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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Cisco Unified Communications (CUCM) Engineer - **Company:** All Native Group - **Location:** Washington, DC, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Automatic Call Distributor, VoIP, Cisco Unified Communications Manager, Cisco IOS, Cyber Security, Trunking, Issue Tracking Systems, Office Suite, Public Switched Telephone Networks, Software Vulnerability Management, Network Routers, 3-tier Architectures, Cisco - **Published:** June 16, 2026 - **Apply:** https://www.clearancejobs.com/jobs/8977301/cisco-unified-communications-cucm-engineer ## About the Role * Cisco certifications preferred: CCNA-VOICE, CCNP Collaboration or CCIE Collaboration * 7+ years of expertise and hands-on experience with CUCM solutions in a large enterprise environment. * Possess strong knowledge and experience with Cisco voice gateways (VG410, 420, 450) * 7 years' experience with CUCM. Versions 14 or 15 are preferable. * Knowledge and familiarity with CUCM best practices and security (TLS, SRTP, certificates) Senior level knowledge with Call Manager, Unity Connection, SIP trunking and PSTN connectivity, Call routing * Familiarity with 3rd party integration (Microsoft Teams) * Knowledgeable with Cisco IOS routers, switching, SBC (Cisco Unified Border Element CUBE) Possess strong written and verbal communications * Strong knowledge of telecommunications, i.e. wiring, cross connects, demarcation points, circuits etc. * Solid team player and ability to mentor, * Must be able to remain in a stationary position 75% of the time. * Occasionally moves about inside the office to access file cabinets, office machinery, etc. * Constantly operates a computer and other office productivity machinery, such as a calculator, copy machine, and computer printer. * Expresses or exchanges ideas by means of the spoken word. Those activities in which they must convey detailed or important spoken instructions to other workers accurately, loudly or quickly. * Frequently moves standard office equipment up to 25 pounds. * Must be able to work indoor conditions 90% of the time., 7+ years of expertise and hands-on experience with CUCM solutions in a large enterprise environment. Education Cisco certifications preferred: CCNA-VOICE, CCNP Collaboration or CCIE Collaboration Security Clearance Must possess or be able to obtain/maintain a TS/SCI security clearance ## Description All Native Group is seeking a highly qualified Senior level Cisco Unified Communications (CUCM) Engineer to design, implement and provide maintenance and support of enterprise-level voice solutions including Call Manager, Unity Connection, Emergency Responder and VoIP endpoints. The Engineer shall possess a deep understanding and bring expertise of CUCM cluster design and operations. Engineer will function in a Tier 3 role within a team environment and provide Tier 2 and Tier 3 support. Engineer shall possess the ability to lead voice solution implementations from planning to execution. This role is critical in support of the enterprise CUCM infrastructure., * Configure and support CUCM clusters, voice gateways and endpoints in a multi-site environment. * Configure and support SIP trunks to ensure optimal call routing amongst sites and PSTN * Provide Tier 3/advanced level investigation and troubleshooting of complex voice issues across the enterprise voice environments. * Monitor and maintains CUCM cluster health, performance and availability across the enterprise, document voice issues and make recommendations for any adverse findings that will impact cluster health * Provide support to internal support groups such as PMO, NOC and Installations * Collaborate with Cybersecurity/Information Assurance groups to ensure the security and integrity of CUCM, and ensure the system aligns with standards and compliance requirements. * Lead enterprise voice related projects, migrations, tech refreshes, deployments and implementations. * Support planned maintenance activities such as system patching and vulnerability management and configuration changes. * Be able to collaborate and perform in a team oriented and as an individual contributor. * Be a self-starter and able to work independently * Provide cross training across the enterprise voice teams, Tier 2 and Tier 3. * Develop and maintain system designs, diagrams and standard operating procedures (SOPs). * Ensures enterprise CUCM is highly available, failover and contingencies are in place. * Provides research, investigation and problem resolution of voice incidents and outages and status updates utilizing appropriate Incident Handling, Management and Ticketing system. * Participates in industry partners technology research, evaluations and solutions ## Related Videos - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [Trunk-Based Development at Scale: Real-World Insights from a High-Traffic Luxury E-Commerce Platform](https://www.wearedevelopers.com/videos/1435-trunk-based-development-at-scale-real-world-insights-from-a-high-traffic-luxury-e-commerce-platform) - [Getting under the skin: The Social Engineering techniques](https://www.wearedevelopers.com/videos/38-getting-under-the-skin-the-social-engineering-techniques) - [Computer Vision from the Edge to the Cloud done easy](https://www.wearedevelopers.com/videos/263-computer-vision-from-the-edge-to-the-cloud-done-easy) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [100 times more frequent deployments: How did we create a high performance team?](https://www.wearedevelopers.com/videos/1069-100-times-more-frequent-deployments-how-did-we-create-a-high-performance-team) ## Related Articles - [Best US AI Conferences for CTOs in 2026: Build vs. Buy, Vendor Evaluation, and Peer Intelligence](https://www.wearedevelopers.com/magazine/736-best-us-ai-conferences-for-ctos-in-2026-build-vs-buy-vendor-evaluation-and-peer-intelligence) - [How to Write a CV and Interview if You Don't Fully Qualify For The Job](https://www.wearedevelopers.com/magazine/183-how-to-write-a-cv-and-interview-if-you-don-t-fully-qualify-for-the-job) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [Top Must-Visit Developer Conferences in the US in 2026](https://www.wearedevelopers.com/magazine/679-top-must-visit-developer-conferences-in-the-us-in-2026) - [Why Attend a Developer Event in 2026?](https://www.wearedevelopers.com/magazine/688-why-attend-a-developer-event-in-2026) - [5 Reasons Why Attending Conferences in 2026 Matters More Than You Think](https://www.wearedevelopers.com/magazine/692-5-reasons-why-attending-conferences-in-2026-matters-more-than-you-think)