Voice Network Engineer at Abacus Technology
Belleville, IL
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Jul 14, 2026
Belleville, IL
Jul 21, 2026
What this job asks for AI summary
A tier-3 engineering role focused on maintaining and developing Cisco-based voice and communications infrastructure at Scott AFB. Day-to-day work involves configuring and enhancing VoIP systems — including Call Manager, Unity, and Session Border Controllers — and building SIP-based connections between the VoIP network and external voice systems. Suits an experienced telecommunications engineer with CCNP Collaboration certification and an active Top Secret clearance.
Senior level · 5+ years · St. Louis, MO-IL · Bachelor's required · Top Secret clearance · Full-time
We read this from the posting text with AI. Skim the description below before ruling yourself out.
Why we read it this way (7)
The role is on-site at Scott AFB (near Belleville/O'Fallon, IL), which falls within the St. Louis, MO-IL CBSA (41180).
The clearance requirement is stated as 'Top Secret' — no SCI or polygraph is mentioned, so this is classified as Top Secret rather than TS/SCI.
CCNP Collaboration certification is explicitly required ('Must be CCNP Collaborations certified') and is treated as a hard gate.
Ribbon VX900, Cisco IM & Presence, Asterisk, Call Manager Express, and SRST appear in the responsibilities/context narrative rather than a dedicated requirements section, so they are marked as preferred rather than hard gates.
The alt SOC 15-1241 (Computer Network Architects) is noted because the role involves designing and developing configurations for voice network infrastructure, not just operating it — however, the tier-3 support and maintenance framing tips the primary classification toward 15-1244.
Ignored 5 non-technology phrase(s) as skills (responsibilities/concepts, not named tools): Cisco Unified Communications Manager, CCNP Collaboration, Cisco Unified Border Element, Cisco Instant Message and Presence, Cisco Call Manager Express.
Requires a Top 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.
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