Systems Administrator - Level 4
Northrop Grumman · Aurora, CO
$129,300–$193,900from the description
Jul 21, 2026
Aurora, CO
Jul 22, 2026
What this job asks for AI summary
A Linux systems administrator role supporting large classified government programs at Buckley Space Force Base. Day-to-day work covers managing multi-user systems across multiple networks, VMware virtualization, security patching, account and access control management, and preparing cybersecurity documentation under an ISSM. The role suits an experienced RHEL administrator who holds an active TS/SCI clearance and a DoD 8570 IAT Level II certification.
Senior level · 8+ years · Denver-Aurora-Lakewood, CO · TS/SCI clearance · Full-time
Advertised as Mid, but the requirements read as Senior.
Posted 2 times — it's one opening, so apply once.
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 $107,401 (middle half $89,864–$133,850). This posting is about at that midpoint.
Estimated from BLS employment for this occupation and area, per-skill prevalence across our listing corpus, and published wage benchmarks — as of Jul 28, 2026. It is a model, not a headcount.
Why we read it this way (7)
The posting is titled 'Systems Administrator – Level 2 or 3', which maps to a mid-level advertised framing; however, the minimum experience requirement (8 years with a Bachelor's, or 4 years of additional experience in lieu of a degree) and the scope of responsibilities (large classified government contracts, minimal supervision, independent problem-solving) support a Senior classification.
Degree requirement is marked None because the JD explicitly accepts 4 additional years of experience in lieu of any degree.
DoD 8570 IAT Level II certification (e.g., Security+ CE) is listed as a hard requirement but with a 6-month grace period to obtain it; it is still treated as a gate condition of continued employment.
VMware/virtualization experience appears in the body of the responsibilities section with firm language ('Knowledge and experience with VMware and virtualization') and is treated as a hard gate.
Active Directory, Windows Server, and UNIX appear under the Preferred Qualifications section and are marked accordingly.
An active TS/SCI clearance is explicitly required at time of application — not merely the ability to obtain one.
Requires a TS/SCI 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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