Classified Systems Administrator and ISSO at CACI
Herndon, VA
$103,800–$218,100from the description
Aug 13, 2026
Herndon, VA
Sep 25, 2026
What this job asks for AI summary
This role supports and maintains classified Windows Server infrastructure and virtualization environments for a defense contractor, combining systems administration with Information Assurance (IA) duties under DCSA/NISPOM compliance. Day-to-day work spans managing VMware/Hyper-V/Nutanix platforms, enterprise storage, Active Directory, privileged access tools, and vulnerability remediation, while also serving as an onsite ISSO handling security briefings, data transfers, and Security Impact Analyses. An active Secret clearance and CompTIA Security+ are required.
Senior level · 7+ years · Secret clearance · Full-time
“or” means any one of them counts — you don't need all of them.
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
Rare in this occupation — lead with these, and say what you built with them.
Most people in this occupation already list these. Still required — just not what gets you shortlisted.
What the occupation pays Median $101,310 (middle half $79,725–$129,425). 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 Aug 18, 2026. It is a model, not a headcount.
Why we read it this way (7)
The role is a genuine hybrid of systems administration (primary) and Information Assurance/ISSO duties (secondary). 15-1244 was chosen because the bulk of day-to-day work is operating and maintaining infrastructure; 15-1212 is a close runner-up given the explicit ISSO, DCSA/NISPOM compliance, SIA, and data-transfer responsibilities.
No specific work location is stated in the posting beyond 'Continental US' travel; the CBSA and state fields are left blank.
The clearance requirement is listed as 'Secret' in the job details and body text, though the parenthetical '(TS)' in the qualifications section appears to be a labeling error rather than a true TS requirement — the posting consistently gates on Secret.
A Bachelor's degree is listed as required but explicitly accepts 'equivalent experience,' so the degree requirement is set to None.
Microsoft Exchange, Jira, Confluence, Pure Storage, Dell PowerVault, Synology, RSA, and CyberArk appear in the Responsibilities section (not a formal Required qualifications block), so they are treated as preferred rather than hard gates.
The salary range ($103,800–$218,100/year) is very wide, which CACI attributes to factors including government contract labor categories and geography.
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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