SUMMARY

• Around 10+ year of experience in Device and Network testing, designing, configuring and troubleshooting multi - protocol IP networks and wireless mobile networks
• Expertise in gathering, planning and execution of test cases in lab environments and real core network environment along with defect tracking using HP QC Performance center and QA Complete test management tools
• Knowledge on 2G/3G/4G LTE network elements and interfaces
• Experience with CDMA, GSM wireless technologies and other 3GPP, 3GPP2 networks
• Knowledge on S1AP, NAS, GTP, GTPP, Radius, Diameter, SIP, VoIP protocols
• Knowledge on different Radio Access Network architectures and their core elements
• Knowledge on Agilent, Ixia, Spirent and other network and traffic simulators
• Knowledge on PCEF, PCRF, DRA, Multi Service Proxy, Traffic optimization techniques
• Knowledge on policy enforcement and charging mechanism in the EPC core network
• Knowledge on Carrier Ethernet, Cell site aggregation, OSS, backhaul upgrades
• Knowledge on 802.11a,b,g,n standalone and controller based architectures
• Knowledge on testing SIP communication and call establishment during VoLTE setup
• Knowledge on Eagle XG DSR platform and its role in load balancing the diameter traffic
• Experience testing the core packet switched telecom network using test tools to simulate traffic using various network testing tools
• Migrating 3G to HSPA speeds by upgrading mobile backhaul and cell site infrastructure
• Expertise in 3G network architecture including Gn SGSN, S4 SGSN and GGSN
• Expertise in testing multiple IRAT mobility scenarios, test case automation using iTest
• Expertise in packet capture and analyzing the data call flow from UE towards PDN
• Expertise in testing LTE interfaces: S1, S4, S5/S8, S11, Gi, Gn, Gx, Rx, Sy, S6d, Sp
• Expertise in testing E2E call flows, network health checks, reporting and troubleshooting
• Expertise in designing and execution of test cases from test plan and managing test lab
• Expertise in Node, Functional, IOT, Performance and Capacity testing on Packet Core
• Expertise in Mobile backhaul upgrade, Mobile core and packet core testing and upgrade
• Experience in managing and migration of large scale enterprise networks, extensive knowledge in developing test plans, procedures and testing various LAN/WAN products
• Experience in packet analyzing tools like Ethereal, Wireshark, Tektronix probes, JDSU SART and Netscout protocol analyzers
• Experience in supporting enterprise level LAN, WLAN, VPN, firewall infrastructure
• Manual Testing experience in Mobile handset for GSM/GPRS/3G/LTE Applications
• Expertise in manual testing & Mobile Application Testing
• Experience in testing the application on different Mobile Handset
• Effective team player with good interpersonal and communication skills

TECHNICAL SKILLS

IP and Wireless Protocols: TCP, UDP, GTP, LACP, SIP, VoIP, RTP

Network Management: Cisco works 2000, Solar winds, Alcatel SAM 5260, Cisco Prime

EPC architecture: Alcatel MME, SGW, PGW, Confidential EnodeB, Nokia BTS,Cisco 7609, Cisco ASR, Juniper MX series, Juniper SRX, Multi-vendor PCRF

RAT Technologies: LTE, GSM, CDMA, UMTS, UTRAN, EUTRAN

Load Balancer: Big IP F5, Cisco ACE 4700 series

Authentication: Radius, SSL, IPSec, TACACS+, Digital certificates

Operating System: Windows server 2003/2007, Cisco IOS, Star OS, Jun OS

Tools: Spirent Landslide, Ixia Load, Breaking Point Systems, Spirent iTest

PROFESSIONAL EXPERIENCE

Confidential | TX

Network Architect

Responsibilities:

