We are seeking experienced Cisco Voice Engineers to support a mission critical, technology driven program for a key Government customer. This role focuses on designing, deploying, securing, and sustaining enterprise level Cisco Unified Communications solutions across a complex, highly secure environment.
What will you do?* Design, test, and deploy new Cisco Voice infrastructure (CUCM, Unity Connection, IM&P, UCCX).
* Implement next generation voice system technologies and support first article engineering.
* Participate in security accreditation activities for all voice systems.
* Manage PKI/certificate requirements across Cisco UC components.
* Perform system upgrades, patching, and lifecycle maintenance for hardware and software.
* Provide engineering support for new site standups, including dial plan design and endpoint provisioning.
* Design, test, and deploy call center technologies (UCCX/UCCE), including user training and transition planning.
* Execute tasks related to call routing, SIP trunking, SRST, CUBE, and gateway configuration.
* Collaborate with customers and internal teams to gather and refine system requirements.
* Ensure compliance with enterprise standards, policies, and security procedures.
* Work within a large scale enterprise IT environment with responsibilities specific to Cisco Voice and Unified Communications.
* Partner with network engineering and telecom teams on integration activities involving telephony, call center systems, and network infrastructure.
* Support secure communications devices and infrastructure, including VoIP phones, STEs, Viper phones, encryption devices, POTs/ISDN/leased lines, conference bridges, and call management servers.
* Must have a Top Secret Clearance with Polygraph
* Bachelor's or Master's degree in Computer Science, IT, Engineering, or related field
* Minimum of six (6) years of progressive experience in Voice/UC engineering
* Expert-level proficiency in SIP signaling and call flows
* Expert-level proficiency in Secure Real Time Transport Protocol (SRTP)
* Expert-level proficiency in SIP, MGCP, and H.323
* Expert-level proficiency in TCP/IP networking
* Expert-level proficiency in MPLS transport environments
* Expert-level proficiency in DNS and DHCP
* Expert-level proficiency in RTP media handling
* Demonstrated experience leading enterprise-scale voice deployments and modernization efforts
* Proven ability to troubleshoot complex, multi-layered call routing and signaling issues
* Strong communication skills for stakeholder engagement, documentation, and technical leadership
* Expertise in SIP signaling, call flows, and multi-vendor integration
* Hands-on experience with H.323 in mixed protocol environments
* Cisco Certified Collaboration Professional (CCCP) or equivalent Cisco Collaboration certifications
* CCNP Collaboration certification
* CCIE Collaboration certification (highly desirable)
* Avaya Communications certification or experience supporting Avaya platforms in hybrid Cisco/Avaya environments
* Experience with secure communications devices such as VoIP endpoints, STEs, Viper phones, and encryption devices
* Familiarity with government security accreditation processes and PKI/certificate management
* Experience designing or supporting call center technologies (Cisco UCCX/UCCE or Avaya equivalents)
* Prior experience in a DoD, IC, or other high-security environment
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