Serve as the technical lead during pre-sales engagements, aligning network architectures with client goals across data center, campus, and WAN environments. Design and present solutions using Cisco (Catalyst, Nexus, ISR/ASR) and Juniper (MX, EX, SRX) platforms to meet customer requirements and business objectives. Lead whiteboarding sessions, technical workshops, and customer discovery meetings to define use cases, success criteria, and architectural recommendations.