Cloudflare
Posted 73 days agoVerified live 15h ago
Network Security Engineer
Brief overview
Remote
UndergradOr in progress
4+ yrsMinimum
238 H-1B approvalsDept. of Labor
68 green cardsCertified filings
Network Security EngineeringDDoS MitigationFirewall Rules ConfigurationSSL/TLSNetwork Protocols - TCP/IPNetwork Protocols - DNSNetwork Protocols - HTTP/SNetwork Protocols - BGPAnycast RoutingiptablesBGP RoutingGRE TunnelsPacket Capture AnalysisCommand Line Tools - curlCommand Line Tools - digCommand Line Tools - tracerouteCommand Line Tools - openssl
About the company
Cloudflarecloudflare.com
Cloudflare is a web performance and security company that provides online services to protect and accelerate websites online.
Visa sponsorship history
4 years sponsoring, last filed FY2026
Data powered by U.S. Department of Labor. This does not guarantee sponsorship for this specific role.238H-1B approved
99%approval rate
42new H-1B hires
68PERM certified
$170,000median wage / yr
H-1B Petition ApprovalsVisas USCIS actually granted: the strongest sign the company sponsors.
202359
202478
202587
202614
LCA Certified ApplicationsAn early filing step, not a visa approval: it signals intent, not confirmed sponsorship.
202314
202425
202525
202618
Green Card (PERM) FilingsCertified green card filings: a long-term commitment to international hires.
20239
202415
202538
20266
Top sponsored roles
Systems EngineerCybersecurity Internal Audit ManagerSoftware EngineerData AnalystNetwork Engineer
Sponsored employees from
IndiaCanadaTaiwanIranBenin
Job description
Summary
Cloudflare is a company on a mission to help build a better Internet. They are seeking an experienced Network Security Engineer to support their largest and most technically sophisticated customers in resolving technical problems, threats, or attacks on their infrastructure.
Responsibilities
- Serve as a trusted technical advisor for our enterprise customers, responding to and resolving inquiries and incidents related to network security and performance, while delivering timely, high-quality and personalized assistance
- Work directly with customers to diagnose, troubleshoot and resolve complex technical issues involving DDoS mitigation, firewall rules, SSL/TLS, network confirmation, 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 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 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
Skills
- You have a 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
- You are competent at writing scripts in Bash, Python, JavaScript or other scripting languages
- You have worked 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
Qualifications
Must Haves
- You have a 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
- You are competent at writing scripts in Bash, Python, JavaScript or other scripting languages
- You have worked 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
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