Senior Enterprise & Cloud Network Architect

Leidos is seeking a Network Architect to design and optimize secure, mission-critical network infrastructures for government and commercial clients. In this role, you will lead architecture for complex routing, switching, wireless, and security solutions, ensuring scalability, resilience, and compliance. You'll collaborate with cyber, cloud, and systems engineering teams to modernize legacy environments, integrate advanced technologies, and solve high-impact national security and health challenges in a mission-driven, highly collaborative culture.

Responsibilities

• Design and document secure, scalable network architectures for enterprise and mission-critical environments
• Lead implementation and integration of routing, switching, wireless, and security solutions
• Evaluate and select network technologies, tools, and vendors to meet client and mission requirements
• Collaborate with cybersecurity, systems engineering, and cloud teams on end-to-end solutions
• Develop capacity plans, redundancy strategies, and disaster recovery architectures
• Perform network assessments, troubleshoot complex issues, and drive root-cause analysis
• Create and maintain architecture standards, diagrams, and technical documentation
• Support proposals, estimates, and technical presentations for government and commercial clients

Required Skills

• Network architecture design
• Enterprise routing and switching (BGP, OSPF, EIGRP)
• Network security (firewalls, VPNs, IDS/IPS)
• Cisco networking technologies
• SD-WAN and software-defined networking
• Load balancing and high availability design
• Cloud networking (AWS/Azure/GCP)
• Network performance monitoring and troubleshooting
• Network automation and scripting
• Documentation and network diagramming