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Linux System Administrator Per Diem Jobs (NOW HIRING)

MANTECH

Linux System Administrator

Laurel, MD · On-site

MANTECH seeks a motivated, career and customer-oriented Linux System Administrator to join our team in Laurel, MD. You will be part of a dedicated team delivering enterprise infrastructure ...

MANTECH

Linux System Administrator

Laurel, MD · On-site

MANTECH seeks a motivated, career and customer-oriented Linux System Administrator to join our team in Laurel, MD. You will be part of a dedicated team delivering enterprise infrastructure ...

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All JobsLinux System Administrator Per Diem Jobs

Linux System Administrator Per Diem information

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$20

$51

$75

How much do linux system administrator per diem jobs pay per hour?

As of Aug 12, 2026, the average hourly pay for linux system administrator per diem in the United States is $51.96, according to ZipRecruiter salary data. Most workers in this role earn between $41.11 and $62.50 per hour, depending on experience, location, and employer.

What is the difference between Linux System Administrator Per Diem vs Linux System Administrator?

AspectLinux System Administrator Per DiemLinux System Administrator
CredentialsTypically requires Linux certifications (e.g., RHCE, CompTIA Linux+)Same as per diem, often with additional certifications preferred
Work EnvironmentContract-based, short-term projects, often on-site or remoteFull-time, permanent employment, on-site or remote
Employer & Industry UsageUsed by government agencies, contractors, or consulting firms for temporary staffingEmployed by companies across industries for ongoing IT infrastructure management

The main difference between Linux System Administrator Per Diem and Linux System Administrator lies in employment type and duration. Per diem roles are temporary, contract-based positions suited for short-term projects, while full-time Linux System Administrators have ongoing responsibilities within organizations. Both roles require similar skills and certifications, but their work arrangements differ significantly.

What is a Linux System Administrator Per Diem?

A Linux System Administrator Per Diem is an IT professional who manages and maintains Linux-based servers and systems on an as-needed, short-term, or daily basis. Unlike full-time administrators, per diem workers are typically hired for specific projects, to cover staff absences, or to handle urgent technical issues. Their responsibilities include installing and configuring Linux servers, monitoring system performance, applying security updates, and troubleshooting problems. This flexible role is common in organizations that need expert Linux support without a permanent hire.

What are the key skills and qualifications needed to thrive as a Linux System Administrator Per Diem?

To thrive as a Linux System Administrator Per Diem, you need strong expertise in Linux operating systems, scripting, and troubleshooting, often backed by a degree in computer science or relevant certifications like RHCE or CompTIA Linux+. Familiarity with tools such as Bash, Ansible, Nagios, and virtualization platforms is typically required. Excellent problem-solving abilities, adaptability, and clear communication skills help you collaborate effectively and respond quickly to urgent system issues. These skills and qualifications are crucial to ensure system reliability, security, and efficient resolution of technical challenges in a flexible, on-call environment.

What are some unique challenges faced by Linux System Administrator Per Diem professionals, and how can they prepare for them?

Linux System Administrator Per Diem roles often involve stepping into dynamic environments with limited onboarding time, making adaptability and quick troubleshooting skills essential. Since per diem administrators frequently work on short-term projects or fill in for absent staff, they must rapidly familiarize themselves with existing system configurations, documentation, and team workflows. Proactively maintaining up-to-date knowledge of various Linux distributions and scripting languages, as well as strong communication skills, can help in collaborating effectively with permanent IT staff. Being organized and detail-oriented is key to ensuring system stability and smooth handoffs at the end of assignments.
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Linux System Administrator Per Diem jobs near you
Infographic showing various Linux System Administrator Per Diem job openings in the United States as of August 2026, with employment types broken down into 1% As Needed, 84% Full Time, 12% Part Time, and 3% Contract. Highlights an 92% Physical, 2% Hybrid, and 6% Remote job distribution, with an average salary of $108,079 per year, or $52 per hour.

Linux System Administrator

CDIT LLC

Annapolis Junction, MD • On-site

Full-time

Re-posted 6 days ago

Job description


We are seeking a skilled and detail-oriented Linux System Administrator to join our IT infrastructure team. The ideal candidate will have strong experience managing enterprise Linux environments and supporting storage, backup, security, and patching systems. This role requires hands-on expertise with IBM Enterprise Storage, Veritas NetBackup, and vulnerability management tools, along with a solid understanding of system hardening and package management.
Key Responsibilities:
  • Administer, maintain, and optimize Linux-based systems in a production environment
  • Manage and support IBM Enterprise Storage solutions, ensuring high availability and performance
  • 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 compliance with security standards
  • Support and maintain STE/STIN processes and environments (as applicable to organizational standards)
  • Implement and maintain system security configurations, including NSF frameworks/policies
  • Monitor system performance, troubleshoot issues, and implement proactive improvements
  • Collaborate with cross-functional teams for infrastructure upgrades, audits, and incident response
  • Maintain documentation for system configurations, procedures, and compliance requirements

Required 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 IBM Enterprise Storage systems
  • Strong knowledge of Veritas NetBackup (NetBackup Administration)
  • Experience with Nessus vulnerability scanning and remediation workflows
  • Proficiency with YUM package management and patching strategies
  • Familiarity with STE/STIN processes and NSF-related security frameworks
  • Solid understanding of Linux security, system hardening, and compliance practices
  • Strong troubleshooting and scripting skills (Bash, Python, or similar)
  • Top Secret Clearance with LS Poly

Preferred Qualifications:
  • Red Hat Certified System Administrator (RHCSA) or equivalent certification
  • Experience in enterprise environments with high availability and disaster recovery requirements
  • Familiarity with automation tools (Ansible, Puppet, or similar)
  • Exposure to cloud or hybrid infrastructure environments

Key Skills:
  • Linux Administration
  • Storage & Backup Management
  • Security & Compliance
  • System Monitoring & Performance Tuning
  • Troubleshooting & Root Cause Analysis
  • Automation & Scripting

Qualifications:
  • Managing/Senior Principal Consultant designs and implements individual components of the Oracle products based on area of expertise. Analyzes detailed requirements and develops detailed design for a specific Oracle product or technology. Provides implementation services for a specific product to include extensions and additional configurations necessary to implement customer unique business processes and workflows. Performs routine health checks and optimizations of system performance, availability, access controls and security. Performs system optimization, performance tuning and assists in capacity planning. Performs proactive analysis of potential issues, risks and roadblocks during system implementation and operations.

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