Network Engineer Technical Support

Divya Sai

+1-737-***-**** ***********@*****.*** LinkedIn

SUMMARY

Network Engineer with extensive experience in enterprise network infrastructures and advanced computer skills tailored to technical support and network administration. Expertise in configuring Cisco, Juniper, and implementing DHCP, DNS, and firewall solutions to enhance performance and security. Proven ability to troubleshoot hardware/software issues, automate workflows, and deliver strong customer support while managing multiple projects simultaneously. SKILLS

• Routing & Switching: Cisco Catalyst & Nexus platforms, Juniper MX (basic exposure), OSPFv2/v3, BGPv4, EIGRP, IS-IS, VLANS, STP, EtherChannel, LACP, Network Administration

• Network Security: Palo Alto (PAN-OS), Fortinet, Cisco ASA/FTD, Cisco ISE, IPsec/SSL VPN, AnyConnect, IDS/IPS, Wireshark, firewall policies, Zero Trust architecture

• Cloud & Virtualization: AWS, Microsoft Azure, Google Cloud (VPC, VPN Gateway, routing), VMware vSphere, NSX, Microsoft Hyper-V

• SD-WAN & Redundancy: Cisco Viptela, HSRP, VRRP, GLBP, dual-WAN failover, high availability deployments

• Network Automation: Python, Ansible, Terraform, Cisco DNA Center

• Monitoring & Infrastructure: SolarWinds, PRTG, NetFlow, SNMP, Splunk, structured cabling (CAT5e/6), fiber optics, Cisco Prime Infrastructure

• Wireless & Mobility: Cisco Wireless Controllers (9800, AireOS), Aruba Mobility Controllers, WLAN design, RF tuning, wireless troubleshooting

• IP Addressing & Core Services: IPv4/IPv6 planning and subnetting, DHCP Snooping, IP Source Guard, DAI, NAT/PAT

• IT Systems & Administration: Linux, Windows Server, macOS, Cisco IOS, Active Directory management

• Professional Skills: Troubleshooting, Customer Relations, Analytical Skills

• Office Productivity: MS Word, MS Excel, MS Outlook PROFESSIONAL EXPERIENCE

BlackRock Sep 2024 - Present

Network/Security Engineer Houston, TX

• Installed and configured Nexus 9K, Catalyst 4500, and 3800 switching platforms in line with deployment plans.

• Deployed and managed Cisco ASA firewalls by setting up ACLs for controlling inbound/outbound traffic and establishing site-to-site and remote VPNs for secure connectivity.

• Configured routing protocols including OSPF and BGP to support stable, redundant inter-office connectivity, ensuring efficient data flow and failover capability in production environments.

• Managed Cisco Wireless Controllers 9800 to configure SSIDs, perform basic RF tuning, and address end-user Wi-Fi issues while maintaining excellent customer relations.

• Performed network troubleshooting using tools such as Ping, Traceroute, and Wireshark, resolving issues related to connectivity, latency, and hardware faults.

• Diagnosed Layer 1-3 issues with Wireshark and Cisco CLI to identify duplex mismatches, routing loops, ARP issues, and DNS failures, reinforcing advanced troubleshooting capabilities. Humana May 2023 - Mar 2024

Network Engineer KY (Remote)

• Administered centralized DNS and DHCP using Infoblox, streamlining IP address management and ensuring efficient network operations across enterprise environments.

• Configured routing protocols (BGP, OSPF, and EIGRP) on Cisco ASR, Nexus, and Catalyst platforms with summarization, authenti- cation, and load balancing to enhance routing efficiency, security, and availability.

• Implemented ACLs, NAT, and PAT on Cisco ASA firewalls and routers to secure network boundaries and manage traffic between internal, DMZ, and external networks.

• Maintained and supported Cisco routers and switches (including Catalyst 9300, 3750, and 2900) for VLAN configurations, trunking, inter-VLAN routing, and HSRP in both active and transitional environments.

• Automated network provisioning and configuration using Cisco DNA Center to streamline device deployments, reduce manual errors, and enforce consistent network policies.

• Created and managed incident and change tickets in ServiceNow, supplementing documentation with MS Word, MS Excel, and MS Outlook to ensure precise communication and record keeping. Accenture Jan 2021 - Jul 2022

NOC Engineer Bengaluru, India

• Deployed structured cabling solutions using CAT5e, CAT6, and fiber optics (single-mode and multi-mode), ensuring efficient patching and reliable connectivity while supporting end-user technical inquiries.

• Addressed TCP/IP problems and connectivity issues in multi-protocol Ethernet environments, providing technical support for net- work-based IT systems including racking, stacking, and cabling.

• Maintained enterprise network infrastructure by installing, configuring, and migrating routers, switches, firewalls, and wireless access points.

• Configured and optimized HSRP and VRRP for gateway redundancy, enhancing network availability and reducing failover time by 40%.

• Performed deep packet inspection with Wireshark to identify security vulnerabilities, detect abnormal traffic patterns, and support incident response efforts.

• Integrated RADIUS with Active Directory and LDAP for centralized user management and authentication, streamlining access control and reinforcing network security.

• Configured SNMP and Syslog on Cisco ASA to monitor firewall performance and log security events, integrating with SIEM solutions for comprehensive security oversight.

• Implemented scalable Layer 2/3 network solutions featuring VLANs, STP, and advanced routing protocols (OSPF, EIGRP, BGP) to meet growing enterprise demands.

• Utilized ServiceNow for managing network incidents, changes, and configurations, ensuring efficient project management and technical support.

EDUCATION

University of Houston Aug 2022 - May 2024

Master of Science, Computer and Systems Engineering

• GPA: 3.6

Sri Venkateswara College of Engineering, Tirupati, AP, India Jun 2017 - May 2021 Bachelor of Technology, Electrical and Electronics Engineering

• GPA: 3.7

CERTIFICATION

• Cisco Certified Network Associate – CCNA

Contact this candidate