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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Network Security Engineer - **Company:** Amiseq Inc. - **Location:** Dallas, TX, United States - **Experience:** Experienced - **Contract:** Temporary contract - **Skills:** Application Programming Interfaces (APIs), Amazon Web Services, Application Firewall, Microsoft Azure, Bash Shell, Cloud Computing Security, Cluster Analysis, Cyber Security, Computer Networks, System Configuration, DDoS Mitigation, Network Address Translation, Domain Name System (DNS), Hypertext Transfer Protocols (HTTP), Python (Programming Language), Network Security, Routing, Open Web Application Security, Performance Tuning, Windows PowerShell, Ansible, Akamai, Reverse Proxy, Server Virtualization, Security Information and Event Management, SQL Injection, TCP/IP, Wireshark, Software Vulnerability Management, Transport Layer Security, Google Cloud, Enterprise Software Applications, Load Balancing, System Availability, Software Security, QRadar, Information Technology, Cisco Firewalls, Cloudflare, Microsoft Sentinel, Fortinet, Restful APIs, Terraform, Splunk, Big Ip - **Published:** September 4, 2026 - **Apply:** https://www.dice.com/job-detail/6b30cfcf-ff3d-4555-b4ca-4a2f4a9c0df8 ## About the Role * Hands-on experience with Web Application Firewall (WAF) * Strong experience with F5 BIG-IP WAF/ASM/Advanced WAF OR Imperva WAF * Experience creating, configuring and tuning WAF security policies * Strong understanding of OWASP Top 10 and common web/application attacks * Hands-on experience with F5 BIG-IP LTM is highly preferred * Strong understanding of HTTP/HTTPS, TCP/IP, DNS and SSL/TLS * Experience with load balancing, reverse proxy and application traffic flows * Experience troubleshooting production WAF/network security issues * Experience analyzing WAF logs, security events and false positives * Ability to work with application, network, infrastructure and security teams, * F5 BIG-IP ASM / Advanced WAF * OR Imperva WAF * WAF policy creation and tuning * WAF signatures and exceptions * OWASP Top 10 * Application security * API security Networking * TCP/IP * HTTP/HTTPS * DNS * SSL/TLS * Routing and switching fundamentals * Load balancing * Reverse proxy * NAT/SNAT F5 Technologies Preferred * F5 BIG-IP LTM * Virtual Servers * Pools & Nodes * iRules * Health Monitors * SSL Profiles * HTTP Profiles * Persistence * High Availability / Device Service Clustering * Configuration synchronization Troubleshooting & Security * Wireshark * tcpdump * WAF/security event analysis * Vulnerability remediation * Incident and problem management * Root Cause Analysis Preferred Skills * Experience with Palo Alto, Fortinet or Cisco firewalls * Experience with DDoS protection * Experience with CDN technologies such as Cloudflare or Akamai * Experience with AWS/Azure/Google Cloud Platform networking or cloud security * Experience with SIEM tools such as Splunk, QRadar or Microsoft Sentinel * Python, Bash or PowerShell scripting * F5 REST API / automation * Ansible or Terraform * Experience in large-scale enterprise environments Education & Certifications * Bachelor's degree in Computer Science, Information Technology, Cybersecurity or related field, or equivalent experience. * F5 Certified BIG-IP Administrator / F5 Certified Technology Specialist is a plus. * CCNA/CCNP Security, PCNSE, CISSP or other relevant security certifications are a plus., * 5+ years of experience in Network Security, Application Security or Network Engineering. * 3+ years of hands-on experience working with WAF technologies. * Strong hands-on experience with F5 WAF/ASM or Imperva WAF is mandatory. * Experience supporting enterprise production environments. * Strong troubleshooting and communication skills., The ideal candidate is a hands-on Network Security Engineer who has worked extensively with F5 WAF/ASM or Imperva WAF, understands application traffic and network security, and can independently troubleshoot WAF, SSL/TLS, HTTP/HTTPS and load-balancing issues in a large enterprise environment. ## Description The ideal candidate will have strong expertise in F5 BIG-IP WAF/ASM or Imperva WAF, along with a solid understanding of network security, application security, load balancing, HTTP/HTTPS, SSL/TLS, DNS, TCP/IP and enterprise network architecture. This role will be responsible for implementing, managing, troubleshooting, tuning and maintaining WAF and network security technologies supporting business-critical applications., * Design, implement, configure and maintain enterprise WAF solutions. * Administer and support F5 BIG-IP WAF/ASM/Advanced WAF or Imperva WAF environments. * Develop and maintain WAF security policies for enterprise applications. * Perform WAF policy tuning, signature management, exception handling and false-positive analysis. * Monitor WAF events and investigate suspicious or malicious application traffic. * Protect applications against OWASP Top 10, API attacks, SQL injection, cross-site scripting and other application-layer threats. * Support application onboarding and migration onto WAF platforms. * Configure and troubleshoot F5 BIG-IP components including Virtual Servers, Pools, Nodes, Profiles, Health Monitors and SNAT. * Troubleshoot HTTP/HTTPS, SSL/TLS, DNS and application connectivity issues. * Analyze network traffic using packet captures and tools such as Wireshark/tcpdump. * Participate in incident, problem and change management activities. * Perform WAF/F5 software upgrades, patches, configuration changes and health checks. * Work with application teams to identify and resolve WAF-related application issues. * Collaborate with SOC, Network Engineering, Infrastructure and Application teams during security incidents. * Work with vendors/OEM support for complex technical issues and escalations. * Maintain technical documentation, SOPs, configuration standards and operational procedures. * Participate in production support and on-call activities as required. ## Related Videos - [Our journey with Spring Boot in a microservice architecture](https://www.wearedevelopers.com/videos/511-our-journey-with-spring-boot-in-a-microservice-architecture) - [You can’t hack what you can’t see](https://www.wearedevelopers.com/videos/41-you-can-t-hack-what-you-can-t-see) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) - [Get security done: streamlining application security with Aikido](https://www.wearedevelopers.com/videos/1638-get-security-done-streamlining-application-security-with-aikido) ## Related Articles - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Understanding and Mitigating Common Web Vulnerabilities](https://www.wearedevelopers.com/magazine/565-understanding-and-mitigating-common-web-vulnerabilities) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [How Much FAANG Companies Actually Pay Software Engineers in 2025](https://www.wearedevelopers.com/magazine/230-how-much-faang-companies-actually-pay-software-engineers-in-2025)