Role & responsibilities

Network Operations and Governance

- Own end-to-end network operations, governance, and service delivery.
- Act as the primary escalation point for network-related incidents, outages, and performance issues.
- Ensure network availability, performance, security, compliance, and operational resilience.
- Define and maintain network SOPs, runbooks, standards, configuration baselines, change templates, and governance controls.
- Lead network service reviews, capacity planning, risk reviews, technical assessments, and continuous improvement initiatives.

LAN Infrastructure Management

- Manage enterprise LAN infrastructure based on Cisco Catalyst and Juniper switches.
- Configure and maintain VLANs, STP, EtherChannel, QoS, ACLs, port security, routing protocols, and network segmentation.
- Perform switch provisioning, software upgrades, patching, configuration backup, lifecycle management, and hardware refresh planning.
- Troubleshoot Layer 2 and Layer 3 connectivity, routing, switching, latency, and packet loss issues.

WLAN Administration

- Manage Cisco, Juniper, and Aerohive wireless infrastructure including WLCs and access points.
- Configure SSIDs, authentication policies, guest access, roaming policies, wireless security, and access control integration.
- Perform wireless capacity planning, RF optimization, channel planning, coverage validation, and performance troubleshooting.
- Monitor wireless availability, user experience, AP health, controller health, and service degradation.

DDI Services Administration

- Administer Sauron DDI services covering DNS, DHCP, and IP Address Management.
- Maintain IP inventory, subnet allocation, DNS zones, DHCP scopes, reservations, and service records.
- Support IP planning for current sites, ODC expansion, network segmentation, and project onboarding.
- Ensure DNS and DHCP service availability,



backup, resiliency, and operational documentation.

Network Access Control and Authentication

- Administer Aruba ClearPass policies, enforcement profiles, authentication flows, and endpoint profiling.
- Manage 802.1X authentication, RADIUS/TACACS+ integration, guest access, BYOD onboarding, and device compliance policies.
- Troubleshoot authentication failures, certificate issues, policy mismatches, endpoint posture, and access enforcement issues.

Firewall and Network Security Management

- Manage Cisco and Fortinet firewall infrastructure, security policies, NAT, VPN, IPS, URL filtering, and access controls.
- Review and implement firewall rule changes using approved change management processes.
- Perform firewall audits, rule recertification, compliance reviews, vulnerability remediation, and security incident support.
- Coordinate with security teams for threat response, segmentation, and policy hardening.

WAN Optimization and Acceleration

- Manage Silver Peak WAN Accelerator services for WAN optimization and application performance improvement.
- Monitor bandwidth utilization, WAN latency, throughput, packet loss, and application experience.
- Configure WAN optimization policies and troubleshoot WAN performance degradation.
- Coordinate with telecom providers, ISP teams, and WAN vendors for service restoration and optimization.

Out-of-Band Network Management

- Manage Cyclades and Raritan console servers and out-of-band access infrastructure.




- Provide secure remote administrative access to critical network devices during incidents and maintenance.
- Maintain OOB access standards, emergency access procedures, credentials governance, and DR readiness.

Monitoring, Reporting and Performance Management

- Monitor network health, interface utilization, device availability, traffic patterns, latency, packet loss, and service performance.
- Prepare operational dashboards, capacity reports, availability reports, incident trends, and service review inputs.
- Proactively identify and remediate recurring network issues through problem management and automation opportunities.

Service Management and Change Governance

- Lead network major incidents, bridge calls, escalations, service restoration, and stakeholder communication.
- Perform root cause analysis, permanent corrective actions, known error documentation, and service improvement planning.
- Review, approve, and implement network changes with implementation plans, validation steps, rollback plans, and CAB participation.

Vendor and Stakeholder Management

- Coordinate with Cisco, Juniper, Fortinet, Aruba, Silver Peak, Aerohive, WAN providers, and enterprise support teams.
- Manage vendor escalations, support cases, operational follow-ups, and issue resolution.
- Work with infrastructure, EUC, security, cloud, application, facilities, and customer teams for seamless service delivery.

Preferred candidate profile

Cisco Catalyst Switching, Juniper Switching, VLAN, STP, EtherChannel, QoS, ACL, HSRP/VRRP, OSPF, BGP, Cisco Wireless, Juniper Wireless, Aerohive, WLC, Sauron DDI, DNS, DHCP, IPAM, Aruba ClearPass, 802.1X, RADIUS, TACACS+, Cisco Firewall, Fortinet Firewall, VPN, NAT, IDS/IPS, Silver Peak WAN Accelerator, Cyclades, Raritan

📌 Network Engineer Lead (Virtual Drive 28Aug26) Tcs - Hyderabad
🏢 Tata Consultancy Services
📍 Hyderabad