Senior Cisco UC/VoIP Engineer

PEAKE; Falls Church (VA); On-site; USD 140,000 - 180,000; Full time

Benefits offered by this job

Medical, Dental & Vision

401(k) with employer match

PTO 15 days; Unlimited PTO after 5 yrs

Holidays 11 + carryover

Company-Paid Life/Disability Insurance

Job summary

PEAKE is seeking a Senior Cisco Unified Communications Engineer to design, implement, secure, and support enterprise voice and collaboration systems for DoD and federal customers. You will manage CUCM, Unity Connection, Expressway, and Jabber across NIPRNet, SIPRNet, and VoSIP networks.

The role requires 7+ years of UC engineering experience, CCNA, and strong troubleshooting skills. On-site work in Falls Church, VA, with a competitive salary and comprehensive benefits package will be provided.

Qualifications

• 7+ years engineering and administering Cisco UC/VoIP in DoD/enterprise.
• CCNA certification is required; CCNP preferred.
• Experience with CUCM, Unity Connection, Expressway, SIP, QoS, and VG gateways.
• Knowledge of DISA STIGs, IA controls, and DoD security practices.
• Ability to troubleshoot complex UC/VoIP across distributed networks.

Responsibilities

• Engineer, administer, and support CUCM/UC platforms across NIPR, SIPR, VoSIP.
• Monitor UC availability with RTMT and SolarWinds.
• Perform CUCM upgrades, migrations, and patching (UCS, VG gateways, VMware ESXi).
• Maintain compliance with DoD cybersecurity and IA controls.
• Provision/configure IP phones using BAT, templates, and workflows.
• Configure SIP trunks, dial plans, QoS, and call routing.
• Write system design guides, installation manuals, SOPs.
• Collaborate with network, cybersecurity, and infrastructure teams.
• Conduct site surveys and propose design changes for performance.
• Provide Tier II/III support and end-user training.

Skills

UC/VoIP troubleshooting

Technical writing

Security/compliance knowledge

Education

Bachelor’s degree in Information Technology, Computer Engineering, or related field

CCNA

CCNP (preferred)

Tools

CUCM

Cisco Unity Connection

Cisco Expressway

Cisco Jabber

Cisco UCS servers

VMware ESXi

RTMT

SolarWinds

SIP QoS

Job description

Who We Are

PEAKE delivers the people, expertise, and technology that mission-critical agencies depend on to operate and achieve their missions. The company provides specialized teams, technology integration, and ongoing operational support across the full lifecycle, from planning and implementation through daily operations. We help teams stay connected and operational wherever the mission takes them, from field deployments to enterprise environments.

Position Summary

PEAKE is hiring a Senior Cisco Unified Communications (UC) Engineer to design, implement, secure, and support enterprise voice and collaboration systems for DoD and federal customers. You’ll engineer and administer large-scale Cisco Collaboration environments, including CUCM, Unity Connection, Expressway, and Jabber, across NIPRNet, SIPRNet, and VoSIP networks. Your work keeps voice and video services secure, reliable, and mission-ready across geographically dispersed sites.

Key Responsibilities

• Engineer, administer, and support Cisco Unified Communications Manager (CUCM), Cisco Unity Connection (CUC), Cisco Expressway (C/E), Cisco Jabber, and related Cisco Collaboration platforms across NIPR, SIPR, and Voice over Secure IP (VoSIP) networks.
• Monitor and optimize UC system availability and performance with Cisco Real-Time Monitoring Tool (RTMT) and SolarWinds.
• Perform CUCM upgrades, migrations, and patching, including Cisco UCS servers, VG450 voice gateways, and VMware ESXi virtual environments.
• Apply DISA STIGs, remediate ACAS/Nessus scan findings, and maintain compliance with DoD cybersecurity and Information Assurance (IA) controls.
• Provision and configure IP phones and telephony devices using the Bulk Administration Tool (BAT), custom templates, and automated workflows.
• Configure and troubleshoot SIP trunks, dial plans, call routing, and Quality of Service (QoS) for voice and video.
• Write and maintain system design guides, installation manuals, as-built documentation, service policies, and standard operating procedures (SOPs).
• Work with network, cybersecurity, and infrastructure teams to resolve complex VoIP and UC issues.
• Conduct site surveys and recommend design changes that improve performance, scalability, and security.
• Provide Tier II/III technical support, end-user training, and user documentation.
• Help plan and deploy new UC services and shape the collaboration technology roadmap.

Required Qualifications

• 7+ years of experience engineering and administering Cisco Unified Communications/VoIP platforms in enterprise or DoD environments.
• Cisco Certified Network Associate (CCNA).
• Hands-on experience with CUCM, Unity Connection, Expressway, SIP, QoS, and Cisco VG series voice gateways.
• Experience upgrading and migrating Cisco UC systems, including Cisco UCS servers and VMware ESXi.
• Working knowledge of DISA STIG compliance, IA controls, and security practices on DoD networks.
• Proven ability to troubleshoot complex UC, VoIP, and collaboration issues across geographically distributed networks.
• Experience with RTMT, SolarWinds, or similar network monitoring tools.
• Strong technical writing and documentation skills.

Clearance

• Active DoD Security Clearance required upon start.

Preferred Qualifications

• Bachelor’s degree in Information Technology, Computer Engineering, or a related field.
• Cisco Certified Network Professional (CCNP), CCNP Collaboration preferred.
• Experience supporting VoSIP or SIPRNet voice deployments.
• Experience with Tandberg/Cisco TelePresence video conferencing and enterprise video deployments.

Work Location

• In-office and on-site required in Falls Church, VA.

Compensation

• Salary based on senior-level experience and relevant qualifications: $140,000 - $180,000

Benefits

PEAKE offers a comprehensive benefits package designed to support your overall well-being:

• Medical, Dental & Vision plans through CareFirst
• 401(k) Retirement Plan with employer match and 3% safe harbor contribution
• Paid Time Off: 15 days annually; Unlimited PTO after 5 years
• 11 Paid Holidays plus 5-day carryover allowance
• Company-Paid Life, Short- & Long-Term Disability Insurance

Equal Opportunity Employer

PEAKE hires based solely on business needs and the qualifications of each individual. We do not tolerate discrimination based on race, color, religion, sex, national origin, age, disability, or any other protected status. We are committed to compliance with all applicable federal, state, and local employment laws.