Defense Network Engineer - Onsite with Secret Clearance

RTX; El Segundo (CA); On-site; USD 120,000 - 160,000; Full time

Job summary

RTX in El Segundo, CA is seeking a Principal Network Specialist to maintain and enhance government-classified voice and data networks onsite. The role requires active US Secret/transferable clearance, 5+ years of relevant experience, and strong Cisco routing/switching capabilities.

The successful candidate will document network details, advance security posture, and coordinate with vendors and program engineers to ensure uptime and compliance across defense-oriented programs.

Qualifications

• University degree or equivalent experience; 5+ years or an advanced degree with 3+ years.
• Experience configuring and troubleshooting Cisco routers, switches, firewalls, and IDS, including software upgrades.
• Active, in-scope and transferable U.S. government issued security clearance; U.S. citizenship required.

Responsibilities

• Focuses on inter-team communication and documentation of network details to support project growth.
• Experience with Cisco ISE, 802.1X, SolarWinds, and client/server environments for government networks.
• Maintains smooth operation of voice and data networks; plans and performs installation and reconfiguration of hardware/software for data/voice networks.
• Develops expertise in network hardware/software interconnection and interfacing (switches, routers, firewalls, authentication servers, encryptors).
• Maintains network management software platforms.
• Proposes solutions to management to optimize cost savings with redundancy and uptime.
• Creates or updates network documentation and diagrams.
• Provides network analysis and planning for in-house systems.
• Coordinates third-party maintenance and vendor support as needed.
• Designs networks with hardware/software selections and hierarchical architecture.
• Works with program engineers to resolve networking problems in tactical environments.
• Mentors and trains the technical team; supports knowledge sharing.
• Willing to work outside normal hours as needed.

Tools

Cisco routers

Switches

Firewalls

Intrusion detection systems

Job description

RTX in El Segundo, CA is seeking a Principal Network Specialist to maintain and enhance government-classified voice and data networks onsite. The role requires active US Secret/transferable clearance, 5+ years of relevant experience, and strong Cisco routing/switching capabilities.

The successful candidate will document network details, advance security posture, and coordinate with vendors and program engineers to ensure uptime and compliance across defense-oriented programs.