(Linux Administrator) Sr. Specialist, Systems Administration at L3Harris
Tulsa, OK
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Aug 6, 2026
Tulsa, OK
Sep 24, 2026
What this job asks for AI summary
A senior Linux administrator role at a defense contractor in Tulsa, OK, responsible for maintaining a mixed Red Hat Linux and Windows environment, enforcing NIST 800-53 and DISA STIG compliance, and leading local IT projects. The position also carries light supervisory responsibility for two on-site system administrators, making it a blend of hands-on systems administration and team lead duties in a cleared, defense-sector setting.
Senior level · 6+ years · Tulsa, OK · Secret clearance · Full-time
“or” means any one of them counts — you don't need all of them.
We read this from the posting text with AI. Skim the description below before ruling yourself out.
How this req sits in the market our data
Most people in this occupation already list these. Still required — just not what gets you shortlisted.
What the occupation pays Median $86,982 (middle half $74,820–$108,627).
Estimated from BLS employment for this occupation and area, per-skill prevalence across our listing corpus, and published wage benchmarks — as of Aug 7, 2026. It is a model, not a headcount.
Why we read it this way (8)
The minimum experience requirement is 6 years with a Bachelor's degree, 4 years with a Graduate degree, or 10 years with no degree; 6 years is used as the overall years minimum as the lowest qualifying threshold.
The JD separately demands '8 years of experience in/with' a specific list of technologies (Red Hat Linux, networking, shell scripting, troubleshooting, cybersecurity practices) — those years are captured on the individual skills.
The role includes supervisory duties (performance evaluations, budget management for 2 on-site admins), but the primary day-to-day work is clearly hands-on systems administration, so 15-1244 is preferred over 11-3021.
An active Secret clearance is explicitly required; the posting also notes many positions require the ability to obtain a clearance, but the hard gate stated for this role is an active/current Secret.
Automation tools (Satellite, Ansible, Kickstart) are listed under Preferred Additional Skills; Ansible is used as the primary name with the others as alternatives since they serve the same enterprise deployment function in this context.
CompTIA Security+ and CISSP are listed together under Preferred as DoD 8140-approved certifications; they are captured as a single preferred skill with CISSP as an alternative.
Ignored 1 non-technology phrase(s) as skills (responsibilities/concepts, not named tools): Patch management.
Requires a Secret clearance — the cleared population is a small fraction of this occupation, so the real candidate pool is materially smaller than the estimate below, which does not model clearance.
Read the full posting
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