Sr. Unified Communication Engineer

By Light HQ • Fort Meade, MD

5d

About The Position

By Light Professional IT Services LLC is seeking a Sr. Unified Communication Engineer to lead an engineering team supporting mission-critical Unified Communications (UC) capabilities. The role provides technical direction, coordinates engineering priorities, and drives strategy for contemporary IP video systems and integration with legacy UC services and endpoints. The engineer assesses and enhances system capabilities to support resilient, scalable infrastructure while ensuring compliance with government directives and guidelines.

The position leads efforts to re-baseline and maintain an engineering lab that reflects the customer’s production environment. It supports migration from legacy video infrastructure to modern, cloud-capable UC platforms, platform upgrades, Smart Licensing transitions, hardware refreshes, and Tier III troubleshooting and sustainment. The role also supports system capacity planning, architecture and design, integration and testing, security engineering, logistics, configuration management, lifecycle documentation, and customer discussions to develop effective solutions. The work includes classified networks and UC infrastructure spanning legacy and modern video platforms.

Requirements

• Bachelor's degree in Computer Science or a related field.
• 10+ years of related experience or 14 years of related experience.
• At least 3 years of real-time communications experience (VoIP/Video), with deep expertise in SIP, SDP, RTP, SRTP, TLS, and WebRTC.
• Hands-on experience with Cisco VCS Control and Expressway (C and E series), including SIP/H.323 interworking, traversal zone configuration, and signaling troubleshooting.
• Experience with Poly and Cisco hardware video endpoints.
• Strong understanding of information technology principles, methods, and associated hardware and software.
• Experience integrating and/or managing classified voice and video systems.
• Extensive support knowledge of DNS, certificates/PKI, TLS, signaling and media, Active Directory, PowerShell, APIs/REST, networks/firewalls, and H.323/SIP.
• Proven troubleshooting across signaling and media layers using call traces and packet captures, including Wireshark or tcpdump.
• Superior customer service skills for engaging diverse stakeholder groups and supporting system reliability and user satisfaction.
• Active Secret clearance.

Nice To Haves

• Senior Microsoft Azure certifications or other industry-recognized cloud engineering, architecture, or security certifications.
• UC certifications, including SBC training/certification or similar.
• Experience with Pexip and Azure/O365 integration.
• Experience with Vidyo infrastructure, including Routers, Portals, Gateways, and WebApp components.
• Familiarity with Microsoft Teams interoperability in IL5/IL6 environments.

Responsibilities

• Lead a team of engineers, establish technical direction, coordinate engineering priorities, and ensure successful execution of modernization and sustainment initiatives.
• Lead re-baselining and maintenance of the engineering lab environment so it is current and represents the customer's production environment.
• Support migration from legacy video infrastructure to modern, cloud-capable UC platforms, including platform upgrades, Smart Licensing transitions, and hardware refresh projects.
• Provide engineering and Tier III troubleshooting and sustainment for UC video infrastructure, including Cisco VCS/Expressway, Poly/Cisco endpoints, Pexip Infinity, and Microsoft Teams CVI.
• Develop system capacity expansion plans and conduct quality assurance and performance checks across UC telecommunications design, video networking elements, and end-user peripherals.
• Ensure architecture and designs comply with government directives and guidelines, particularly for classified networks, and provide continuing security engineering support.
• Provide strategic logistics support and recommend configurations that enhance system functionality.
• Implement and validate final hardware and software configurations and maintain current System Engineering and Functional Requirements documentation.
• Provide expert analysis, design, integration, and testing support for Unified Communication solutions.
• Design solutions for IaaS, PaaS, and SaaS deployment models while optimizing cloud-computing characteristics.
• Analyze customer requirements, assess design and technology alternatives, and facilitate stakeholder discussions to propose and implement solutions.

Benefits

• An extensive selection of employee benefits and offerings.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior