Senior F5 Network Engineer *

Senior F5 Network EngineerCGI is seeking a Senior F5 Network Engineer with deep, hands-on expertise in F5 BIG IP LTM and GTM/DNS to support a large scale, highly available financial services environment. F5 is the primary technology for this position, and candidates must have significant recent experience managing, troubleshooting, upgrading, and optimizing complex enterprise F5 environments. This role is located at a client site in either Lafayette, LA, Knoxville, TN, Columbia, SC or Birmingham, AL. A hybrid working model is acceptable. CGI's benefits are offered to eligible professionals on their first day of employment to include: Competitive compensation. Comprehensive insurance options. Matching contributions through the 401(k) plan and the share purchase plan. Paid time off for vacation, holidays, and sick time. Paid parental leave. Learning opportunities and tuition assistance. Wellness and Well-being programs.Your future duties and responsibilities:This is a senior level engineering role focused on the F5 load balancing and application delivery infrastructure, including physical and virtual F5 platforms. The engineer will support infrastructure modernization, F5 platform replacements, configuration migrations, upgrades, patching, security hardening, capacity planning, and performance optimization. The engineer will also serve as a senior escalation point for complex F5 and network related production issues, performing root cause analysis and independently driving issues through resolution. The position requires someone who can evaluate existing F5 configurations, identify opportunities for improvement, recommend technical changes, and successfully implement those changes in production. In addition to F5, the environment includes Palo Alto firewalls, Cisco networking, Terraform automation, and AWS cloud networking technologies. Experience with these technologies is valuable, but the strongest candidates will distinguish themselves through their depth of F5 LTM and GTM/DNS experience. The role will also contribute to Infrastructure as Code and automation initiatives, particularly using Terraform to manage and deploy F5 configurations. As a senior member of the team, the engineer will provide technical guidance to other engineers, document changes and implementation procedures, and contribute to the continued modernization of the network security perimeter. Some complex production changes may be scheduled during after-hours maintenance windows.Required qualifications to be successful in this role:• 5+ years of F5 BIG IP experience. Deep, recent hands-on experience with F5 LTM (Local Traffic Manager) in large enterprise production environments. Deep, recent hands-on experience with F5 GTM/DNS (Global Traffic Manager). Strong understanding of load balancing, application traffic management, DNS, high availability, failover, and traffic distribution. Hands on experience configuring and troubleshooting F5 virtual servers, pools, nodes, health monitors, profiles, persistence, SSL/TLS, and related BIG IP functionality. Experience supporting complex physical and virtual F5 BIG IP deployments. Experience performing F5 migrations, hardware/platform replacements, configuration migrations, upgrades, patching, and lifecycle management. Strong F5 troubleshooting skills with demonstrated experience resolving complex production issues independently. Experience with F5 performance, capacity, resiliency, security hardening, and infrastructure optimization. Ability to analyze existing F5 implementations and recommend practical improvements. Experience working with F5 in highly available, business critical enterprise environments. Experience with Palo Alto firewalls, particularly policy management and complex troubleshooting. Intermediate Cisco routing and switching knowledge. Strong TCP/IP, routing, switching, DNS, SSL/TLS, firewall, and network troubleshooting fundamentals. Experience serving as a senior/L3 escalation point for complex infrastructure issues. Strong root cause analysis and problem-solving capabilities. Ability to lead technical implementations and provide guidance to other engineers. Strong technical documentation and communication skills.What you can expect from us:Together, as owners, let's turn meaningful insights into action. Life at CGI is rooted in ownership, teamwork, respect and belonging. Here, you'll reach your full potential because… You are invited to be an owner from day 1 as we work together to bring our Dream to life. That's why we call ourselves CGI Partners rather than employees. We benefit from our collective success and actively shape our company's strategy and direction. Your work creates value. You'll develop innovative solutions and build relationships with teammates and clients while accessing global capabilities to scale your ideas, embrace new opportunities, and benefit from expansive industry and technology expertise. You'll shape your career by joining a company built to grow and last. You'll be supported by leaders who care about your health and well-being and provide you with opportunities to deepen your skills and broaden your horizons. Come join our team—one of the largest IT and business consulting services firms in the world.