Rajkumar Haribaskaran

Experienced Networking Professional with over 15+ years of expertise in Enterprise Network Support, specializing in DDI (DNS, DHCP, IPAM), Network Security, and LAN/WAN infrastructure. Deep technical knowledge of Infoblox/TCPWave/QIP DDI solutions, with hands-on experience deploying, managing, and troubleshooting Cisco, Juniper, and Avaya switches and routers, as well as Checkpoint, Palo Alto, and Fortinet firewalls across complex, large-scale networks. Skilled in network operations, security enforcement, and IT service management. Strong interpersonal and communication skills, with a focus on quality standards and delivering reliable, scalable, and secure network solutions.

• Cisco Certified Specialist – CCS-ENCOR, 350-401, CSCO14487935
• CCIE Lab, In Progress
• Aviatrix ACE Multicloud Network Associate, 2025-25916
• Cisco Certified Network Associate (CCNA)
• Cisco Certified Network Professional (CCNP)
• DDI Professional, #3454
• Palo Alto Networks Certified Network Security Engineer
• Juniper Networks Certified Associate (JNCIA)
• Juniper Networks Certified Internet Specialist (JNCIS)
• Cisco Certified Network Associate – Wireless
• SD-WAN Versa Networks Configuration and Administration

• Enterprise DDI Migration & Grid Upgrade, Standard Chartered Bank, Migrated legacy DNS/DHCP services from Microsoft to Infoblox Grid architecture across 70+ countries. Led end-to-end deployment, HA Grid Master configuration, and Infoblox appliance rollout. Improved DDI reliability, centralized IPAM, and reduced DNS misconfigurations.
• NAC Solution Deployment – Aruba ClearPass Implementation, Standard Chartered Bank, Migrated legacy Cisco ACS to Aruba ClearPass for wired and wireless authentication. Configured 802.1X, RADIUS, and TACACS+; integrated with network switches; provided BAU support. Enhanced network access security and compliance posture.
• DNSSEC and Anycast Implementation & Infoblox Upgrade, DBS Bank, Designed and implemented DNSSEC and Anycast globally for internal and external DNS zones. Built secure DNS architecture; coordinated with global teams for rollout and monitoring. Improved DNS integrity and availability across the enterprise.
• Firewall Cleanup and Rule Optimization, NETS BCS, Reviewed and removed outdated or unused rules across Check Point, Palo Alto, and Fortinet firewalls. Led audit, analysis, and change planning; coordinated with business and security stakeholders. Reduced firewall rule base size, improved performance, and aligned with compliance requirements.
• Switch & Router Infrastructure Upgrade, CSS/NCR/Vodafone, Upgraded Cisco, Juniper, and Avaya switches and routers across global branches and data centers. Planned and executed upgrades using TFTP/FTP/USB; tested post-upgrade functionality. Enhanced performance, mitigated vulnerabilities, and ensured hardware standardization.
• Infoblox DNS Auditing and External Domain Cleanup, DBS Bank, Conducted full audit of internal/external DNS zones; identified stale records and performed cleanup. Coordinated with registrar teams; ensured DNS hygiene and documented changes. Increased DNS accuracy and reduced security risks from orphaned entries.