Sr. Linux System Administrator​/System Engineer

Columbia Technology Partners is looking for a Senior Linux System Administrator / Systems Engineer to support a mission‑critical, IC‑wide service environment across infrastructure, virtualization, and automation technologies. The role offers various shift options (day, weekday evening/night, 12‑hour weekend) and requires hands‑on expertise with Linux (CentOS/RHEL) and related tools.

• 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 experience with JSON

• U.S. Citizenship is required for all applicants. CTP is an equal‑opportunity employer and abides by applicable employment laws and regulations.
• Applicants are subject to random drug testing in accordance with Executive Order 12564.
• Employment is contingent upon successful completion of a security background investigation and polygraph.
• Certification Requirements: DOD 8570 Certification
• This position requires an active Security Clearance with appropriate Polygraph.

• Medical: 3 superior plans with in‑network and out‑of‑network options
• Vision + Dental:
  Free to you, paid in full by CTP
• Retirement: 401(k) – 6% company contribution
• PTO + Leave:
  Generous paid time off, Jury Duty, Bereavement + Military Leave provided
• Career Growth:
  Up to $10,000 for approved career‑related learning, training, education, or tuition
• Life and AD&D Insurance / Short‑Term & Long‑Term Disability:
  Zero cost
• Profit Sharing Bonus:
  End‑of‑year cash added to your bottom‑line
• Referral Bonus Program:
  Incentive ranging from $7,000 to $20,000 depending on referral stage

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. Our EEO policy reflects our commitment to equality and inclusion and applies to all employees, job candidates, contractors, stakeholders, partners, and visitors.