Sr. Linux System Administrator / System Engineer

**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 The Red Arch Solutions pay range for this job level is a general guideline only and not a guarantee of compensation or salary. Determination of official compensation or salary relies on several factors including, but not limited to, level of position, job responsibilities, geographic location, scope of relevant work experience, educational background, certifications, contract‑specific affordability, organizational requirements, alignment with local internal equity as well as alignment with market data. Red Arch Solutions Benefits Snapshot: 100% paid employee healthcare premiums. CareFirst Advantage Best in Class Benefits. HaloScripts 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. Have more questions about Red Arch? Email us at View email address on click.appcast.io #J-18808-Ljbffr Red Arch Solutions, Inc.