Network Security Engineer

Jobtailor; Austin (TX); On-site; USD 70,000 - 90,000; Full time

Job summary

Jobtailor is seeking a technically skilled Support Engineer in Austin to engage customers across chat, email, and phone. You will analyze traffic signatures, advise on mitigating malicious traffic, and work with Engineering and Operations to implement fixes.

A strong foundation in networking and web server concepts is essential. Ideal candidates have 3+ years in Technical Support, fluency in English, and the ability to learn new technologies quickly.

Qualifications

• Fluent English required.
• 3+ years in a Technical Support role solving technical issues.
• Able to learn new technologies with minimal guidance.
• Fundamental understanding of how the Internet works (OSI Model).
• Strong knowledge of internet protocols (TCP/UDP).
• Foundation in computer networking and experience with iptables and looking glass.
• Experience troubleshooting network connectivity, BGP, and GRE tunnels.
• Experience with packet capture and CLI tools (curl, dig, traceroute, openssl, git).
• Experience troubleshooting DNS, SSL/TLS, HTTP.
• Experience in a web hosting environment with servers like Apache, Nginx, Caddy, IIS.
• Scripting experience (Bash, Python, JavaScript or similar).
• Team collaboration in a customer-facing role.

Responsibilities

• Communicate with customers via chat, email, and phone.
• Compare traffic signatures to identify good vs malicious traffic.
• Provide DDoS mitigation guidance using Cloudflare tools and rate limiting.
• Collaborate with Engineering and Operations to mitigate attacks.
• Collaborate with Engineering and Product to improve products and tools.

Skills

Fluent English

Technical support

OSI model understanding

TCP/UDP protocols

Networking fundamentals

iptables

DNS/SSL/TLS/HTTP troubleshooting

Web server knowledge (Apache/Nginx/Ca​

Tools

curl

dig

traceroute

openssl

git

iptables

Apache

Nginx

Caddy

IIS

Job description

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

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.