Voice Tier 3 Engineer

About the role

KeenLogic is seeking a Voice Tier 3 Engineer to support the U.S. Air Force’s Executive Airlift Communications Network (EACN). EACN delivers voice, video, and data services to senior U.S. Government leaders aboard executive aircraft through operational gateways at Scott Air Force Base, Joint Base Andrews, and Joint Base Lewis-McChord. A Systems Integration Lab at Scott Air Force Base supports engineering, testing, and validation of changes before operational implementation. This position will provide advanced engineering and technical support for EACN’s Cisco‑based Voice over Internet Protocol environment. The engineer will configure, enhance, secure, and troubleshoot voice systems and develop connections between EACN and external customer voice networks. The role is located at Scott Air Force Base, Illinois, requiring onsite support for the laboratory and operational environment; limited telework is subject to Government approval and mission requirements. Government‑approved travel within the continental United States may be required for technical support and contract activities.

Responsibilities

• Configure, develop, maintain, and enhance the Cisco VoIP environment supporting EACN.
• Apply patches and Security Technical Implementation Guides to supported voice systems.
• Add and support approved capabilities within Call Manager, Cisco Unity, Instant Message and Presence, conferencing systems, and Ribbon VX900 devices.
• Develop configurations and connection methods for Cisco Unified Border Elements, Session Border Controllers, and other SIP‑enabled devices.
• Establish and troubleshoot SIP connections between EACN and customer voice environments, including Call Manager Express, Survivable Remote Site Telephony, and other Cisco VoIP networks.
• Perform or assist with Network Engineering Tier 3 activities, including complex troubleshooting and configuration support.
• Validate applicable voice‑related hardware, software, and configuration changes in the Systems Integration Lab before operational deployment.
• Maintain technical and configuration documentation and support installation guides, configuration training, and troubleshooting procedures.
• Coordinate with Government engineers and gateway personnel to resolve service issues and sustain voice capabilities across the laboratory and operational environments.

Qualifications

• Top Secret security clearance.
• 5+ years of VoIP experience.
• Cisco voice certification with a concentration on Cisco Unified Call Manager (CUCM) that includes the 350‑801 Implementing and Operating Cisco Collaboration Core Technologies (CLCOR) exam.
• Ability to perform onsite duties at Scott Air Force Base and meet applicable DoD workforce and privileged‑access qualification requirements.

Skills

• Cisco Unified Call Manager (CUCM)
• Cisco Unity
• Instant Message and Presence
• Teleconference bridges
• Ribbon VX900 devices
• Cisco Unified Border Elements and Session Border Controllers
• SIP connectivity and troubleshooting
• Network Engineering Tier 3 functions
• Laboratory testing, documentation, and configuration‑control practices

Benefits

• Health, dental, and vision insurance
• Paid time off (PTO)
• Paid federal holidays
• 401(k) plan
• Life insurance

Schedule

Monday–Friday, with an assigned schedule within 6:30 AM–5:30 PM Central Time, excluding federal holidays.