UIC Commercial Services · 1 month ago
Sr. VoIP Communications Engineer
US-CA-San Diego
Full-time
Onsite
Senior Level
$120K/yr - $150K/yr
7+ years expUIC Commercial Services is seeking a Sr. VoIP Communications Engineer to assist in designing, deploying, and securing advanced unified communications solutions for military medical treatment facilities. The role involves working with SIP-based voice, messaging, and video communications while ensuring compliance and security in DoD and healthcare networks.
ConstructionShipping
No H1B
Security Clearance RequiredU.S. Citizen Only
Responsibilities
Design and deploy ZuluCall/Comms UCaaS environments across cloud, IL5-ready datacenters, and on-premises microservice clusters
Configure SIP trunks, SBCs, dial plans, IVRs, queues, call recording, voicemail services, and conferencing features
Provision and manage SIP endpoints, including Cisco SIP phones, Poly/Polycom, and Yealink
Implement call flows, auto-attendants, queueing, callback, and ACD routing logic
Configure RedSky/Intrado E911, PIDF-LO, LLDP-MED, and nomadic user location services
Validate routing paths and ensure compliance with RAY BAUM’S Act and Kari’s Law
Implement secure signaling/media (TLS/SRTP), SIP authentication, and secure provisioning
Support SCAP/DISA STIG checks for VoIP-related workloads and UC infrastructure
Coordinate with cybersecurity teams on RMF and ATO technical requirements for voice systems
Work with site network teams to establish VLANs, DHCP, DNS, QoS, PoE, and firewall rules
Assist with WAN redundancy, LTE/Starlink failover, and SD-WAN integrations
Diagnose SIP/RTP quality issues: jitter, latency, MOS, packet loss, codec negotiation
Lead advanced troubleshooting of SIP signaling, RTP media path, SBC policies, and endpoint registration
Provide Tier III support for VoIP, analog gateways, ATAs, SBCs, and softphone applications
Collaborate with government technical teams during pilots, testing cycles, and operational validation
Qualification
Required
7+ years designing, deploying, and supporting VoIP/SIP systems
Strong command of SIP, RTP, SDP, TLS/SRTP and debugging tools (sngrep, Homer, Wireshark)
Deep hands-on experience with FreeSWITCH, Kamailio, or OpenSIPS
Experience with UCaaS or carrier-grade SIP platforms (NetSapiens preferred)
Experience with SBCs such as Ribbon, AudioCodes, TelcoBridges, Oracle, or Sangoma
Strong understanding of E911, ELIN/ERL, RedSky/Intrado, and location services
Proficiency designing dial plans, IVR flows, queue logic, and call routing policies
Strong documentation and customer-facing communication skills
Must be able to lift up to 20 pounds
Must be able to stand and walk for prolonged amounts of time
Must be able to twist, bend and squat periodically
Must be able to obtain a security clearance at the Public Trust level
US Citizenship is a requirement
Preferred
Experience working with ShoreTel, Cisco CUCM, or similar enterprise telephony platforms
Experience in DoD/DHA environments
Understanding of DISA STIGs, SCAP, RMF, or FedRAMP
Linux experience (Ubuntu, Debian, RHEL)
Familiarity with microservice deployments (Docker/Podman/Kubernetes)
Strong analytical and problem-solving skills
Ability to lead technical discussions with customers and partners
Comfortable working independently in high-responsibility environments
Excellent verbal and written communication
Company
UIC Commercial Services
UIC Commercial Services is a division of Ukpeaġvik Inupiat Corporation, the Alaska Native Village Corporation for Utqiaġvik, Alaska.
Founded in 1984Anchorage, Alaska, USA
201-500 employees
Funding
Current Stage
Growth StageLeadership Team
Don Gray
Vice President of UIC Oil & Gas and Marine Services
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