VoIP Network Engineer / Telecommunications Engineer

CACI; Washington (District of Columbia); On-site; USD 104,000 - 218,000; Full time

Job summary

CACI is seeking an experienced VoIP Network Engineer / Telecommunications Engineer to support the design, installation, operation, and sustainment of a DoD voice network. The role involves end-to-end engineering for enterprise voice, video, conferencing, and telecommunications services within a government setting.

The ideal candidate will have hands-on experience with Cisco IP communications, call-processing technologies, and security, working in a DoD environment with C2 systems.

Qualifications

• Experience in VoIP, IP telecommunications, or enterprise voice environments.
• Hands-on experience installing, configuring, administering, troubleshooting, and maintaining Cisco IP communications technologies.
• Experience with call-processing systems, gateways, IP telephones, voicemail, conferencing, and voice/video communications technologies.
• Knowledge of network monitoring, telecommunications infrastructure, cabling, and system availability practices.

Responsibilities

• Design, install, configure, operate, maintain, and sustain Non-Secure VoIP networks and supporting telecommunications infrastructure.
• Provide systems engineering, technical oversight, documentation, troubleshooting, and lifecycle support for enterprise IP telecommunications services.
• Support Command and Control (C2) communications systems, including conferencing, alert and notification systems, networked voice, video, data, and non‑secure switchboard services.
• Install, configure, administer, and maintain Cisco IP communications systems, call-processing platforms, gateways, IP telephone instruments, voicemail systems, video applications, and voice/video bridging technologies.
• Provide voicemail capabilities including announcements, notifications, forwarding, distribution lists, message storage, automated dialing, and remote retrieval.
• Design and install telecommunications cabling, equipment, hardware, and software to expand or modernize existing services.
• Monitor network status, performance, and alerting systems to maintain real-time availability across locations.
• Provide end-to-end telecommunications connectivity, including equipment placement, infrastructure integration, endpoint installation, and connectivity within customer environments.
• Configure and maintain telecommunications logging, monitoring, and blocking security services; review logs for security or infrastructure improvements.
• Develop recommendations for telecommunications security, reliability, and infrastructure enhancements and coordinate implementation with customer personnel.
• Implement configuration changes, security controls, and rule-based policies across systems.
• Install, operate, and maintain UPS equipment supporting non-redundant VoIP infrastructure for service continuity.
• Apply DoD policies and standards when installing, configuring, administering, and maintaining Cisco IP systems.
• Provide real-time conference scheduling, bridge management, troubleshooting, and connectivity support for global IP and ISDN teleconferencing environments.
• Troubleshoot voice, video, network, hardware, software, and cabling issues and coordinate resolutions across teams.
• Maintain accurate configurations, diagrams, documentation, procedures, and infrastructure records.

Skills

VoIP / IP Telecommunications

Cisco IP communications technologies

Enterprise voice communications

Call-processing systems and gateways

Tools

Cisco IP Communications equipment

VoIP gateways

Job description

Job Title: VoIP Network Engineer / Telecommunications Engineer

Job Category: Information Technology

Time Type: Full time

Minimum Clearance Required to Start: TS/SCI

Employee Type: Regular

Percentage of Travel Required: Up to 25%

Type of Travel: Local

The Opportunity

CACI is seeking an experienced VoIP Network Engineer / Telecommunications Engineer to support the design, installation, operation, maintenance, and sustainment of a government agency’s Non-Secure Voice over Internet Protocol (VoIP) telecommunications network.

The selected candidate will provide end-to-end engineering and operational support for enterprise voice, video, conferencing, and telecommunications services. This position requires hands‑on experience with Cisco IP communications, call‑processing technologies, network infrastructure, telecommunications security, and Command and Control (C2) communications systems within a Department of Defense (DoD) environment.

