Senior LinuxUnix Administrator

Omaha, NE - USA

Monthly Salary: Not Disclosed

Posted on: 15 hours ago

Vacancies: 1 Vacancy

Job Summary

Job Title: Senior Linux/Unix Administrator

Work Location: USSTRATCOM Offutt AFB

Clearance: TS/SCI

Education: Bachelors degree in a related field; equivalent work experience may be substituted in lieu of a degree

Experience: 8 years

Certification: Cloud or GICSP or SSCP or Security or GSEC

Schedule: Monday - Friday day shift

Travel: Occasional

Salary: Commensurate with experience

Job Listing Number: NE26001

Overview: S4 is seeking an experienced Senior Unix/Linux OS Administrator to support the USSTRATCOM IT Enterprise at Offutt AFB. This role provides administration operations maintenance troubleshooting and security compliance support across multiple enterprise enclaves including NIPR SIPR TS LAN JWICS and other classified environments.

Key Responsibilities:

Install configure and maintain Linux/Unix operating systems across physical and virtual server environments
Monitor system performance availability and health; provide Tier 2-3 troubleshooting for OS application and infrastructure issues
Apply patches updates and DISA STIGs to ensure compliance with DoD cybersecurity standards
Support Red Hat Enterprise Linux environments including Ansible Satellite and system automation
Assist with deploying and managing virtual machines and storage systems (VMware NetApp)
Maintain accurate system documentation operational checklists and configuration records
Follow established change management and configuration control procedures for all updates and installs
Provide system health and status reporting including patching compliance and outage information

Required Qualifications:

Active Top Secret security clearance and eligible for SCI access
Cloud or GICSP or SSCP or Security or GSEC certification required
At least 8 years of hands-on experience administering Linux/Unix systems in secure or enterprise environments
Proficiency with Red Hat Linux patching system updates and configuration management
Familiarity with VMware environments and NetApp storage solutions
Strong troubleshooting skills with experience providing Tier 2-3 support
Ability to follow supported procedures change control processes and maintain documentation
Excellent communication and teamwork skills to support mission-critical operations

Desired qualifications:

One of the following certifications is preferred: ITIL 4 Foundations; Red Hat Certified Systems Administrator; or Linux Professional Institute Certification Linux Administrator; or CompTIA Linux; or Oracle Certified Professional Oracle Linux System Administrator; or Red Hat Certified Engineer; or Oracle Certified Professional Solaris System Administrator; or Red Hat Certified Specialist in Ansible Automation

To apply to this position please go to and click on Careers to complete an employment application and to upload your resume.

Knexus/S4 offers competitive salaries and a comprehensive benefits package with 401(k) and universal time off. We are an Equal Opportunity Employer-minorities/females/veterans/individuals with disabilities/sexual orientation/gender identity. Knexus/S4 participates in the E-Verify employment verification program. If you are looking for a challenging and rewarding position then we invite you to submit your resume including salary history/requirements. The candidate selected must be able to obtain and maintain the security clearance required by the contract at all times

If you are an individual with a disability or a disabled veteran and need a reasonable accommodation to apply to a position please contact HR by email at

Required Experience:

Senior IC

Job Title: Senior Linux/Unix Administrator Work Location: USSTRATCOM Offutt AFBClearance: TS/SCIEducation: Bachelors degree in a related field; equivalent work experience may be substituted in lieu of a degreeExperience: 8 yearsCertification: Cloud or GICSP or SSCP or Security or GSECSchedule: Monda...