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Network Engineer L3
Network Engineer L3Confidential • Kolkata, India
Network Engineer L3

Network Engineer L3

Confidential • Kolkata, India
13 days ago
Job description

Company Description

TechDravin is a leading provider of innovative IT solutions, specializing in IT Consultancy, Field Service Operations (FSO), IT Staffing, and Procurement Services. Our mission is to empower businesses with tailored strategies and cutting-edge technology to excel in today's rapidly evolving digital landscape. With a team of over 30 certified professionals, we deliver expertise in IT strategy, efficiency optimization, and cost-effective solutions. Known for our client-focused approach, we offer flexible engagement models that ensure seamless integration and measurable impact. At TechDravin, we are committed to helping businesses achieve operational excellence through smart digital innovation.

Assessment Phase :

  • Physical site survey of each factory location
  • Inventory of network devices (switches, access points, wireless devices, ISP links)
  • Identification of services / applications using ISP links (users, cameras, IoT, production systems) via discussions with the stakeholders
  • Determine bandwidth utilization of ISP links
  • Review of switch / router / firewall configurations to establish routing and traffic flows
  • Evaluation of centralized hub / firewall capacity to handle aggregated traffic
  • Consultation with Factory IT staff, End-users, Third-party providers (ISPs, equipment vendors) to determine the setup which is dependent on the ISP links
  • Review of existing physical and the logical design documents to plan for the migration

Design Phase :

  • Migration approach and runbook creation per site
  • Identify traffic flows to be redirected through firewall
  • Recommend additional bandwidth / firewall resources if required
  • Document revised network topology for each location for the WAN connectivity
  • Document dependencies, risks and timelines
  • Pilot Phase :

  • Select 1–2 representative factory sites for pilot migration
  • Conduct full assessment, migration, and validation as per methodology
  • Identify gaps, risks, or unforeseen challenges during pilot
  • Refine runbooks, checklists, and timelines based on pilot results
  • Obtain stakeholder approval before full-scale rollout
  • Migration Phase :

  • Cutover for LAN and WLAN setup from local ISP link to a connection behind a firewall
  • Post-migration validation (connectivity, application availability, service checks)
  • Configuration of firewalls for revised connectivity
  • Configuration at the hub end if needed
  • User acceptance and handover
  • Skills Required

    Switches, Access Points, Network Devices

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    Network Engineer • Kolkata, India

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