Network Infrastructure Specialist

Job Role: Network Support Engineer

Skills: Citrix load balancer, Aruba switches & wireless

Experience: 6 to 8 years

Location: Chennai

Responsibilities

• Configure and manage Citrix ADC (formerly NetScaler) for load balancing, SSL offloading, content switching, and GSLB.
• Implement and manage high-availability (HA) and disaster recovery (DR) configurations.
• Monitor application performance and troubleshoot load balancing and connectivity issues.
• Design and implement secure and scalable load balancing architectures.
• Collaborate with application, network, and security teams to support enterprise services.
• Apply patches, upgrades, and security hardening for Citrix ADC appliances.
• Create and maintain technical documentation, including network diagrams and SOPs.
• Perform health checks, performance tuning, and capacity planning.
• 4–5 years of hands-on experience working with Citrix ADC (NetScaler) in production environments.
• Strong understanding of TCP/IP, HTTP/HTTPS, DNS, and SSL/TLS protocols.
• Experience with load balancing methods (round-robin, least connections, persistence, etc.).
• Knowledge of Citrix Gateway (for ICA Proxy, VPN, etc.) and AAA authentication.
• Strong troubleshooting and analytical skills.
• Knowledge of web application firewalls (WAF) and application security best practices.

Key responsibilities in Aruba switches & mobility controller

• Design, implement, and manage enterprise switching solutions using Aruba CX Series switches (6300, 6400, 8320, 8400 and 2930F, 2610, 2620).
• Configure and troubleshoot Layer 2/3 protocols, VXLAN/EVPN, OSPF, BGP, VSX, MC-LAG, and stacking technologies.
• Implement and manage data center fabric architectures with high availability and scalability.
• Support and optimize campus network operations including access, distribution, and core layers.
• Monitor and analyze network performance using Aruba NetEdit, Aruba Central, and other monitoring tools.
• Collaborate with IT infrastructure, security, and cloud teams to align networking strategies with business needs.
• Maintain accurate and updated network documentation and diagrams.
• Plan and execute firmware upgrades, migrations, and lifecycle management of Aruba CX infrastructure.
• Participate in incident response, root cause analysis, and continuous improvement efforts.
• Design, implement, and support Aruba Mobility Controllers, Access Points (APs), and ClearPass solutions.
• Configure and maintain ArubaOS features such as role-based access control, authentication, and tunneling.
• Monitor wireless performance and troubleshoot issues related to connectivity, roaming, RF interference, and client onboarding.
• Work with security teams to ensure WLAN is secure, including integration with RADIUS, Active Directory, and ClearPass Policy Manager.
• Perform software/firmware upgrades and ensure controller stability and performance.
• Create and maintain documentation for network design, configuration, and procedures.
• Solid understanding of 802.11 protocols, RF planning, and wireless security principles.
• Experience with VLANs, routing protocols, DHCP, DNS, and IP addressing in large enterprise networks.

Required Skills

• ACSA, ACSP, or ACMX – Aruba Certified Switching Expert.
• Aruba certifications such as ACMP (Aruba Certified Mobility Professional) or ACSA/ACSP/ACDX are highly desirable.