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Linux Certification Jobs (NOW HIRING)

Acara Solutions

Linux Administrator

Scottsdale, AZ

$74.58/hr

AWS Certified Solutions Architect or AWS SysOps Administrator certification * Experience supporting ServiceNow MID server environments and integrations * Strong troubleshooting and systems ...

Omni Inclusive

Linux SME

Manhattan, NY · On-site

Red Hat Certified Engineer (RHCE) or Oracle Linux certification preferred, * DevOps skills with Ansible (preferred) or Puppet * Strong Scripting Skills (Bash/Shell script or Python) * VMware ...

Everwatch

Linux Systems Administrator

Annapolis Junction, MD · On-site

$86.54 - $110.58/hr

DoD 8570-Compliant IAT Level II or III Certification, such as Security+ Certification Nice If You Have: * Experience creating Linux-based solutions for customer requirements * Experience using health ...

Everwatch

Linux Systems Administrator

Annapolis Junction, MD · On-site

$86.54 - $110.58/hr

DoD 8570-Compliant IAT Level II or III Certification, such as Security+ Certification Nice If You Have: * Experience creating Linux-based solutions for customer requirements * Experience using health ...

Everwatch

Linux Systems Administrator

Annapolis Junction, MD · On-site

$86.54 - $110.58/hr

DoD 8570-Compliant IAT Level II or III Certification, such as Security+ Certification Nice If You Have: * Experience creating Linux-based solutions for customer requirements * Experience using health ...

Everwatch

Linux Systems Administrator

Annapolis Junction, MD · On-site

$86.54 - $110.58/hr

DoD 8570-Compliant IAT Level II or III Certification, such as Security+ Certification Nice If You Have: * Experience creating Linux-based solutions for customer requirements * Experience using health ...

Quadax

HP-UX/UNIX/Linux Administrator

Cleveland, OH · On-site

$60K - $75K/yr

Certifications such as RHCSA, RHCE, or CompTIA Linux+ preferred * Experience with HP-UX and enterprise UNIX environments * Knowledge of storage systems (SAN/NAS) * Strong analytical and problem ...

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Linux Certification information

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How much do linux certification jobs pay per hour?

As of Jul 8, 2026, the average hourly pay for linux certification in the United States is $55.32, according to ZipRecruiter salary data. Most workers in this role earn between $50.24 and $59.38 per hour, depending on experience, location, and employer.
Infographic showing various Linux Certification job openings in the United States as of July 2026, with employment types broken down into 2% As Needed, 73% Full Time, 18% Part Time, 1% Temporary, and 6% Contract. Highlights an 96% Physical, 1% Hybrid, and 3% Remote job distribution, with an average salary of $115,062 per year, or $55.3 per hour.
Linux Subject Matter Expert (SME)

Linux Subject Matter Expert (SME)

DAn Solutions

Bethesda, MD

Full-time

Re-posted 6 days ago

Job description

Position Contingent on Funding/Award

We are seeking an experienced Linux Subject Matter Expert (SME) to provide advanced systems engineering and operational support for CDSSF Cross Domain Shared Services Framework within a secure Defense Intelligence Agency (DIA) environment. This role is embedded with our Cross Domain Solutions (CDS) team and is responsible for maintaining, hardening, troubleshooting, and optimizing Linux-based systems across multiple domains and mission enclaves.

The ideal candidate will have a deep understanding of Red Hat Enterprise Linux (RHEL), system hardening (STIG), cross domain security architectures, and the accreditation processes necessary to support Top Secret/Sensitive Compartmented Information (TS/SCI) systems.

Key Responsibilities:

  • Lead system engineering, patching, configuration, and lifecycle maintenance of RHEL/CentOS/Oracle Linux systems supporting CDS environments.
  • Implement and maintain DISA STIG-compliant baselines using automation tools (e.g., Ansible, SCAP, Puppet).
  • Collaborate with CDS engineers, Information Assurance personnel, and enclave leads to meet ATO/RMF compliance.
  • Troubleshoot kernel-level issues, performance bottlenecks, and cross-domain interface stability.
  • Provide SME-level support for SE Linux, LDAP/Kerberos, and auditing solutions (e.g., syslog, Splunk forwarders).
  • Manage OS provisioning, virtual infrastructure (e.g., VMware or KVM), and baseline image creation for cross-domain enclaves.
  • Assist with developing and maintaining infrastructure-as-code configurations and custom scripts (Bash, Python).
  • Serve as Tier III escalation for complex OS issues affecting CDS reliability or availability.
  • Support enclave isolation and guard-side interface requirements under strict security policies.
  • Document engineering decisions, operational procedures, and system configurations for cross-team knowledge sharing and accreditation packages.

Required Qualifications:

  • U.S. Citizen with active TS/SCI clearance and CI Polygraph (or ability to obtain).
  • 8+ years of experience administering Linux systems in a secure, mission-critical environment.
  • 3+ years supporting cross-domain or multi-enclave environments (CDS, Garrison, SMART.NeXT, CDSSF).
  • Advanced knowledge of RHEL 7/8/9, including system hardening and kernel-level tuning.
  • Experience with automation frameworks and scripting languages (Ansible, Bash, Python).
  • Familiarity with RMF/ATO processes and audit log management.
  • Strong understanding of networking (TCP/IP, firewalls, VLANs, DNS) as it relates to Linux systems.

Desired Qualifications:

  • DoD 8570 IAT Level II or III certification (Security+ CE, CASP+, CISSP).
  • Red Hat Certified Engineer (RHCE) or similar Linux certification.
  • Familiarity with CDS guard technologies (Radiant Mercury, Data Diode, Garrison, etc.).
  • Experience with hypervisors and virtual infrastructure supporting isolated environments.
  • Knowledge of Zero Trust, enclave segmentation, and compartmentalized architectures.

Apply