Install, set up, troubleshoot, and maintain ground-support hardware as directed by the senior network engineer. Support planning, design, and development of LAN, WAN, VPN, and network-security environments including firewalls, IDS, and NAC. Work with radio-frequency systems, link budgets, and signal-quality measurements. Maintain documentation, inventory data, equipment and tool lists, and records of department equipment conditions. Work closely with data center, operations, and technical teams. Create and maintain documentation for logical and physical network design, VLANs, firewalls, and routing protocols. Help create and optimize internal network and infrastructure processes. Analyze, diagnose, test, and troubleshoot network issues involving speed and bandwidth. Assist in installing, configuring, and maintaining routers, switches, firewalls, and other network hardware. Monitor network performance, conduct routine maintenance checks, and submit progress reports