. Linux System Administrator​/System Engineer

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

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.

• 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

• 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

• 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)

• 100% paid employee healthcare premiums. Care First Advantage Best in Class Benefits.
• Halo Scripts Concierge prescription medication service
• Generous PTO.
• 10% 401K 6% match vested day one and up to 4% profit sharing contribution.
• Annualized bonus compensation.
• Spot bonuses for hard work.
• Tuition reimbursement.
• 529 College Saving Plan.
• College Loan Pay Back Program.
• 11 Paid Federal Holidays
• Generous Referral Bonuses.

Red Arch Solutions provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.

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