Responsibilities

• Design, install, configure, operate, maintain, and sustain Non-Secure VoIP networks and supporting telecommunications infrastructure.
• Provide systems engineering, technical oversight, documentation, troubleshooting, and lifecycle support for enterprise IP telecommunications services.
• Support specialized Command and Control (C2) communications systems, including conferencing, alert and notification systems, networked voice, video, data, and non‑secure switchboard services.
• Install, configure, administer, and maintain Cisco IP communications systems, call‑processing platforms, gateways, IP telephone instruments, voicemail systems, video applications, and voice/video bridging technologies.
• Provide voicemail capabilities including recorded announcements, message notifications, forwarding, distribution lists, message storage, automated dialing and reply functions, and remote message retrieval.
• Design and install telecommunications cabling, equipment, hardware, and software required to expand, modernize, or enhance existing network services.
• Monitor network status, performance, and alerting systems to maintain real‑time network availability, including remote applications and hardware supporting geographically dispersed locations.
• Provide end‑to‑end telecommunications connectivity, including equipment placement, infrastructure integration, endpoint installation, and connectivity within and external to customer environments.
• Configure and maintain telecommunications logging, monitoring, and blocking security services; review system logs and identify potential security or infrastructure improvements.
• Develop recommendations for telecommunications security, reliability, and infrastructure enhancements and coordinate implementation with designated customer personnel.
• Implement approved configuration changes, security controls, and rule‑based policies across telecommunications systems.
• Install, operate, and maintain Uninterruptible Power Supply (UPS) equipment supporting non‑redundant VoIP infrastructure to maintain service continuity during facility power disruptions.
• Apply knowledge of DoD telecommunications policies, procedures, security requirements, and technical standards when installing, configuring, administering, and maintaining Cisco IP systems.
• Provide real‑time conference scheduling, bridge management, troubleshooting, and connectivity support for global IP and ISDN teleconferencing environments.
• Troubleshoot voice, video, network, hardware, software, cabling, and telecommunications connectivity issues and coordinate resolution across technical teams as required.
• Maintain accurate system configurations, network diagrams, technical documentation, operational procedures, and infrastructure records.

Qualifications

• Demonstrated experience supporting VoIP, IP telecommunications, or enterprise voice communications environments.
• Hands‑on experience installing, configuring, administering, troubleshooting, and maintaining Cisco IP communications technologies.
• Experience supporting call‑processing systems, gateways, IP telephones, voicemail, conferencing, and voice/video communications technologies.
• Knowledge of network monitoring, telecommunications infrastructure, cabling, and system availability practices.
• Experience troubleshooting complex telecommunications, network, hardware, and software issues.
• Knowledge of telecommunications security practices, including logging, monitoring, access controls, and rule‑based policies.
• Experience developing and maintaining technical documentation, network diagrams, system configurations, and operating procedures.
• Ability to support enterprise and geographically dispersed telecommunications environments.
• Working knowledge of DoD policies, procedures, and standards related to telecommunications and IP‑based communications systems.

Desired Qualifications

• Experience supporting DoD, federal government, or mission‑critical telecommunications environments.
• Experience supporting Command and Control (C2) communications systems.
• Experience with global IP and ISDN teleconferencing networks.
• Experience with Cisco Unified Communications technologies and enterprise collaboration platforms.
• Knowledge of network resiliency, redundancy, continuity of operations, and UPS‑supported telecommunications infrastructure.
• Relevant Cisco, networking, telecommunications, or cybersecurity certifications.

What You Can Expect

A culture of integrity.

At CACI, we place character and innovation at the center of everything we do. As a valued team member, you’ll be part of a high‑performing group dedicated to our customer’s missions and driven by a higher purpose – to ensure the safety of our nation.

An environment of trust.

CACI values the unique contributions that every employee brings to our company and our customers – every day. You’ll have the autonomy to take the time you need through a unique flexible time off benefit and have access to robust learning resources to make your ambitions a reality.

A focus on continuous growth.

Together, we will advance our nation's most critical missions, build on our lengthy track record of business success, and find opportunities to break new ground — in your career and in our legacy.

Pay Range

There are a host of factors that can influence final salary including, but not limited to, geographic location, Federal Government contract labor categories and contract wage rates, relevant prior work experience, specific skills and competencies, education, and certifications. Our employees value the flexibility at CACI that allows them to balance quality work and their personal lives. We offer competitive compensation, benefits and learning and development opportunities. Our broad and competitive mix of benefits options is designed to support and protect employees and their families. At CACI, you will receive comprehensive benefits such as; healthcare, wellness, financial, retirement, family support, continuing education, and time off benefits.

The proposed salary range for this position is:

$103,800 - $218,100

CACI is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, age, national origin, disability, status as a protected veteran, or any other protected characteristic.