Sr. Linux System Administrator​/System Engineer

Overview

Columbia Technology Partners seeks an experienced Senior Linux System Administrator / Systems Engineer to support a mission‑critical, IC‑wide service environment. This role is ideal for a hands‑on professional with deep Linux expertise who enjoys working across infrastructure, virtualization, and automation technologies in secure, high‑availability environments.

Multiple shift options are available: day shifts, weekday evenings or nights, and 12‑hour weekend shifts (Saturday and Sunday).

• Administer, configure, and maintain Linux systems (CentOS/RHEL) in a production environment
• Install, configure, and support JBoss/Wild Fly application servers
• Build, configure, and manage VMware virtual machines, ensuring optimal performance and availability
• Support system operations within a secure, mission‑driven IC environment
• Assist with automation and configuration management, including use of Ansible where applicable
• Monitor system performance and troubleshoot issues across compute, storage, and network layers
• Support security compliance, authentication mechanisms, and system hardening activities
• Perform scripting and automation tasks using shell and/or Python
• Contribute to physical server administration and infrastructure support as needed
• Collaborate with cross‑functional teams to maintain system stability and meet mission requirements

• 10+ years of Linux administration/engineering (RHEL/CentOS) in enterprise environments
• Strong experience with JBoss/Wild Fly, VMware, and secure system operations
• Proficiency in scripting (Shell/Python) and troubleshooting across infrastructure stacks
• Experience supporting mission‑critical systems with performance and reliability focus
• Familiarity with Ansible, storage, networking, authentication, and security compliance/hardening
• Nice to have:
  Linux certification, basic Oracle DBA exposure, and JSON experience

• U.S. Citizenship required. All applicants are subject to random drug testing and a security background investigation plus polygraph.
• Certification: DOD 8570.
• Active Security Clearance with appropriate polygraph required.

• Medical: 3 superior plans, in‑network and out‑of‑network options.
• Vision & Dental:
  Free to employees, paid in full by CTP.
• Retirement: 401k with 6% company contribution.
• PTO & Leave:
  Generous paid time off, including customizable leave, jury duty, bereavement, and military leave.
• Career Growth:
  Up to $10,000 for approved learning, training, education, and tuition.
• Life & AD&D Insurance, Short‑Term & Long‑Term Disability:
  Zero cost to employee.
• Profit Sharing Bonus:
  End‑of‑year cash added to compensation.
• Referral Bonus Program:
  Tiered bonuses ranging from $7,000 to $20,000 when a referral joins the team.

Columbia Technology Partners is an Equal Opportunity Employer. We consider applicants without regard to race, color, religion, age, national origin, ancestry, ethnicity, gender, gender identity, gender expression, sexual orientation, marital status, veteran status, disability, genetic information, citizenship status, or membership in any other group protected by federal, state, or local law.