Network Engineer III – Core IP & Optical Transport

About the role

Our customer, the Defense Information Systems Agency (DISA), is seeking a senior Network Engineer to support core IP and optical transport services in Bahrain. The role is part of Leidos’ Global Solutions Management‑Operations II contract and focuses on sustaining, maintaining and improving the Defense Information System Network (DISN).

Key responsibilities

• Design, engineer and implement network hardware (shelves, cards) on operational nodes.
• Develop and maintain network management system designs, methods of procedure and architecture upgrades approved by the Engineering Review Board.
• Deploy network changes, monitor traffic impact and recommend best practices.
• Provide ad‑hoc engineering support, data gathering, modeling and flow‑chart updates.
• Perform fault isolation, analysis and troubleshooting across SONET/ODXC, DWDM, TDM, routers, switches, firewalls and cryptographic systems.
• Escalate and manage engineering incidents, update ServiceNow tickets and produce situational awareness reports.
• Coordinate authorized service interruptions, maintenance windows and vendor technical assistance.

Required profile

• U.S. citizenship with an active Secret clearance.
• DoD 8750 certification at IAT Level II and Security+ CE (or equivalent).
• Experience with core IP and optical transport networks in a defense or government environment.
• Ability to work Sunday‑to‑Thursday schedule in Bahrain.

Required skills

• DoD 8750 IAT Level II certification
• Security+ CE
• SONET/Optical Fiber Transport (ODXC/MSPP)
• DWDM and TDM technologies
• Routers, switches, firewalls and cryptographic systems
• ServiceNow ticketing
• Network design and management system development