Network Engineering is the field of designing, building, securing, and maintaining the computer networks that let devices and people talk to each other - from a small office WiFi to global networks like the internet.
What a Network Engineer does:
1. Design & Planning:
• Design LAN, WAN, WLAN, VPN, and Data Center networks
• Plan IP addressing, subnetting, routing
2. Implementation:
• Configure routers, switches, firewalls, access points
• Deploy protocols like TCP/IP, OSPF, BGP, VLANs, MPLS
3. Security & Maintenance:
• Monitor performance, troubleshoot outages
• Implement firewalls, IDS/IPS, VPN security, access control
• Patching, backups, and uptime management
4. Documentation & Support:
• Network diagrams, SOPs
• Work with sysadmins, cloud engineers, and cybersecurity teams