• Involved in the Hardware installation of the RMS server and the Enclosure with 16 half height Blades series G-6 G-7 G-8.
• Health checks of the server’s pre and post installation for DRA.
• Worked for installation of Cisco 6500, 4500, 3560 and Nexus 7k series switches
• Worked on configuring BGP, OSPF and MPLS
• Creating the MOP’s for the Replacement like Hard drive, Blade, and testing it in the lab and approval.
• Creating the MOP’s for ip address change from IP v4 to IP v6 testing in the lab and approval.
• Creating the ATP’s for OFCS and Roaming specific from an existing ATP documents.
• Installation of the DRA (DSR)- Fresh installation and running the pre and post installation MOP’s
• Installation the Feature like CTF, CCF for OFCS and Mediation for Roaming.
• Creating the specific ATP’s for CORE DRA, OFCS DRA and R-DRA and test them in the lab and deploying into the production environment.
• Generating the Traffic to test through the Seagull and test the ATP’s.
• Creating the IP Flow’s throughout the enclosure internal / external network.
• RMA the Equipment’s.
• Installation through Maintenance window

Confidential, MA

Sr. Network Engineer

Responsibilities:

• Involved in Mobile backhaul network and mobile core network upgrade and testing
• Upgrade the cell site aggregators and IP transport network with Alcatel SAR routers
• Perform capacity and latency tests on the upgraded IP packet network
• Knowledge on Integration of IMS to packet core network to allow Voice over LTE
• Expertise on testing communication between PCEF to P-CSCF via Gx and Rx interfaces
• Understanding SIP signaling and other diameter messages to and from PS and IMS
• Knowledge on load balancing diameter messages from PCEF-PCRF-AF
• Testing multi call scenarios, call hold, call trace, call log, conference, M2L and M2M calls
• Expertise in understanding the call flow and architecture of the new core network
• Expertise working in closed RF environments using radio equipment
• Expertise in understanding the provisioning and configuration of APN on core network
• Testing multi vendor user equipment with multiple vendor network configurations
• Report and perform health checks on the newly integrated core network
• Working experience on LTE application and messaging protocols on various interfaces
• Hands-on experience using Tektronix probes and JDSU Signaling analyzers
• Worked for installation of Cisco 6500, 4500, 3560 and Nexus 7k series switches
• Worked on configuring BGP, OSPF and MPLS
• Deploy and configure service routers (Alcatel-Lucent 7750’s and 7705’s; Cisco 7609’s) for migration of Layer 2 and 3 services of Node B’s from Cisco to Alcatel devices
• Test the upgraded mobile backhaul with new core network with ALU and Cisco GW
• Execute and report the testing status to higher management for coordinating with other teams to know the status of installation and integration of elements in the lab
• Designing Access list and troubleshooting IP addressing issues for lab remote access
• Experience using multi vendor mobile equipment with multi vendor OS platforms
• Basic knowledge on understanding a voice call flowing over the LTE packet network
• Using test tools for IP data throughput measurement, latency tests and link capability
• Manage and monitor health checks of all the EPC elements using ALU SAM 5260
• Upgrade the S/W on the cell site routers and network aggregation routers
• Upgrading the IOS on Cisco and Alcatel SAR routers and perform regression testing
• Capturing the packets for traffic analysis using Tektronix Multi user server probes
• Analyzing the packets using Wireshark before reporting the issues to concerned team
• Hand-on experience working with Multi vendor lab setups for 3G, HSPA and 4G LTE
• Maintain logs of network and bandwidth utilization of servers and network devices and create utilization report based on the logs
• Testing the network compromising multi vendor base stations, Mobile multimedia entities, HSS, 3G RNCs other cell site routers at EnodeBs in the environment

Confidential

Sr. Network Engineer

Responsibilities:

• Test case creation based on product notes description
• Execution of the test case as well as free testing and reporting of the bugs
• Create defect report and circulate among the distribution list
• Chase up for the defect to be fixed with integration teams
• Go live testing, post go live testing
• Reviewing and updating Test Cases as per requirement for different releases
• Involved in project from the kick off phase
• Prepare Defect reports and to circulate to the distribution list.
• Prepare test scripts, test plan, for the second release
• Test estimation, defect report generation
• Involved in in-depth analysis on requirements and identifying business gaps.
• Involved in validating the functionalities in the different mail folders
• Involved in Functional Study of application
• Involved in preparation of Test Cases from Use Cases
• Coordinating with the development team to fix the issues which was reported in the Integration testing
• Worked for installation of Cisco 6500, 4500, 3560 and Nexus 7k series switches
• Worked on configuring BGP, OSPF and MPLS
• Involved in ensuring the Workflow and Counterparty Workflow functionalities are implemented as per the requirements
• Played an active participant role in testing of the sync related applications to identify more defects
• Testing multi vendor user equipment, data cards, tablets and palm tops

