Job Title: Senior Linux/Unix Administrator
Work Location: USSTRATCOM Offutt AFB
Clearance: TS/SCI
Education: Bachelor's 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 environmentsMonitor system performance, availability, and health; provide Tier 2-3 troubleshooting for OS, application, and infrastructure issuesApply patches, updates, and DISA STIGs to ensure compliance with DoD cybersecurity standardsSupport Red Hat Enterprise Linux environments, including Ansible, Satellite, and system automationAssist with deploying and managing virtual machines and storage systems (VMware, NetApp)Maintain accurate system documentation, operational checklists, and configuration recordsFollow established change management and configuration control procedures for all updates and installsProvide system health and status reporting, including patching, compliance, and outage informationRequired Qualifications:
Active Top Secret security clearance and eligible for SCI accessCloud+ or GICSP or SSCP or Security+ or GSEC certification requiredAt least 8 years of hands-on experience administering Linux/Unix systems in secure or enterprise environmentsProficiency with Red Hat Linux, patching, system updates, and configuration managementFamiliarity with VMware environments and NetApp storage solutionsStrong troubleshooting skills with experience providing Tier 2-3 supportAbility to follow supported procedures, change control processes, and maintain documentationExcellent communication and teamwork skills to support mission-critical operationsDesired 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 AutomationTo apply to this position, please go to www.knexus.ai 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 HR@knexus.ai
Read Less