Network Security Support Engineer

Responsibilities

The Network Security Support Engineer will resolve complex technical issues, threats, and attacks for enterprise customers at OSI layers 3, 4, and 7. They will collaborate with engineering and operations teams to mitigate attacks and improve product tools.

Requirements

Candidates must have at least 3 years of experience in a technical support role and a fundamental understanding of the OSI model and internet protocols. Proficiency in network troubleshooting, scripting languages, and web server configuration is required.

Skills

• Network Security
• DDoS Mitigation
• WAF
• TCP/IP
• UDP
• BGP Routing
• GRE Tunnels
• Packet Capture Analysis
• Bash
• Python
• JavaScript
• DNS
• SSL/TLS
• HTTP
• Nginx
• Apache

Benefits

• Medical Insurance
• Dental Insurance
• Vision Insurance
• Flexible Spending Accounts
• Commuter Spending Accounts
• Fertility and Family Forming Benefits
• Mental Health Support
• Employee Assistance Program
• Global Travel Medical Insurance
• Short and Long Term Disability Insurance
• Life and Accident Insurance
• 401(k) Retirement Savings Plan
• Employee Stock Participation Plan
• Flexible Paid Time Off
• Parental Leave
• Pregnancy Health Leave
• Medical Leave
• Bereavement Leave

About this role

About Us
At Cloudflare, we are on a mission to help build a better Internet. Today the company runs one of the world’s largest networks that powers millions of websites and other Internet properties for customers ranging from individual bloggers to SMBs to Fortune 500 companies. Cloudflare protects and accelerates any Internet application online without adding hardware, installing software, or changing a line of code. Internet properties powered by Cloudflare all have web traffic routed through its intelligent global network, which gets smarter with every request. As a result, they see significant improvement in performance and a decrease in spam and other attacks. Cloudflare was named to Entrepreneur Magazine’s Top Company Cultures list and ranked among the World’s Most Innovative Companies by Fast Company.
At Cloudflare, we’re not looking for people who wait for a polished roadmap; we’re looking for the builders who see the cracks in the Internet that everyone else has simply learned to live with. We value candidates who have the instinct to spot a "normalized" problem and the AI-native curiosity to create a solution using the latest tools. Our culture is built on iteration, leveraging AI to ship faster today to make it better tomorrow, while ensuring that every improvement, no matter how small, is shared across the team to lift everyone up. If you’re the type of person who values curiosity over bureaucracy, and that AI is a partner in solving tough problems to keep the Internet moving forward, you’ll fit right in.
Available Locations: Austin, TX
About the Department
The Customer Support Team solves complicated problems and answers technical inquiries via phone, email, chat, and social media. Whether it is a Wordpress blogger using our services for free or a global Enterprise business with petabytes of web traffic, our team is always eager to assist. We are the eyes and ears of Cloudflare, acting as the real-time voice of the customer to help communicate their needs and real-world use cases back to the rest of the company - to help build a better service and future product development.
About the Role
Do you love solving complex technical problems and interacting with people? Are you passionate about helping customers and are a standout colleague? Cloudflare is seeking an experienced Network Security Engineer to join our team and support our largest and most technically sophisticated customers in resolving technical problems, threats or attacks on their infrastructure at OSI Layers 3, 4, and 7. This will span the range of Cloudflare products from Magic Transit Infrastructure Protection, Argo Smart Routing, DDoS mitigation and Network Firewall, to using the Web Application firewall (WAF), Spectrum and Rate Limiting to help customers.
Responsibilities
Communicate with customers via chat, email, and phone
Compare traffic signatures and attributes including IP addresses, cookie variations, HTTP headers, and JavaScript footprints to determine what is good traffic and what is malicious
DDoS mitigation for OSI layers 3,4, & 7: advise customers on how to filter 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 Operations teams to mitigate attacks, suggest steps to mitigate, and apply the appropriate mitigation when applicable
Work with Engineering and Product teams to improve products and tools
Desirable Skills, Knowledge, and Experience
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 working as part of a team in a customer-facing role
Bonus Points
You are familiar with Cloudflare and are actively using our platform
You have worked with PostgreSQL, MySQL, MS SQL, and other database servers
You are fluent and can troubleshoot in other languages beyond English and Spanish
Availability and Schedule Requirements
Flexibility to work varying work schedules including: 8:30 AM - 5:30 PM Pacific Time Zone, Tuesday through Saturday, Sunday through Thursday, holidays, weekends, more than 5 days in a row, or additional hours on occasion.
Compensation
Compensation may be adjusted depending on work location.
Equity
This role is eligible to participate in Cloudflare’s equity plan.
Benefits
Cloudflare offers a complete package of benefits and programs to support you and your family. Our benefits programs can help you pay health care expenses, support caregiving, build capital for the future and make life a little easier and fun! The below is a description of our benefits for employees in the United States, and benefits may vary for employees based outside the U.S.
Health & Welfare Benefits
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
Financial Benefits
Short and Long Term Disability Insurance
Life & Accident Insurance
401(k) Retirement Savings Plan
Employee Stock Participation Plan
Time Off
Flexible paid time off covering vacation an...

About Cloudflare

Computer and Network Security · 1,001-5,000 employees · headquartered in San Francisco, California · founded 2009