Senior Cisco CUCM & Voice Collaboration Engineer

globalhr; Largo (FL); On-site; USD 87,000 - 165,000; Full time

Benefits offered by this job

Medical, dental, vision insurance

401(k) with company match

Tuition reimbursement

Employee assistance program

Job summary

RTX, a leading aerospace and defense company, is seeking a Senior Cisco Unified Communications Engineer to design, administer, and sustain enterprise voice and collaboration environments. The role focuses on Cisco CUCM, Unity Connection, VOIP infrastructure, SIP, and conferencing, with Tier III technical leadership across upgrades and lifecycle management.

Onsite in Largo, FL, the position requires an active TS/SCI clearance.

Qualifications

• Degree in Science, Technology, Engineering or Mathematics (STEM) with 5+ years of relevant experience, or advanced degree with 3+ years.
• Active and transferable TS/SCI clearance prior to start date.
• DoD 8570 IAT Level II certification (Security+ or CISSP preferred).
• Experience with Cisco CUCM, Unity Connection, SIP, dial plans, voice gateways, SBCs, conferencing.
• Experience securing DoD or regulated environments with DISA STIGs and cybersecurity assessments.
• Experience leading CUCM/Unity upgrades, migrations, and change management.

Responsibilities

• Configure, administer, and maintain CUCM clusters for enterprise and classified environments.
• Manage Unity Connection voicemail systems, user provisioning, and voicemail integrations.
• Configure dial plans, route patterns, SIP trunks, voice gateways, and conferencing.
• Provide Tier III troubleshooting for voice, signaling, and voice quality issues.
• Plan upgrades, patches, and lifecycle management for CUCM and Unity Connection.
• Ensure DISA STIG compliance and cybersecurity hardening across platforms.

Skills

CUCM administration

VoIP engineering

SIP trunking

DISA STIG compliance

DoD security clearance

Education

Bachelor's degree in STEM

Advanced degree in related field

Tools

CUCM

Unity Connection

SBCs

VoIP gateways

Conference platforms

Job description

RTX, a leading aerospace and defense company, is seeking a Senior Cisco Unified Communications Engineer to design, administer, and sustain enterprise voice and collaboration environments. The role focuses on Cisco CUCM, Unity Connection, VOIP infrastructure, SIP, and conferencing, with Tier III technical leadership across upgrades and lifecycle management.

Onsite in Largo, FL, the position requires an active TS/SCI clearance.