Confidential, AZ

Sr. Network Engineer

Responsibilities:

• Reviewing and updating Test Cases as per requirement for different releases
• Involved in end-to-end testing of the Mobile Applications
• Attending the client calls to gather project testing requirements
• Involved in Gap Analysis Testing, Sanity/Smoke testing, Integration, Regression testing
• Testing of the chat conversations, Send Receive Picture messages, MMS, sending SMS from the chat, calling from the conversation
• Involved in the user acceptance testing to make sure that the application should work according to the client requirements
• Played an active participant role in testing of the sync related applications to identify more defects. Also Involved in in-depth analysis on requirements and identifying gaps
• Coordinating with the development team to fix the issues which was reported in the Integration testing
• Involved in preparation of test cases from use cases, test case reviews and updates
• Involved in Smoke Testing, Functional Testing, System Testing, Integration Testing, Regression Testing
• Responsible for providing L2/L3 support for Confidential development GSM labs
• Hands-on experience in testing the new features on the mobile core network
• Co-ordinate with the development team in gathering the requirements for network build
• Handled the tasks of assisting development team in conducting test plans
• Involved in identifying and troubleshooting various networking issues
• Coordinated with the vendors for warranty repairs on any of the network equipment
• Hands-on experience in testing call flows between mobile access network towards core network and upgrading the network elements on both mobile core and backhaul
• Configuring layer 2 protocols such as STP/RSTP and layer 3 routing protocols like OSPF, RIP on NEXUS 5000 series switches for Network Ingress and Egress traffic
• Implemented Security control using AAA, radius server, access-list, prefix-list, dynamic list, and DHCP server in support for the mobile testing development lab
• Configuring Cisco ASA firewall for network security and configuring NAT
• Configured SNMP on end point devices such as routers, switches, firewall, load balancers

Confidential, AZ

Network Analyst

Responsibilities:

• Installed and configured DHCP Client/Server
• Handling PC troubleshooting calls
• Troubleshooting Layer 1 and Layer 2 issues over LAN
• Implement and manage campus LAN and WAN
• Basic Configuration of Cisco routers 2600 series, 3600 series
• Support the development team with simulation lab installation
• Experience in Troubleshooting and Supporting PC Hardware & Software
• Troubleshoot TCP/IP problems; troubleshoot connectivity issues in Ethernet networks
• Configured and implemented VLANs on local network
• Performed password recovery procedures on routers and switches
• Planning, Designing and implementing connectivity between the simulation labs
• Prepared technical documentation (Equipment Selection, design, configurations and production check-outs) using Microsoft VISIO/Microsoft Office
• Involved in configuration and troubleshooting of RIP, EIGRP, OSPF routing protocols
• Updated IOS versions on catalyst switches and routers by creating a backup on TFTP server and loading back new versions from TFTP server
• Worked on Layer 2 protocols such as STP, VTP, and other VLAN troubleshooting issues and configuring switches from scratch and deployment
• Handling LAN/WAN at various field sites, providing technical support for networking and hardware issue related to the corporate LAN and core development simulation labs
• Maintaining and documenting the Configurations using Microsoft Word and Microsoft Visio

Confidential

Network Analyst

Responsibilities:

• Performed network documentation and created disaster recovery plan.
• Setup Cisco Entercept IDS and Cisco Works for Windows for network monitoring.
• Oversaw migration of WAN links to new service provider, designed full mesh WAN, set up TFTP server to backup, and restored configuration and IOS image files for the PIX, Cisco routers, and Catalyst switches.
• Analyzed expanding network, ran fiber, and implemented wireless communication.
• Designed configuration and layout of WAN to include IPT Internet facing VPNs and wireless subnet.
• Migrated network from full mesh frame relay to Point-Point T1 on larger sites, and implemented IPsec VPN on smaller sites.
• Administered multiple PIX firewalls throughout WAN to ensure LAN integrity from external threats.
• Monitored bandwidth and network activity by analyzing information provided by MRTG to ensure both efficient and effective network operation.
• Configured and supported multiple remote site installations.