Expert Network Engineer (VoIP)

Markon•Herndon, VA

22h

About The Position

Markon is seeking an experienced Expert Network Engineer with deep expertise in Voice over IP (VoIP) technologies to support an IC Customer. This role requires a strong background in network engineering, voice and video systems, and secure communications within complex enterprise environments. The ideal candidate will bring advanced technical knowledge, strong troubleshooting capabilities, and the ability to communicate effectively with both technical teams and senior government stakeholders.

Requirements

Active TS/SCI w/ Full Scope Polygraph
Extensive experience in network engineering and VoIP systems design
Advanced knowledge of TCP/IP networking and QoS principles
Strong experience designing and implementing LAN/WAN architectures
Advanced experience engineering (not just implementing) voice and video technologies
Hands-on experience with VoIP platforms such as Cisco, Asterisk, 3CX, or similar solutions
Experience configuring and troubleshooting network infrastructure components
Strong analytical and problem-solving skills
Excellent written and verbal communication skills

Nice To Haves

Experience supporting U.S. Government or secure enterprise environments
Experience with cloud-based voice integration
Familiarity with secure communications architectures and encryption standards
Relevant industry certifications (e.g. CCNP, CCIE, or Voice/Collaboration certifications)

Responsibilities

Design, implement, and maintain enterprise voice and video communication systems
Engineer and support VoIP environments using protocols such as SIP, RTP, and H.323
Design and optimize Local Area Networks (LAN) and Wide Area Networks (WAN) to support voice and video traffic
Apply Quality of Service (QoS) principles to ensure high-performance voice communications
Configure and troubleshoot routers, switches, firewalls, and VPN concentrators
Support secure voice architectures, including Session Border Controllers (SBCs), TLS encryption, and secure call routing
Integrate voice solutions with cloud platforms and hybrid environments
Perform advanced troubleshooting and traffic analysis using tools such as Wireshark
Collaborate within multidisciplinary teams to support mission requirements
Develop and deliver technical documentation, reports, and briefings
Present technical designs, concepts, and results to non-technical stakeholders and senior government personnel
Apply structured engineering design processes to develop innovative, mission-aligned solutions