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# Systems Engineer

- **Company:** NeoMax, LLC
- **Location:** Dulles, VA, United States
- **Contract:** Permanent contract
- **Skills:** Systems Engineering, VoIP, Cisco Unified Communications Manager, Dynamic Host Configuration Protocol, H.323 Protocol, Integrated Services Digital Networks, Multi-protocol Systems, Session Initiation Protocols, Media Gateway Control Protocol (MGCP), Network Architecture, Public Key Infrastructure, Software Requirements Analysis, Transmission Control Protocol (TCP), SSL Certificate Management, Real-Time Transport Protocol, Cisco Unified Contact Center Enterprise (UCCE), Survivable Remote Site Telephony, Cisco
- **Published:** May 19, 2026
- **Apply:** https://www.indeed.com/viewjob?jk=5d6cf39d68f1ee0e

## About the Role

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 eleven (11) years of relevant Voice/UC engineering experience., Strong technical expertise 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

Experience supporting secure, enterprise-scale voice environments
Ability to troubleshoot complex call routing, signaling, and interoperability issues
Strong communication skills for documentation, requirements analysis, and customer interaction
,
Desired Skills

Advanced expertise in SIP signaling, call flows, and multi-vendor integration
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)

## Description

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


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