We are seeking a skilled and proactive Network Security Engineer with deep expertise in F5 BigIP Load Balancer technologies (LTM, GTM, NLB) to join our Digital Infrastructure team. This role is critical in ensuring high availability, security, and performance of enterprise applications through efficient traffic management and robust security configurations. The ideal candidate will possess strong troubleshooting capabilities, knowledge of network protocols, and experience in hybrid cloud environments including AWS and Azure. Key Responsibilities: Troubleshoot and resolve issues related to F5 Load Balancers and Privileged Remote Access (PRA) across Layers 1 to 7. Design, implement, and maintain security measures on F5 appliances to mitigate potential threats and vulnerabilities. Install, configure, and maintain F5 BigIP (LTM, GTM, NLB) load balancers per network and application requirements. Collaborate with software developers and application teams to optimize load balancing strategies and ensure seamless application delivery. Develop and manage iRules and policies to enforce traffic management and security logic. Provide on-call support and respond to high-priority incidents or outages as part of a 24/7 rotational support model. Ensure compliance with industry best practices and company standards related to network and application security. Maintain documentation of configurations, processes, and procedures for ongoing operations and audits. Requirements 8+ years of hands-on experience with F5 BigIP LTM, GTM, NLB, including configuration, optimization, and troubleshooting. Proficiency in creating and troubleshooting iRules for traffic steering and security enforcement. Strong understanding of network protocols (TCP/IP, HTTP/HTTPS, DNS, SSL/TLS) and application ports. Familiarity with Cisco routing and switching technologies. Experience with cloud-based load balancers (AWS ELB, Azure Load Balancer). Ability to diagnose issues across Layer 1–7 and work with cross-functional teams to resolve them efficiently. Willingness and ability to work in a 24/7 rotational shift schedule, including weekends and holidays.