Senior Principal Voice Engineer

Northrop Grumman

. Design and implement Cisco voice solutions, including VoIP, VTC, VQ, CMS, Jabber, and other unified communications systems.

Posted 5/22/2026full-timeRedondo Beach • Alabama, California, Illinois, Maryland, Utah • 🇺🇸 United StatesSenior💰 $129,300 - $193,900 per yearWebsite

Tech Stack

Tools & technologies

FirewallsVoIP

About the role

Key responsibilities & impact

Design and implement Cisco voice solutions, including VoIP, VTC, VQ, CMS, Jabber, and other unified communications systems.
Develop and maintain complex dial plans, route patterns, translation patterns, route lists, groups, and calling search spaces.
Configure and troubleshoot Cisco Unified Border Element (CUBE) routers for SIP trunking and inter-site voice routing.
Support and troubleshoot video teleconferencing (VTC) systems, including Cisco Telepresence, Room Kits, and integration with third-party platforms.
Monitor and optimize voice/video quality using tolls like Cisco VQM, RTMT, and third-party monitoring platforms.
Perform routine system upgrades, patches, and backups for UC platforms.
Troubleshoot and resolve complex voice-related issues in a timely manner.
Manage UCCX for multiple teams.
Collaborate with cross-functional teams to integrate voice solutions with existing systems.
Provide technical support and training to end-users and IT staff.
Stay updated with the latest industry trends and technologies related to voice communications.
Plan, manage, and implement complex voice designs in support of customer requirements.
Develop technical solutions to complex problems which require the regular use of ingenuity and creativity.
Support teams in project designs to clarify project requirements and provide design solutions, in accordance with standards.
Perform troubleshooting analysis of voice infrastructure and associated systems.
Document voice hardware and software technology components.
Install and configure Cisco voice hardware/software and accompanying technologies.
Provide third-level support and troubleshooting of voice problems, and periodically provide after-hours and weekend support.
Exercise considerable latitude in determining technical objectives of assignment.
Interface regularly with customers and manage customer installation timelines and deliverables to help facilitate successful deployments.
Manage timely resolution of all critical and/or complex problems meeting SLA requirements.

Requirements

What you’ll need

Master's degree with 6 years of relevant experience, or a Bachelor's degree with 8 years of relevant experience, or an Associate's degree with 10 years of relevant experience; a High School diploma (or equivalent) with 12 years of relevant experience may be considered in lieu of a completed degree.
Current U.S. Government 8140 (8570 equivalent) IAT level II baseline certification (example: Security+ CE).
Current U.S. Government Secret level security clearance (at a minimum).
Experience with designing and maintaining LAN/WAN based networks.
Managing routing protocols on large LAN environments.
Experience with Cisco hardware (routers, switches, and firewalls).
Excellent problem-solving skills.

Benefits

Comp & perks

Health insurance coverage
Life and disability insurance
Savings plan
Company paid holidays
Paid time off (PTO) for vacation and/or personal business
9/80 work schedule
401k matching program

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

Cisco voice solutionsVoIPVTCCMSJabberdial plansSIP trunkingCisco Unified Border Element (CUBE)Cisco TelepresenceUCCX

Soft Skills

problem-solvingcollaborationcreativitytechnical supportcommunicationproject managementcustomer managementtroubleshootingdocumentationingenuity

Certifications

Master's degreeBachelor's degreeAssociate's degreeHigh School diplomaIAT level II baseline certificationSecurity+ CEU.S. Government Secret level security clearance