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General Dynamics Information Technology

Builds and runs technology for government agencies

Cisco Collaboration Engineer

Network Engineering & AdministrationConfirmed live in the last 24 hours
Full-timeTampa, FL, USA

About the Job

Requirements

  • A Cisco Certified Network Professional certification is required, preferably with a Collaboration focus, or equivalent demonstrated collaboration expertise.
  • At least five years of hands-on experience supporting enterprise Cisco voice, video, unified communications, and collaboration technologies.
  • At least five years of experience with Microsoft Windows Server or Windows-based infrastructure supporting enterprise applications.
  • Strong experience with Cisco Unified Communications Manager.
  • Experience supporting Cisco Expressway-C and Expressway-E.
  • Experience supporting Cisco Jabber.
  • Experience with Cisco Webex.
  • Experience supporting Session Border Controllers and SIP trunking.
  • Experience supporting enterprise voice and video gateways.
  • Experience with Cisco next-generation firewall technologies.
  • Experience supporting or integrating V2CDS and/or XD Vision gateway technologies.
  • Strong understanding of SIP, RTP/SRTP, TCP/IP, TLS, DNS, NAT, QoS, and certificate-based communications.
  • Experience analyzing packet captures and troubleshooting complex end-to-end communications.
  • Experience supporting high-availability enterprise production environments.
  • Strong technical documentation and communication skills.
  • Applicable DoW 8140 or DoW 8570 certification.
  • In-depth knowledge of TCP/IP, LAN/WAN technologies, network protocols, and network hardware.
  • Strong analytical skills focused on troubleshooting and diagnosing network issues.
  • Ability to communicate technical issues clearly and professionally with non-technical staff.
  • Ability to respond to escalated user inquiries and network-connectivity issues, perform basic diagnostics, and escalate more complex issues as needed.
  • Ability to work weekends and evening hours as needed.
  • U.S. citizenship is required.
  • A Top Secret/SCI clearance must currently be possessed or be obtainable.

