Network Security Engineer

What You'll Do

• Serve as a trusted technical advisor for enterprise customers, responding to and resolving inquiries and incidents related to network security and performance.
• Work directly with customers to diagnose, troubleshoot and resolve complex technical issues involving DDoS mitigation, firewall rules, SSL/TLS, network configuration, and other security configurations.
• Create and maintain knowledge base articles, technical guides, and troubleshooting documentation for internal and customer use.
• Compare traffic signatures and attributes including IP addresses, cookie variations, HTTP headers, and JavaScript footprints to determine good vs. malicious traffic.
• Provide DDoS mitigation for OSI layers 3, 4, and 7: advise customers on filtering malicious traffic using Cloudflare tools like Magic Transit, Network Firewall, WAF, IP reputation lists, packet inspection, blocklisting, allowlisting, and rate limiting.
• Work with Engineering and Product teams to improve products and tools.
• Utilize generative AI and automation tools to streamline log analysis, accelerate root-cause analysis during security incidents, and optimize customer response times.

What We're Looking For

• Minimum of 4 years experience working as a Network Security Engineer / Technical Support Engineer / Sr. Support Engineer supporting networking or web security products.
• Exceptional troubleshooting and problem-solving skills, with the ability to simplify complex concepts for customers.
• Strong customer service orientation and communication skills.
• Ability to work independently and collaboratively in a fast-paced, dynamic environment.
• Strong understanding of network protocols, including TCP/IP, DNS, HTTP/S, and BGP, with a particular focus on anycast routing concepts and implementation, as well as tools such as iptables and looking glass.
• Proven experience troubleshooting network connectivity issues, BGP routing, and GRE tunnels, and performing packet capture analysis.
• Confident with command line and tools, including curl, dig, traceroute, openssl, git.
• Experience in a web development and / or hosting environment such as installing and configuring web servers like Apache, Nginx, Caddy and IIS.
• Competent at writing scripts in Bash, Python, JavaScript or other scripting languages.
• Experience working with PostgreSQL, MySQL, MS SQL, and other database servers.
• Bachelor’s degree in Computer Science, Cybersecurity, or a related field (or equivalent experience).
• Relevant certifications such as CISSP, GCIA, GCIH, GCFA, GCFE or equivalent.