Senior Network & Voice Engineer – TS/SCI

CO1002 CDW Government, LLC; Washington (District of Columbia, VA); On-site; USD 180,000 - 240,000; Full time

Job summary

CDW Government, LLC is seeking a Senior Network / Voice Engineer to support enterprise network and voice infrastructure within a secure federal environment. An active TS/SCI clearance is required, with hands-on experience in VoIP, unified communications, and voice equipment moves, adds, and changes.

You will perform provisioning, troubleshooting, documentation, and coordination with cybersecurity and mission stakeholders to ensure reliable day-to-day operations while following change management

Qualifications

• Active TS/SCI clearance required.
• U.S. citizenship required due to federal security requirements.
• Hands-on experience supporting enterprise network and voice infrastructure in federal, defense, intelligence, or similarly secure environments.
• Experience performing voice moves, adds, changes, and deletions for IP phones, extensions, voicemail, call routing, hunt groups, shared lines, and related telephony services.
• Working knowledge of VoIP technologies, SIP, RTP, QoS, dial plans, gateways, trunks, voicemail systems, and unified communications platforms.
• Strong understanding of core networking concepts, including TCP/IP, subnetting, VLANs, routing, switching, LAN/WAN connectivity, network segmentation, and troubleshooting.
• Experience supporting Cisco or comparable network and voice technologies, such as Cisco Unified Communications Manager, Unity Connection, voice gateways, IP phones, CUBE/SBCs, routers, and switches.
• Ability to troubleshoot voice and network issues using logs, packet captures, monitoring tools, call traces, command-line diagnostics, and vendor support resources.
• Familiarity with secure configuration management, change control, incident management, vulnerability remediation, and documentation requirements in a federal environment.
• Strong customer service and communication skills with the ability to support end users, brief technical issues, and coordinate effectively with engineering teams and government stakeholders.

Responsibilities

• Perform moves, adds, changes, and deletions for voice equipment, user extensions, voicemail accounts, phones, call routing, hunt groups, shared lines, and related telephony services.
• Install, configure, maintain, and troubleshoot IP phones, analog voice devices, voice gateways, call managers, session border controllers, voicemail systems, and unified communications components.
• Support day-to-day voice operations, including provisioning, incident response, ticket resolution, user support, endpoint replacement, and coordination of voice service requests.
• Troubleshoot voice quality and connectivity issues, including one-way audio, dropped calls, registration failures, latency, jitter, packet loss, codec mismatch, dial-plan issues, and PSTN/SIP trunk problems.
• Coordinate with carriers, vendors, government customers, and internal technical teams to support circuit issues, number assignments, porting activity, trunk configuration, and service restoration.
• Create and maintain accurate documentation for voice infrastructure, phone inventories, extension assignments, dial plans, call flows, topology diagrams, standard operating procedures, and change records.
• Plan and execute approved network and voice changes through established change management processes while minimizing risk to mission operations.
• Support cybersecurity and compliance requirements by maintaining secure configurations, assisting with vulnerability remediation, supporting audit requests, and following federal security standards and operational procedures.
• Provide technical guidance to junior technicians or support staff for voice endpoint configuration, troubleshooting steps, and escalation procedures.

Skills

Voice engineering

Network engineering

VoIP platforms

Unified communications

Troubleshooting

Documentation

Stakeholder communication

Security compliance

Education

Bachelor's degree in Computer Science, Information Technology, Telecommunications, Engineering

Tools

Cisco Unified Communications Manager

Cisco Unity Connection

CUBE/SBCs

Wireshark

SolarWinds

Job description

CDW Government, LLC is seeking a Senior Network / Voice Engineer to support enterprise network and voice infrastructure within a secure federal environment. An active TS/SCI clearance is required, with hands-on experience in VoIP, unified communications, and voice equipment moves, adds, and changes.

You will perform provisioning, troubleshooting, documentation, and coordination with cybersecurity and mission stakeholders to ensure reliable day-to-day operations while following change management