Senior Cisco Voice Engineer - Secure UC Architect

VTG Defense

Virginia (MN)

On-site

USD 120,000 - 150,000

Full time

14 days+

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Job summary

VTG Defense is seeking an experienced Cisco Voice Engineer to support a mission-critical government program. You will design, deploy, secure, and sustain enterprise Cisco Unified Communications across a large, highly secure environment.

Responsibilities include CUCM, Unity Connection, IM&P, UCCX/UCCE deployments, call routing, SIP trunking, SRST, CUBE, PKI management, and site standups. Requires Top Secret with Polygraph and 6+ years of Voice/UC engineering.

Qualifications

Must have 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

Responsibilities

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.