Sr. Network Unified Communication Engineer

Peraton

5d•$86,000 - $138,000•Onsite

About The Position

Peraton is hiring an experienced Network Unified Collaboration Engineer to work on-site in Wiesbaden, Germany, supporting the U.S. Army Europe Regional Cyber Center (RCC-E). The engineer designs, deploys, maintains, optimizes, and secures the RCC-E’s Cisco Unified Communications infrastructure and provides operational support for voice and video services across the area of responsibility. The role includes sustaining the Cisco Collaboration Suite, managing voice gateways and collaboration endpoints, integrating identity and access controls, and supporting video services across platforms such as Microsoft Teams Rooms and Cisco Webex. The engineer also maintains security compliance, provides Tier 3 escalation support, coordinates with network automation and security teams, and manages the day-to-day lifecycle of UC services. The position requires relevant education and experience, specified industry certifications, U.S. citizenship, and an active DoD Secret security clearance. The stated typical salary range is $86,000–$138,000.

Requirements

Bachelor’s degree in Computer Science, Cybersecurity, or a related field and 8+ years of relevant experience; or an associate degree and 10+ years; or a high school diploma and 12+ years.
At least 5 years administering the Cisco Collaboration stack, including CUCM, UCCX, Unity Connection, and Cisco Emergency Responder (CER).
Proven experience maintaining Cisco Expressways, voice gateways (ISR/VG), analog gateways, and Cisco Unified Border Elements (CUBEs).
Proficiency in Cisco ISE and 802.1X, including managing endpoint identity policies, troubleshooting authentication and authorization failures for UC devices, and ensuring correct hardware profiling.
Strong campus routing and switching skills with Cisco Catalyst/Nexus, including troubleshooting Layer 2 issues (VLANs, Spanning Tree, PoE) and Layer 3 issues (OSPF/BGP, QoS/DSCP) affecting voice and video traffic.
Experience supporting multi-vendor video solutions, including Microsoft Teams Rooms, Webex, and Polycom, and interoperating legacy VTC hardware with cloud collaboration platforms.
Experience maintaining network topology diagrams, port/cable maps, and system SOPs, and managing configuration backups, version control, and formal change-management records.
Deep understanding of SIP message flows, call negotiation, early media, and troubleshooting methodologies.
Practical experience with major SBC platforms, including Cisco CUBE and Ribbon, and audio codecs.
Understanding of network security principles, including ACLs, NAT, and IPS/IDS.
Understanding of Cisco ISE policies, 802.1X, RADIUS, TACACS+, TrustSec, and Software-Defined Access.
Familiarity with command-line interfaces such as TMSH, networking concepts and protocols, and security principles.
Demonstrated analytical, troubleshooting, and communication capabilities, and ability to thrive in fast-paced, mission-critical settings.
U.S. citizenship required.
Active DoD Secret security clearance required.
Required certifications: one of SecurityX/CASP+, CCNP Security, CCSP, GCIA, GCED, or GCIH, and one of CCNP Collaboration, CCNP Routing and Switching, CCNP Security, or CCIE.

Responsibilities

Design, deploy, maintain, optimize, and secure the Cisco Unified Communications infrastructure for the RCC-E.
Perform daily health checks, proactive monitoring, and Tier 3 troubleshooting for CUCM, Unity, UCCX, CER, Expressways, and CUBEs; support 99.9% availability for mission-critical voice services.
Configure and maintain SIP trunks, H.323 gateways, SRST, CUBE, and Microsoft Teams trunk configurations for integration with Army Azure cloud or tactical voice networks.
Configure and maintain SIP trunks, H.323 gateways, SRST, CUBE, and Google Cloud Platform configurations for integration with DISA or tactical voice networks.
Manage Cisco IOS voice gateways and collaboration endpoints, including configuration updates, firmware patches, and dial-plan optimization.
Lead UC-related identity tasks within Cisco ISE, maintain 802.1X port security for collaboration endpoints, and troubleshoot authentication failures.
Support multi-platform video environments, including Microsoft Teams Rooms and Cisco Webex; manage SBC connectivity for Direct Routing and interoperability between VTC hardware and software codecs.
Support VTC scheduling, endpoints, and bridging through tactical and RHN networks for secure and nonsecure VTC calls.
Implement and maintain DISA STIG compliance across UC and video assets; work with the Security team to remediate vulnerabilities and meet Army Top-Level Architecture standards.
Integrate collaboration services with Active Directory, PKI/certificate authorities, cloud platforms, and DNS.
Provide Tier 3 escalation support and mentor team members on UC technologies.
Coordinate between the UC team and Network Automation Operations pillars; provide technical input to Change Management boards and assist with SOP documentation.
Manage day-to-day UC infrastructure operations, including user provisioning, certificate renewals, and SIP trunk and VTC bridge capacity monitoring.
Maintain architecture diagrams, runbooks, SOPs, and other documentation, and participate in formal change-control processes.
Maintain network topology diagrams, port/cable maps, configuration backups, version control, and formal change-management records.