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Engineer Network

San Jose, CA
October 30, 2019

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Gaurav Chandra Debnath

San Jose, CA 510-***-****

Network Engineer


5+ years of experience as a Network Security Engineer in Administration of LAN, WAN, Wireless and SecurityTechnologies and Products including instalments and configurations of physical networks servers, switches, routers, panels and ports hubs.

Under general direction, responsible for the acquisition, installation, maintenance and usage of the wide and local area network, Manages network performance and maintains network security, Ensures that security procedures are implemented and enforced, installs all network software, evaluates, develops and maintains telecommunications systems, troubleshoots network problems, establishes and implements network policies, procedures and standards and ensures their conformance with information systems and company's objectives, trains users on network operation.

Excellent Knowledge of network management tools and protocols. Experience with application protocols.

Good Knowledge of IP networking and network security as well as good knowledge in Peripheral Component Interconnect PCI.

Implement, Configure, Maintain, Fine Tune Troubleshoot Data Leak Prevention DLP and NAC Solution.

Familiar with Remedy, Secure Cisco PIX Firewalls and ASAs, Juniper SRX, Firewall Switch Modules, BluecoatProxy devices, Active Directory, VMWare and Network Common Operational Picture (NetCOP). Familiar with Wireless technologies 3G, 4G/LTE and Datacentre technologies.

Wrote python scripts to manage AWS resources from API calls using BOTO SDK and also worked with AWS CLI.

In depth Knowledge of AWS cloud service like Compute, Network, Storage and Identity & access management.

Strong working experience with Static, RIP, EIGRP, OSPF BGP Routing protocols.

Working experience with Layer-2 Layer-3 Protocols: VLANs, EtherChannel Trunking, all STP, VTP, HSRP, VRRP, GLBP, CoS.

Good understanding of OSI Layers and TCP/IP models, IP Addressing and Sub netting.

Configure and Troubleshoot IPsec S2S, Remote Access and SSL VPN on ASA firewall and Checkpoint Firewalls.

Configuring Checkpoint Firewall in IPSO, Secure Platform and GAIA platforms.

Analysing the IPS logs and adjusting the protect mode.



MS in Computer Engineering– San Jose State University

Specialization: Computer Network System

Professional Experience

UnitedHealth Group, CA Jan 2019– Current

Role: Network Engineer


Configured OSPF, EIGRP, BGP on Cisco 2901/4431/4451 perimeter and internal routers.

Configuration and troubleshooting of Cisco 2500, 2600, 3000, 6500, 7500, 7200 Series routers.

Experience working Juniper T-Series, M-Series, MX-Series, J-Series Routers

Proficient in Cisco IOS for configuration troubleshooting of routing protocols: M.P-BGP, OSPF, LDP, EIGRP, RIP, BGP v4, MPLS.

Worked on Cisco Routers, Active /Passive Hubs, Switches, Cisco PIX Firewall, Nortel VPN Concentrators TCP/IP, NAT and Checkpoint ESX/GSX firewall.

Provided firewall policy configuration and services with Juniper SRX 240 650 series.

Optimized performance of the WAN network consisting of Cisco 3550/4500/6500 switches by configuring VLANs.

Configured Zscaler cloud based proxy solution for content filtering, DLP tools

Built a VPC, established the site-to- site VPN connection between Data Center and AWS .

Create and test Cisco router and switching operations using OSPF routing protocol, ASA Firewalls, and MPLS switching for stable VPNs.

Enabled continuous Layer 2 monitoring with Solar Winds, so that each site can run independently until connectivity is restored.

Configured, installed, & managed DHCP, DNS, &WINS servers.

Involved in design and implementation of Data Center Migration, worked on implementation strategies for the expansion of the MPLS VPN networks.

Installed and configured the Cisco routers 2800 in two different customer locations. It includes coordinating with Verizon and AT & T in order to bring the serial interface up for T3 link. Also, configuration includes frame relay, BGP and VPN tunnel on GRE.

Manage Cisco Routers and troubleshoot layer1, layer2 and layer3 technologies for customer escalations.

Taking Regular backups & testing the backups by restoring in test lab frequently.

Power Control Technology, India Mar 2014 – Sept 2016

Role: Support Engineer


Performed Network establishment and isolation using VLAN, Trunk, to enhance network security and reduce the hardware count.

Configured & performed Troubleshooting for Cisco routers & switches and reduced the downtime.

Securing company network by implementing security protocols on the gateway router & providing flawless communication both for intra-unit & inter-unit communication.

Planning and Implementation of Subnetting, VLSM to conserve IP addresses.

Configured and troubleshot VOIP based phone system.

Analyzed and understood the issues related to DNS, DHCP and other IP conflicts.

Upgraded Cisco IOS, troubleshot complex LAN/WAN infrastructure, monitored traffic using Wireshark.

Troubleshot complex network frame relay, ATM, PPP, ISDN, MPLS, BGP, EIGRP, OSPF & RIP issues.

Akansha Sales and Promoters, India Jan 2013 – Feb 2014

Role: Assistant Supervisor


Lead the successful operation and Monitoring of control unit.

Established secure connection for data aggregation from the server.

Customer handling for performance and network improvement meetings.

Conducting Network audits including operator’s parameter & field benchmarking.

Responsible for improving & achieving contractual LTE FDD Network KPI’s such as Accessibility, Retainability, Mobility, service integrity, utilization & Availability.

Bharat Heavy Electricals Limited, India Nov 2011 – Nov 2012


Established communication between different production units.

Monitored switches and routers in a communication environment that consisted of network equipments.

Provided hassle free communication via validating configuration settings for layer 1 and layer 2.


Cisco Certified Network Associate (Routing and Switching).

LAN, WAN, Cisco PIX Firewalls, Firewall Switch Modules, Bluecoat Proxy devices, Active Directory, VMWare, Python, AWS, VLANs, Zscaler, STP, VTP, HSRP, VRRP, GLBP, CoS, TCP/IP, IPSO, IPS logs, Cisco router (7200,3800, 3600, 2800, 2600, 2500, 1800),Cisco catalyst (6500, 4500, 3750, 3500, 2900), Microsoft Office,Windows, Linux

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