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# Linux System Administrator

- **Company:** TEKSYSTEMS INC.
- **Location:** Richardson, TX, United States
- **Experience:** Expert
- **Salary:** $93,600 - $108,160
- **Contract:** Temporary contract
- **Skills:** Active Directory, Ubuntu (Operating System), Configuration Management, CompTIA Security+, Linux, Hardware Virtualization, Information Systems Security Architecture Professional, Linux System Administration, Networking Basics, Red Hat Enterprise Linux, Ansible, Security Support Provider Interface, Server Administration, Virtualization Technology, Scripting, Virtual Computing, Storage Technologies, Hardware Infrastructure, 3-tier Architectures, CIS Benchmarks, Puppet, Vulnerability Analysis, Vmware
- **Published:** November 4, 2026
- **Apply:** https://www.careercircle.com/jobs/all/all/usa/tx/richardson/ecb57178-2aa4-49cb-a42f-52b1d2185b15

## About the Role

Ansible
Tooling
Scripting
Hardening
Operations
Leadership
Automation
NIST 800-53
Communication
Active Directory
Technical Issues
CompTIA Security+
Virtual Computing
Business Valuation
Security Clearance
Process Improvement
Compliance Auditing
Top Secret Clearance
Linux Administration
Server Administration
Full Stack Development
Vulnerability Scanning
Compliance Remediation
Business Transformation
Hardware Virtualization
Configuration Management
Red Hat Enterprise Linux
Ubuntu (Operating System)
IAT Level II Certification
Troubleshooting (Problem Solving)
Red Hat Certified Engineer (RHCE)
Puppet (Configuration Management Tool)
Red Hat Certified System Administrator (RHCSA)
Certified Information Systems Security Professional
Top Secret-Sensitive Compartmented Information (TS/SCI Clearance)

At least 5 years, Experience: University Degree with a minimum of 2 years of prior relevant experience, an Advanced Degree in a related field, or 5+ years of relevant experience in lieu of a degree.

Technical Skills (Required): Professional experience supporting Linux Systems Administration (RHEL and Ubuntu required), server administration, virtualization technologies (e.g., VMware), networking fundamentals, and compliance frameworks (NIST 800-53, DISA STIG). OpenSCAP and security hardening experience strongly preferred. Ansible experience is heavily preferred.

Certification (Required): Active DoD 8570/8140 IAT Level II certification (e.g., CompTIA Security+) or higher.

Clearance (Required): Active Top Secret Government Security Clearance.

Certifications (Preferred):

o Linux administration certifications (RHCSA, RHCE, Ubuntu, etc.)

o Automation / configuration management certifications (Ansible, Puppet, etc.)

o Security certifications (Sec+, CISSP, etc.)

Additional Details

Environment: Secure Labs / professional environment experience preferred.

Skills

Linux, System administrator, Red hat, Active directory, Vmware, Ansible, Scripting, Automation, Rhel, Infrastructure

Top Skills Details

Linux,System administrator,Red hat,Active directory, Experience: University Degree with a minimum of 2 years of prior relevant experience, an Advanced Degree in a related field, or 5+ years of relevant experience in lieu of a degree.

Technical Skills (Required): Professional experience supporting Linux Systems Administration (RHEL and Ubuntu required), server administration, virtualization technologies (e.g., VMware), networking fundamentals, and compliance frameworks (NIST 800-53, DISA STIG). OpenSCAP and security hardening experience strongly preferred. Ansible experience is heavily preferred.

Certification (Required): Active DoD 8570/8140 IAT Level II certification (e.g., CompTIA Security+) or higher.

Clearance (Required): Active Top Secret Government Security Clearance.

Certifications (Preferred):

o Linux administration certifications (RHCSA, RHCE, Ubuntu, etc.)

o Automation / configuration management certifications (Ansible, Puppet, etc.)

o Security certifications (Sec+, CISSP, etc.)

Additional Details

Environment: Secure Labs / professional environment experience preferred., Individual compensation offered for this position within this range will depend on many factors, including qualifications, skills, relevant experience, job knowledge, geographic location, internal equity, and other pertinent job-related factors.

## Description

As part of a cross-functional team, this role partners closely with organization members to support Linux-focused environments within secure labs. Responsibilities span Tier 1 through Tier 3 support, handling everything from frontline service requests to advanced engineering and troubleshooting.

Tier 1 Frontline Support: Respond to service requests, perform initial triage, gather required information, and provide first-line troubleshooting or escalation for Linux environments.

Tier 2 Intermediate Support: Implement, configure, and maintain Linux solutions, server hardware, virtualization platforms, and networking/storage technologies. Deploy updates and support operational stability efforts.

Tier 3 Advanced Engineering & Security Support: Resolve complex technical issues, handle advanced system escalations, and drive cross-functional resolutions across support levels.

Security, Hardening & Compliance: Utilize OpenSCAP, implement DISA STIG and NIST 800-53 security baselines, and execute automated system hardening and compliance remediation across enterprise assets.

Automation & Security Tooling: Contribute to automation, configuration management (Ansible preferred), and operational stability initiatives using industry-standard sec tools (such as vulnerability scanners and compliance auditing frameworks).

Process Improvement: Participate in the improvement of internal processes using frameworks such as LEAN, ACE, and CORE.

Collaboration & Communication: Build strong working relationships with customers and peers, foster connections with domestic U.S. DT peers, and effectively communicate with Engineering leadership to provide ROI based on project performance.