Linux System Administrator

Columbia Technology Partners, Inc; Annapolis (MD); On-site; USD 80,000 - 120,000; Full time

Job summary

Columbia Technology Partners, Inc is seeking a skilled Linux System Administrator to support enterprise infrastructure in a secure, high‑performance environment. You will manage Linux systems, enterprise storage, and backup solutions while upholding security and compliance standards.

The role emphasizes vulnerability management, system hardening, and ongoing improvements across infrastructure operations, collaborating with engineering, security, and infra teams on upgrades, audits, and incident

Qualifications

• 3+ years of hands-on Linux system administration experience (RHEL, CentOS, or similar).
• Experience with enterprise storage (IBM), backup solutions (Veritas NetBackup), and vulnerability management tools (e.g., Nessus).
• Strong knowledge of Linux patching (YUM), system hardening, security best practices, and scripting (Bash, Python, or similar).

Responsibilities

• Administer, maintain, and optimize Linux-based systems in a production environment.
• Manage IBM Enterprise Storage solutions to ensure availability, performance, and data integrity.
• Configure, monitor, and troubleshoot Veritas NetBackup for enterprise backup and recovery operations.
• Perform system patching and package management using YUM repositories.
• Execute and remediate vulnerability scans using Nessus, ensuring alignment with security requirements.
• Implement and maintain system security configurations, including system hardening and policy enforcement.
• Support STE/STIN-related processes and security frameworks.
• Monitor system performance, troubleshoot issues, and implement proactive improvements.
• Collaborate with engineering, security, and infrastructure teams to support upgrades, audits, and incident response.
• Maintain clear and accurate documentation for system configurations, procedures, and compliance activities.

Skills

Linux system administration

Bash/Python scripting

System hardening

Security best practices

Vulnerability management

Monitoring & performance

Collaboration across teams

Education

Bachelor's degree in Computer Science, Information Technology, or related field (or equivalent experience)

RHCSA or similar Linux certification

Tools

IBM Enterprise Storage

Veritas NetBackup

Nessus

Ansible

Puppet

Job description

Description

Columbia Technology Partners is seeking a skilled Linux System Administrator to support enterprise infrastructure in a secure, high‑performance environment. This role is ideal for a hands‑on professional with experience managing Linux systems, enterprise storage, and backup solutions while maintaining strong security and compliance standards. You will play a key role in ensuring system reliability, supporting vulnerability management efforts, and driving continuous improvements across infrastructure operations.

Key Responsibilities

• Administer, maintain, and optimize Linux‑based systems in a production environment
• Manage IBM Enterprise Storage solutions to ensure availability, performance, and data integrity
• Configure, monitor, and troubleshoot Veritas NetBackup for enterprise backup and recovery operations
• Perform system patching and package management using YUM repositories
• Execute and remediate vulnerability scans using Nessus, ensuring alignment with security requirements
• Implement and maintain system security configurations, including system hardening and policy enforcement
• Support STE/STIN‑related processes and security frameworks
• Monitor system performance, troubleshoot issues, and implement proactive improvements
• Collaborate with engineering, security, and infrastructure teams to support upgrades, audits, and incident response
• Maintain clear and accurate documentation for system configurations, procedures, and compliance activities

Qualifications

• Bachelor's degree in Computer Science, Information Technology, or related field (or equivalent experience)
• 3+ years of hands‑on Linux system administration experience (RHEL, CentOS, or similar)
• Experience with enterprise storage (IBM), backup solutions (Veritas NetBackup), and vulnerability management tools (e.g., Nessus)
• Strong knowledge of Linux patching (YUM), system hardening, security best practices, and scripting (Bash, Python, or similar)

Desired Qualifications

• RHCSA or similar Linux certification
• Experience in high‑availability or mission‑critical environments
• Familiarity with automation tools such as Ansible or Puppet
• Exposure to cloud or hybrid infrastructure environments

Requirements

• U.S. Citizenship is required for all applicants.
• All applicants and employees 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.
• Security clearance with appropriate polygraph is required.
• Certification Requirement: RHCSA or similar Linux certification (desired).

Equal Opportunity Employer

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 ensure equality and promote diversity and inclusion in the workplace. Our policy applies to all employees, job candidates, contractors, stakeholders, partners, and visitors.