Network Security Engineer
Core
Support enterprise customers in resolving technical problems, threats, and attacks on their infrastructure via OSI Layers 3, 4, and 7 using Cloudflare's network security products.
Role type
Senior Network Security Engineer (Technical Support)
Builds
Customer trust and service reliability for large-scale internet properties
Domain
Internet Security / Network Operations
Deliverable
client delivery
Required skills
OSI model fundamentals, TCP/UDP protocols, network connectivity troubleshooting, BGP routing, GRE tunnels, packet capture analysis, command line tools (curl, dig, traceroute, openssl, git), DNS/SSL/TLS/HTTP troubleshooting, web server configuration (Apache, Nginx, Caddy, IIS), scripting (Bash, Python, JavaScript)
Preferred skills
PostgreSQL/MySQL/MS SQL, Cloudflare platform familiarity, Spanish language
Responsibilities
Communicate with customers via chat, email, and phone; compare traffic signatures to distinguish good vs malicious traffic; advise on DDoS mitigation using Magic Transit, Network Firewall, WAF, and rate limiting; collaborate with Engineering and Operations to apply mitigations; work with Product teams to improve tools