Responsibilities

  • Design, configure, administer, maintain, and troubleshoot Cisco Unified Communications and collaboration environments.
  • Support Cisco Unified Communications Manager clusters, endpoints, trunks, dial plans, route patterns, translation patterns, device pools, regions, locations, and media resources.
  • Configure and troubleshoot SIP, RTP/SRTP, SCCP, H.323, and related voice and video protocols.
  • Support Cisco Jabber voice, video, presence, messaging, and directory integrations.
  • Administer and troubleshoot Cisco Webex and associated enterprise collaboration integrations.
  • Support legacy or mission-required Cisco MeetingPlace services and their integration with the enterprise collaboration environment.
  • Perform software upgrades, patching, certificate maintenance, configuration changes, and lifecycle management of collaboration infrastructure.
  • Support voice and video endpoint registration, authentication, call routing, and media establishment.
  • Analyze call failures, poor call quality, one-way audio, latency, jitter, packet loss, registration failures, and signaling problems.
  • Configure, maintain, and troubleshoot enterprise Session Border Controllers and associated SIP services.
  • Support SIP trunking between internal collaboration systems, external service providers, partner organizations, and other enterprise environments.
  • Configure and troubleshoot SIP normalization, dial-peer and routing policies, codec negotiation, media flows, NAT traversal, and encryption.
  • Diagnose SIP signaling using packet captures, SIP traces, call-detail records, and platform-specific diagnostic tools.
  • Coordinate troubleshooting with telecommunications carriers, vendors, cybersecurity teams, and external organizations.
  • Configure, administer, maintain, and troubleshoot Cisco Expressway-C and Expressway-E platforms.
  • Support Mobile and Remote Access, business-to-business communications, traversal zones, SIP services, and secure remote collaboration.
  • Configure and troubleshoot certificates, DNS, firewall traversal, NAT, TLS, and authentication dependencies.
  • Troubleshoot Jabber and collaboration endpoint registration through Expressway infrastructure.
  • Maintain secure communications between internal collaboration environments and external users or organizations.
  • Provide administration and troubleshooting support for Microsoft Windows Server environments supporting collaboration services.
  • Support Windows Server services including DNS, Active Directory integration, certificate services, service accounts, authentication, and application dependencies.
  • Perform server patching, vulnerability remediation, security hardening, and configuration management.
  • Troubleshoot operating-system, application, network, authentication, and certificate-related issues affecting collaboration services.
  • Coordinate Windows Server changes with system administrators, cybersecurity personnel, and application owners.
  • Configure and troubleshoot Cisco next-generation firewall policies supporting voice, video, collaboration, and remote-access communications.
  • Analyze firewall rules, NAT, ACLs, routing, inspection policies, and application/security policies affecting collaboration services.
  • Troubleshoot signaling and media flows through security boundaries.
  • Coordinate firewall changes with cybersecurity and network security teams.
  • Support secure TLS/SRTP communications and certificate-based authentication.
  • Assist with vulnerability remediation, security compliance, software upgrades, and security-hardening activities affecting collaboration infrastructure.
  • Configure, maintain, integrate, and troubleshoot V2CDS and XD Vision gateway technologies supporting enterprise or mission collaboration requirements.
  • Support secure voice and video communications across interconnected security or network boundaries.
  • Diagnose connectivity, signaling, media, routing, policy, certificate, and interoperability problems associated with gateway services.
  • Coordinate gateway configuration and troubleshooting with cybersecurity, cross-domain, network, voice/video, and external support organizations.
  • Maintain system documentation, configuration baselines, interface requirements, and operational procedures for gateway services.
  • Troubleshoot network connectivity affecting voice, video, and collaboration services.
  • Analyze TCP/IP, UDP, SIP, RTP/SRTP, DNS, DHCP, NAT, QoS, VLAN, routing, switching, and firewall behavior.
  • Work closely with network engineering teams to troubleshoot end-to-end collaboration service performance.
  • Use packet captures and network monitoring tools to isolate signaling, media, application, server, and transport-layer problems.
  • Support QoS requirements for enterprise voice and video traffic.
  • Provide Tier 2/Tier 3 operational support for enterprise collaboration services.
  • Monitor availability, capacity, performance, and health of voice and video systems.
  • Respond to service incidents, outages, degradations, and cybersecurity events.
  • Perform root-cause analysis for recurring technical issues.
  • Develop corrective actions to improve service reliability and availability.
  • Participate in configuration and change management processes.
  • Develop implementation, test, rollback, and validation procedures for production changes.
  • Maintain accurate system diagrams, configurations, inventories, standard operating procedures, troubleshooting guides, and knowledge-base documentation.
  • Support scheduled maintenance activities and authorized service interruptions.
  • Participate in technology refresh, modernization, migration, and lifecycle-management projects.
  • Coordinate with vendors and Cisco TAC on complex technical issues.
  • Provide technical guidance and mentoring to junior engineers and operations personnel.
  • Maintain accurate network diagrams, IP addressing information, equipment inventories, port assignments, circuit information, configuration standards, troubleshooting procedures, standard operating procedures, and knowledge-base articles.
  • Document recurring problems and develop troubleshooting procedures that enable Tier 1 personnel to resolve common issues without unnecessary escalation.
  • Maintain accurate ticket and incident documentation, including symptoms, troubleshooting performed, corrective actions, root cause, and resolution.
  • Support Tier 3 engineers and project teams with unified communications upgrades, migrations, deployments, technology refreshes, and modernization initiatives.
  • Assist with equipment staging, configuration, testing, installation, cutover, validation, and operational turnover.
  • Participate in site surveys and assess network infrastructure, rack space, power, cabling, connectivity, capacity, and technical dependencies.
  • Participate in technical exchange meetings, engineering reviews, change boards, project meetings, and operational readiness reviews.
  • Work closely with peers and other departments to ensure seamless network operations and assist with ongoing projects and tasks.

Desired Qualifications

  • Experience with Cisco routing and switching technologies.
  • Experience with Cisco Catalyst and/or Nexus.
  • Experience with Cisco Firepower/Secure Firewall.
  • Experience with enterprise PKI and certificate management.
  • Experience with Active Directory, DNS, and authentication services.
  • Experience with network and application performance-monitoring platforms.
  • Experience with deployment and management of Cisco Jabber services.
  • Experience supporting cross-domain or multi-security-domain voice and video environments.
  • Experience with Zero Trust architectures and identity-based access controls.
  • Experience supporting highly available, mission-critical, or 24×7 enterprise environments.
  • Experience working with cybersecurity teams on vulnerability remediation, security hardening, and compliance requirements.
  • Cisco Certified Network Professional Collaboration certification.
  • Cisco Certified Network Professional Enterprise certification.
  • Experience with USCENTCOM and familiarity with its mission.
  • Knowledge of USCENTCOM’s IT environment.

About the Company

General Dynamics Information Technology

Builds and runs technology for government agencies

GDIT builds and runs technology systems for U.S. government agencies, including defense, intelligence and civilian organizations. Its work spans cloud infrastructure, cybersecurity and software development, with tools tailored to sensitive missions and large agency operations. The company combines its own reusable technology solutions with commercial products, then earns revenue through contracts to design, integrate, modernize and operate customer systems, including support for both classified and unclassified networks. It also supplies technical expertise and daily operational support, and is a business unit of General Dynamics headquartered in Falls Church, Virginia.

Company size
10,001+
Company stage
Not listed
Total funding
Not listed
Headquarters
Falls Church, VA
Founded
1999

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