Key Responsibilities
Designs, implements, administers, and supports enterprise load-balancing and application-delivery infrastructure, with strong preference for Citrix NetScaler and Kemp LoadMaster; experience with comparable platforms such as F5 BIG-IP is acceptable.
Configures and troubleshoots virtual servers, services, service groups, pools, health monitors, persistence methods, content switching, traffic policies, redirects, and SSL/TLS offload.
Administers high-availability load-balancer pairs and clusters, including synchronization, failover testing, software upgrades, backup, recovery, and lifecycle management.
Troubleshoots application-delivery issues across network and application layers using packet captures, platform logs, health checks, and traffic-flow analysis.
Partners with application, security, cloud, and infrastructure teams to onboard applications, define load-balancing requirements, validate dependencies, and support production changes.
Maintains certificates, cipher settings, protocol policies, and secure application-delivery configurations in coordination with security standards and certificate-management processes.
Develops and maintains standards, diagrams, runbooks, inventories, and implementation documentation for load-balancing services.
Implements monitoring, alerting, capacity analysis, and performance reporting for load balancers and related application-delivery services.
Automates repeatable network and load-balancer administration using PowerShell, Python, Ansible, REST APIs, or other approved tools.
Supports enterprise routing, switching, WAN, firewall/DMZ, Wi-Fi, VPN, and hybrid-cloud connectivity as secondary areas of responsibility.
Supports hybrid cloud network connectivity to Microsoft Azure and/or AWS, including related routing, security, and application-delivery integration.
Qualifications
Skills & Competencies
Excellent problem-solving skills and the ability to troubleshoot complex network and application-delivery issues.
Advanced knowledge of load-balancing concepts, including Layer 4 and Layer 7 traffic management, health monitoring, persistence, content switching, SSL/TLS offload, and high availability.
Strong hands-on knowledge of Citrix NetScaler and Kemp LoadMaster is strongly preferred; comparable experience with F5 BIG-IP or another enterprise load-balancing platform is acceptable.
Ability to analyze end-to-end application traffic flows across DNS, load balancers, firewalls, servers, proxies, and cloud services.
Very strong knowledge of TCP/IP, HTTP/HTTPS, DNS, routing, NAT, SSL/TLS, and network traffic analysis using tools such as Wireshark.
Knowledge of certificate formats, certificate chains, cipher suites, TLS versions, and certificate renewal and replacement processes.
Experience with load-balancer monitoring, logging, performance analysis, capacity planning, configuration backup, and disaster recovery.
Working knowledge of enterprise routing, switching, firewall, VPN, and Wi-Fi technologies; Arista, Cisco, Palo Alto/Panorama, and Aruba experience is a plus.
Working knowledge of dynamic routing protocols and data-center networking concepts, including OSPF, BGP, VXLAN, BGP-EVPN, and DCI.
Working knowledge of cloud networking concepts in Microsoft Azure and/or AWS, including hybrid connectivity, security policies, and cloud-native monitoring.
Understanding of Zero Trust Network Architecture principles as applied to application delivery and hybrid cloud environments.
Proficiency with scripting and automation using PowerShell, Python, Bash, Ansible, REST APIs, Terraform, or ARM templates.
Must have good written and verbal communication skills and the ability to create clear technical documentation.
Occasional travel required.
Education and Prior Experience
7+ years of experience supporting enterprise network infrastructure in a large, multi-site environment.
5+ years of hands-on experience administering enterprise load-balancing or application-delivery platforms.
Hands-on experience with Citrix NetScaler and/or Kemp LoadMaster is strongly preferred; substantial experience with F5 BIG-IP or another enterprise load balancer is acceptable.
Experience implementing and supporting high availability, health monitoring, persistence, content switching, SSL/TLS offload, and application traffic policies.
Experience troubleshooting complex application-delivery issues using logs, packet captures, platform diagnostics, and end-to-end traffic analysis.
3+ years of experience with enterprise routing, switching, WAN, firewall, VPN, or Wi-Fi technologies.
2+ years of experience with cloud networking in Azure and/or AWS environments, including hybrid connectivity solutions.
Relevant load-balancing, cloud, security, or networking certifications are a plus.
Physical Requirements
While performing the duties of this job, the employee is occasionally required to move from workstation or desk, throughout the work area to work independently or with a team, to meet with colleagues or supervisor and retrieve work assignments.
This position may also be sedentary and require the employee to sit for extended periods of time.
Requires manual dexterity to dial a telephone, enter data into a computer, handle objects and operate tools.
GT is an EEO employer with an inclusive workplace committed to merit-based consideration and review without regard to an individual’s race, sex, or other protected characteristics and to the principles of non-discrimination on any protected basis.
