Network Security Engineer

Cloudflare • Austin, TX

18h • Onsite

About The Position

Cloudflare is seeking an experienced Network Security Engineer to join their team and support their 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.

Requirements

• 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

Nice To Haves

• 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

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

Benefits

• We’re not just a highly ambitious, large-scale technology company. We’re a highly ambitious, large-scale technology company with a soul. Fundamental to our mission to help build a better Internet is protecting the free and open Internet.
• Project Galileo: Since 2014, we've equipped more than 2,400 journalism and civil society organizations in 111 countries with powerful tools to defend themselves against attacks that would otherwise censor their work, technology already used by Cloudflare’s enterprise customers--at no cost.
• Athenian Project: In 2017, we created the Athenian Project to ensure that state and local governments have the highest level of protection and reliability for free, so that their constituents have access to election information and voter registration. Since the project, we've provided services to more than 425 local government election websites in 33 states.
• 1.1.1.1: We released 1.1.1.1 to help fix the foundation of the Internet by building a faster, more secure and privacy-centric public DNS resolver. This is available publicly for everyone to use - it is the first consumer-focused service Cloudflare has ever released. Here’s the deal - we don’t store client IP addresses never, ever. We will continue to abide by our privacy commitment and ensure that no user data is sold to advertisers or used to target consumers.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Education Level: No Education Listed