Top Secret/SCI Network Engineer — VoIP & WAN Specialist

Probity; Herndon (VA); On-site; USD 120,000 - 180,000; Full time

Job summary

Probity is seeking an experienced Network Engineer with VOIP expertise to support U.S. Government missions in Herndon, VA. The role requires an active Top Secret/SCI clearance with Polygraph and a strong background in TCP/IP, QoS, LAN/WAN, SIP, RTP, H.323, and platforms like Cisco, Asterisk, and 3CX.

The candidate will design, implement, and maintain voice systems, work with a multidisciplinary team, and communicate complex concepts to senior government staff.

Qualifications

• Must have 7-10 years of relevant experience designing communications systems.
• Strong knowledge of virtualization with a focus on Hyper-V.
• Proficiency in scripting languages with a focus on PowerShell.
• Experience with McAfee product suite.
• Demonstrated ability to understand and communicate technical ideas to stakeholders.
• Knowledge of Cisco Routing and Switching, and network architecture planning.
• Must understand remote administration and secure VPN.
• Must understand encryption standards in IP networking.
• Must know VPN technologies, OSPF, EIGRP, BGP.
• Voice and video solutions knowledge including SIP and H.323.

Responsibilities

• Design, implement, and maintain voice systems and related networking.
• Configure and troubleshoot LAN switches, routers, firewalls, and VPN concentrators.
• Convey designs and results to non-technical audiences and brief government personnel.
• Author documents (reports, briefings) to support customer missions.
• Apply engineering design processes to solve technical problems and meet client requirements.

Skills

Microsoft Systems

Hyper-V

PowerShell

McAfee

Cisco Routing

Remote Admin

Encryption Standards

VPN

Routing Protocols

VoIP SIP/H.323

Tools

Cisco

Polycom

Avaya

Job description

Probity is seeking an experienced Network Engineer with VOIP expertise to support U.S. Government missions in Herndon, VA. The role requires an active Top Secret/SCI clearance with Polygraph and a strong background in TCP/IP, QoS, LAN/WAN, SIP, RTP, H.323, and platforms like Cisco, Asterisk, and 3CX.

The candidate will design, implement, and maintain voice systems, work with a multidisciplinary team, and communicate complex concepts to senior government staff.