Senior Network Engineer

Leidos is seeking a Communications Network Engineer Senior to design, implement, and secure complex enterprise and mission networks for government and commercial customers. This role architects WAN/LAN solutions, configures routers, switches, and firewalls, and implements VPNs and encryption to meet stringent security and availability requirements. You will monitor performance, troubleshoot advanced issues, and lead upgrades and migrations. Working in a highly collaborative, mission-driven environment, you will mentor junior engineers and help deliver resilient, compliant, and scalable network solutions with real-world impact.

Responsibilities

• Design and engineer secure communications network architectures for mission-critical environments
• Configure, integrate, and optimize routers, switches, firewalls, and WAN/LAN solutions
• Implement and support network security controls, VPNs, and encryption for classified and unclassified systems
• Monitor network performance, troubleshoot complex issues, and drive root-cause analysis
• Develop and maintain network documentation, diagrams, and configuration standards
• Collaborate with cyber, systems, and program teams to align solutions with mission and compliance requirements
• Support network upgrades, migrations, and technology refreshes with minimal downtime
• Provide senior-level technical guidance, mentoring, and escalation support to junior engineers

Required Skills

• Network architecture and design
• Routing and switching (e.g., BGP, OSPF, EIGRP, VLANs)
• Enterprise firewalls and security appliances
• VPN technologies and encryption
• WAN/LAN implementation and optimization
• Network performance monitoring and troubleshooting
• TCP/IP and network protocols analysis
• High-availability and redundancy design
• Network documentation and diagramming
• Government or regulated environment compliance