Response Engineer - CMDC

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. Job Locations: Hybrid - Austin To the attention of candidates: This role requires full time work over the Weekends. Candidates should be comfortable working with a Tuesday - Saturday or Sunday - Thursday 5-day working week schedule. About the Department Cloudforce One’s INTERDICT organization identifies, analyzes, disrupts, and responds to cyber threats targeting Cloudflare and its customers, from cybercriminal activity to nation-state-sponsored advanced persistent threats. Operating 24×7×365, INTERDICT combines PhishGuard’s managed email threat detection and response, Cloudflare Managed Defense Center’s application and network security monitoring and mitigation support, and Detection Engineering’s ML model development and detection optimization. The team leverages telemetry from Cloudflare’s global network, internal expertise, external partnerships, and expanding threat intelligence sources to conduct threat hunting, develop operational tradecraft, accelerate remediation, and deliver actionable intelligence across email, application, and network threat surfaces. Description The Response Engineer provide premium-level support for Cloudflare’s security products and features. Our largest and most technically sophisticated customers will contact Cloudflare Managed Defense Center for assistance and intelligence in dealing with threats or attacks on their infrastructure at OSI Layers 3, 4, and 7. This will span the range of Cloudflare security products from Magic Transit Infrastructure Protection, DDoS mitigation and Network Firewall, to using the Web Application firewall (WAF), Spectrum, Bot Management and Rate Limiting to help customers. Response Engineers analyze threats, make detailed and informed suggestions for mitigation and may need to implement mitigation strategies directly on behalf of the customer. The team also provides attack reporting beyond Cloudflare’s self-service reports. Responsibilities Monitor and investigate the alerts to identify attacks 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 the products and tools Extensive communications with customers via chat, email, and phone Review the latest alerts to determine relevancy and urgency. Create new tracking tickets for alerts that signal an incident and require review or escalation Configure / Manage security monitoring rules and contribute to tool improvements 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 Participation in a weekend and holiday rotation required with main working hours 9 to 5 Pacific time Key skill sets Strong understanding of the OSI model, TCP, UDP, BGP, QUIC Advanced understanding of iptables Analysis of traffic for attack anomaly detection an