Sudhakar Tiwari

Experience

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  Sify Technologies Limited.

  Oct 2013 - Feb 2015

  Network Support Engineer

  Job Responsibilities:• Trouble-shoot the network connectivity issues of the customer Punjab & Sind Bank.• Working on Wireless, Leased Line and ISDN links.• Installation and configuration of Cisco Routers and Switches.• Working on last mile.• Isolate the problems quickly whether the problem in network or customer end.• Providing the remote support to the customer by accessing the end device remotely.• Resolving the reported issues within the defined SLA.• Coordinating with the customer, FE and senior network teams for the faster and permanent resolution.• Appropriately escalate the issues to the next level.• Investigating the reported issues and providing the RCA(Root Cause Analysis) for the issues occurred.• Taking periodic backup of routers and switches.• Monitoring the critical links and raise the trouble tickets for the subjected links proactively. Show less

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  BT Group

  Feb 2015 - Dec 2016

  Network Engineer

  Job Responsibilities:• Trouble-shooting the end to end network connectivity issues of the customer Royal Bank of Scotland.• Accessing the network devices remotely for trouble-shooting the issues.• Trouble-shooting the WAN and LAN connectivity issues and isolate the faults quickly.• Reporting faults with service providers/vendors (Verizon, AT&T, IBM etc.) and chase them until the resolution of the fault. • Providing prompt periodic updates to the various stakeholders until detection of the root cause and closure of any particular incident.• Assisting local IT teams and field engineers to troubleshoot and isolate the problems.• To establish technical & business bridges/conference calls as required and involve all relevant teams/vendors and to take ownership of the incident until resolution.• Troubleshooting issues like link down, flapping, packet loss etc. • Using Ionix (Network Configuration Manager) tool for fetching the configuration of devices.• Doing pre-checks and post-checks of devices for the maintenance activities.• Raising the network change references in Service Now tools and executing the changes successfully.• Using Watch4Net tool to check the bandwidth utilizations of links.• Fetching device details (Serial number, device type, location, polling status for event monitoring etc.) from the NMS Loader tool. • Performing routine health check of critical network elements and sending reports on daily basis.• Installation and configuration of Cisco routers and switches.• To ensure technical and managerial escalation completed up to higher levels within defined time-scales.• Performing timely and accurate diagnostics, ensuring fault clearance wherever possible.• Coordinating with the problem management team for recurring issues to get the permanent resolution.• Proactively monitor critical links/devices in SMARTS monitoring tool to identify fault occurrence Show less

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  Orange Business

  Dec 2016 - May 2018

  Senior Network Engineer

  Job Responsibilities:• Part of the network team managing the network connectivity of all the sites of customer GlaxoSmithKline • Managing the LAN/WAN connectivity of the sites (approx 500 sites) located across the world.• Working on reactive incidents till resolution of the problem.• Installing and configuring the Cisco routers and switches for customer sites.• Installing the Cisco APs in LAN environment at customer sites and chec¬king the AP status in Cisco Wireless LAN Controllers (WLC).• Working on WAN optimization devices (Riverbed SteelHead) and trouble-shooting the faults and engaging the Riverbed TAC if required for faster resolution.• Installing the Riverbed SteelHead devices engaging the Riverbed expert team.• Implementing the change requests in accordance with change management team.• Working on the PE routers to trouble-shoot the WAN network issues.• Coordinating with multiple vendors/ISPs (Cisco, Riverbed, AT&T, CenturyLink, BT etc.) to isolate & resolve faults quickly.• Doing the planned activities in accordance with change management team.• Doing the pre-checks and post-checks for every change management activity and taking the appropriate approvals before implementing the changes.• Joining the live meeting/Cisco Webex sessions and coordinate with all stake holders during the change activities/major incidents for faster resolution.• Working on Spectrum tool for checking the live status of networking devices installed at customer end,.• Working on Gini tool for taking the back-up of configuration in case device is dead/down.• Working on Oceane tool for recording the updates for an ongoing incident. Show less

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  Fiserv

  May 2018 - Aug 2019

  Network Support Professional
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  BT Group

  Aug 2019 - now

  Network Consultant