Systems Engineer

Job Description

We are seeking an experienced Cisco Voice Engineer to join our team! This role focuses on designing, deploying, securing, and sustaining enterprise-level Cisco Unified Communications solutions across a complex, highly secure environment. You should have a bachelor's or master's degree and a minimum of six (6) years of progressive experience in Voice/UC engineering.

Required Skills

• Design, test, and deploy new Cisco Voice infrastructure (CUCM, Unity Connection, IM&P, UCCX)
• Implement next-generation voice system technologies and support first-article engineering
• Participate in security accreditation activities for all voice systems
• Manage PKI/certificate requirements across Cisco UC components
• Perform system upgrades, patching, and lifecycle maintenance for hardware and software
• Provide engineering support for new site standups, including dial plan design and endpoint provisioning
• Design, test, and deploy call center technologies (UCCX/UCCE), including user training and transition planning
• Execute tasks related to call routing, SIP trunking, SRST, CUBE, and gateway configuration
• Collaborate with customers and internal teams to gather and refine system requirements
• Ensure compliance with enterprise standards, policies, and security procedures
• Work within a large-scale enterprise IT environment with responsibilities specific to Cisco Voice and Unified Communications
• Partner with network engineering and telecom teams on integration activities involving telephony, call center systems, and network infrastructure
• Support secure communications devices and infrastructure, including VoIP phones, STEs, Viper phones, encryption devices, POTs/ISDN/leased lines, conference bridges, and call management servers
• Expert-level proficiency in:
  • Working within a large-scale enterprise IT environment with responsibilities specific to Cisco Voice and Unified Communications
  • SIP signaling and call flows
  • Secure Real-Time Transport Protocol (SRTP)
  • SIP, MGCP, H.323
  • TCP/IP networking
  • MPLS transport environments
  • DNS and DHCP
  • RTP media handling
• Demonstrated experience leading enterprise-scale voice deployments and modernization efforts
• Proven ability to troubleshoot complex, multi-layered call routing and signaling issues
• Strong communication skills for stakeholder engagement, documentation, and technical leadership

Desired Skills

• Expertise in SIP signaling, call flows, and multi-vendor integration
• Hands-on experience with H.323 in mixed-protocol environments
• Cisco Certified Collaboration Professional (CCCP) or equivalent Cisco Collaboration certifications
• CCNP Collaboration
• CCIE Collaboration (highly desirable)
• Avaya Communications Certification or experience supporting Avaya platforms in hybrid Cisco/Avaya environments
• Experience with secure communications devices (VoIP endpoints, STEs, Viper phones, encryption devices)
• Familiarity with government security accreditation processes and PKI/certificate management
• Experience designing or supporting call center technologies (Cisco UCCX/UCCE or Avaya equivalent)
• Prior experience in a DoD, IC, or other high-security environment