Demo

Senior Network Architect

Advance Digital Systems
Washington, DC Contractor
POSTED ON 5/1/2026
AVAILABLE BEFORE 5/31/2026

We are seeking an highly experienced Senior Network Architect to lead the design, evolution, and operational excellence of a large-scale enterprise network infrastructure. This role combines deep routing expertise with hands-on engineering to support a highly available, secure, and scalable environment spanning data centers, campus networks, and cloud platforms. The architect will play a critical role in modernizing network architecture, enhancing visibility and security, and ensuring seamless integration of emerging technologies—all while maintaining operational stability in live production environments.

Position Responsibilities

·        Own and evolve the enterprise routing architecture, with deep expertise in BGP and OSPF, including route policy design, traffic engineering, convergence optimization, and failure handling at scale.

·        Design, implement, and operate modern data center fabrics (spine-leaf architectures, VXLAN/EVPN), ensuring scalability, resilience, and operational simplicity.

·        Lead and execute complex network changes, migrations, and upgrades in production environments with minimal to no service disruption.

·        Serve as the highest level of technical escalation, driving complex issues from initial symptoms to root cause across routing, switching, security, and application layers.

·        Perform advanced troubleshooting, including packet-level analysis (Wireshark/PCAP) and system-level debugging in high-pressure production scenarios.

·        Design and enhance network segmentation, access control, and visibility leveraging technologies such as Cisco ISE and Gigamon.

·        Integrate and support secure edge and access solutions, including platforms such as Zscaler and Cisco Firepower Threat Defense (FTD).

·        Evaluate current network designs and proactively recommend improvements to reliability, performance, scalability, and operational efficiency.

·        Collaborate with cross-functional teams including security, cloud, and application teams to ensure cohesive and secure network architecture.

·        Maintain comprehensive documentation of network architecture, standards, and operational procedures.

Position Qualifications

·        Demonstrated CCIE-level expertise in networking concepts and technologies (certification preferred but not required).

·        Deep, hands-on experience with routing protocols, particularly BGP and OSPF, in large-scale production environments.

·        Strong experience designing and operating data center networks using spine-leaf architectures and VXLAN/EVPN overlays.

·        Extensive hands-on experience with Cisco platforms, including Nexus, Catalyst, NX-OS, and IOS-XE.

·        Proven experience with Network Access Control (NAC) solutions such as Cisco ISE or equivalent platforms.

·        Experience with network visibility and monitoring tools such as Gigamon or similar technologies.

·        Solid understanding of secure access solutions and next-generation firewalls (e.g., Zscaler, Cisco FTD).

·        Deep knowledge of TCP/IP protocols and packet-level behavior, with advanced troubleshooting capabilities using tools such as Wireshark.

·        Strong analytical, problem-solving, and decision-making skills, with the ability to operate effectively in high-pressure environments.

·        Excellent communication and collaboration skills, with the ability to bridge architecture and operations teams.

 ___________________________________________________________________

No Phone calls Please

Please apply with your resume in a word file including all your contact details 

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