System Engineer (Unix) at By Light Professional IT Services LLC
Scott AFB, IL
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Jul 21, 2026
Scott AFB, IL
Jul 24, 2026
What this job asks for AI summary
A systems engineering role supporting IT infrastructure for a U.S. military combatant command, focused on maintaining, configuring, and operating network servers, virtualization systems, desktops, and VDI environments. Day-to-day work spans OS and application management, security and compliance, vulnerability remediation, and second- and third-level support. Suits an experienced infrastructure professional with Linux and Windows Server backgrounds who holds an active DoD Secret clearance.
Senior level · 10+ years · St. Louis, MO-IL · Bachelor's required · 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 $90,896 (middle half $75,658–$107,973).
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 (10)
USTRANSCOM is headquartered at Scott AFB, IL — the role is on-site there, placing it in the St. Louis, MO-IL CBSA (the nearest major metro). The posting does not explicitly name a city.
A DoD Secret clearance is a hard gate; TS/SCI is listed as preferred, so Secret is the minimum required.
The IAT Level II certification (Security+ or equivalent) is required; the specific cert names are listed as interchangeable alternatives.
A Computing Environment (CE) certification is also required; Splunk, Cisco, McAfee, Microsoft, Linux, and Solaris are given as examples of qualifying CE certs — captured as preferred since the specific tool is flexible.
Azure and AWS are listed together as a single experience requirement ('Azure or AWS Cloud Environments') — captured as one skill with the other as an alternative.
Storage systems (SAN/NAS) are described as 'conceptual knowledge' — treated as preferred.
ITILv4 Foundations and IAM Level II certifications (CISSP, CISM, etc.) appear under Preferred Experience/Qualifications.
MCP, CompTIA A+/Network+/Security+, AWS, and Azure are listed as 'desirable' certifications — Security+ and Azure/AWS are already captured under required skills; the others (MCP, CompTIA A+/Network+) are omitted as they name no distinct technology beyond what is already captured.
A Master's degree is listed as preferred, not required; minimum hard requirement is a Bachelor's degree.
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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