Network Security Support Engineer

Cloudflare

. Communicate with customers via chat, email, and phone .

Posted 9/29/2026full-timeAustin • Texas • United StatesMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in technical support for network security products, with a strong understanding of internet protocols, troubleshooting methodologies, and customer communication. Proficient in analyzing traffic signatures and mitigating infrastructure threats using various tools and techniques.

Highest-signal resume keywords

Technical Support ExperiencePacket Capture AnalysisNetwork TroubleshootingScripting in Bash, Python, JavaScriptFluent English Communication

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Internet ProtocolsComputer Networking FundamentalsTraffic Signature AnalysisBGP RoutingGRE TunnelsCommand Line ToolsWeb Server ConfigurationPacket InspectionRate LimitingOSI Model Understanding

Soft Skills

Self-Driven LearningCustomer-Facing CommunicationFlexibility in Work Schedule

Tools & Technologies

Magic TransitNetwork FirewallWAFCurlDigTracerouteOpenSSLGitApacheNginx

Industry Keywords

Malicious Traffic FilteringIP Reputation ListsBlocklistingAllowlistingTechnical Problem Solving

Tech Stack

Tools & technologies

ApacheDNSJavaScriptNGINXPython

About the role

Key responsibilities & impact

Communicate with customers via chat, email, and phone
Compare traffic signatures and attributes, including IP addresses, cookie variations, HTTP headers, and JavaScript footprints, to distinguish good traffic from malicious traffic
Advise customers on filtering malicious traffic across OSI layers 3, 4, and 7 using Magic Transit, Network Firewall, WAF, IP reputation lists, packet inspection, blocklisting, allowlisting, and rate limiting
Work with Engineering and Operations teams to mitigate attacks, recommend mitigation steps, and apply appropriate mitigations
Work with Engineering and Product teams to improve products and tools
Support large and technically sophisticated customers with infrastructure threats, attacks, and technical problems across Cloudflare network security products

Requirements

What you’ll need

Fluent English speaker is a requirement
Minimum 3 years working within a Technical Support team solving various technical issues
Self-driven and capable of learning new technologies / systems / features with little guidance
Fundamental understanding how the Internet works (OSI Model)
Advanced understanding of internet protocols like TCP and UDP
Computer Networking fundamentals, experience with iptables and looking glass
Experience troubleshooting network connectivity issues, BGP routing, and GRE tunnels
Packet capture analysis
Experience in command line and tools, including curl, dig, traceroute, openssl, git
Experience troubleshooting DNS, SSL / TLS, HTTP
Experience in a web development and / or hosting environment such as installing and configuring web servers like Apache, Nginx, Caddy and IIS
Experience writing scripts in Bash, Python, JavaScript or other scripting language
Experience in a customer-facing team role
Flexibility to work varying schedules, including Pacific Time, weekends, holidays, more than 5 days in a row, or additional hours
May require authorization to receive technology controlled under U.S. export laws without sponsorship for an export license

Benefits

Comp & perks

Equity plan participation
Medical/Rx Insurance
Dental Insurance
Vision Insurance
Flexible Spending Accounts
Commuter Spending Accounts
Fertility & Family Forming Benefits
On-demand mental health support and Employee Assistance Program
Global Travel Medical Insurance
Short and Long Term Disability Insurance
Life & Accident Insurance
401(k) Retirement Savings Plan
Employee Stock Participation Plan
Flexible paid time off covering vacation and sick leave
Leave programs, including parental, pregnancy health, medical, and bereavement leave