Sr Network Engineer

Tata Consultancy Services; San Jose (CA); On-site; USD 90,000 - 130,000; Full time

Job summary

Tata Consultancy Services Limited in San Jose, CA is seeking a senior Network Engineer to support large-scale data center and WAN environments. The role requires hands-on expertise with Juniper switching, Aruba ClearPass, Fortinet SD-WAN, and related technologies, plus L3 problem resolution and vendor coordination.

You will work on configuring VLANs, STP, LACP, VPNs, and monitoring network health, with a focus on uptime and performance in a global enterprise setting.

Qualifications

• 8-12 years of Enterprise/Telecom network infrastructure experience.

Responsibilities

• Provide L3 network support for large data center and WAN environments.
• Lead incident resolution for P1/P2 issues and drive problem management.
• Coordinate with external vendors for network projects and escalations.
• Configure, troubleshoot, and maintain Juniper, Aruba, Fortinet and related devices.
• Perform network changes, upgrades, and firmware updates with minimal downtime.
• Manage HA clusters, VPNs, and IPSec/SSL networks.
• Document configurations and outages for post-incident reviews.

Skills

L3 support

Juniper switching

VLANs

STP/RSTP/MSTP

LACP

Virtual Chassis

Routing protocols

VPNs

WiFi/WLAN

RNP/Network health

Vendor coordination

Education

Bachelor's degree in technology

Tools

Juniper Switching

Aruba Wireless

FortiGate SD-WAN

Infoblox

ClearPass

RADIUS

Active Directory

Job description

• Knowledge on network troubleshooting for Large Data Centers, Large WAN/Network environment.
• Juniper Switching (Must Have)
• Provide L3 support for Juniper EX Series Switches. Configure and troubleshoot:
• VLANs, STP/RSTP/MSTP ,LACP , Virtual Chassis
• Routing Protocols , Perform switch upgrades, patching, and hardware replacements.
• Troubleshoot Layer 2 and Layer 3 network issues
• Aruba Wireless with experience on Clear Pass (Must Have)
• Provide advanced support for Aruba Mobility Controllers and Wireless Networks.
• Troubleshoot wireless connectivity, roaming, authentication, and performance issues.
• Perform wireless health checks and optimization activities.
• Configure and support:
• SSIDs ;AP Groups ;RF Optimization ;Client Load Balancing ;Mobility & Roaming
• Manage integrations with ClearPass, RADIUS, and Active Directory.
• FortiGate SD-WAN (good to have upto L2)
• Provide L3 support for Fortinet Secure SD-WAN infrastructure.
• Design, configure, and troubleshoot SD-WAN policies, SLAs, and application steering.
• Manage IPSec VPN, SSL VPN, Dynamic Routing, and WAN optimization.
• Troubleshoot routing, security, and performance-related issues.
• Support HA clusters, firmware upgrades, and migration activities.
• Analyse logs using FortiAnalyzer and manage configurations using FortiManager.
• Experience: 8-12 Years (L3)
• Hand-On experience working with a large Infoblox and Aruba ClearPass deployment.
• Expert level knowledge with various protocols such as VRRP, HSRP, STP, LACP, SNMP.
• Recognize the importance of customer focus and/or of serving the needs of the end user.
• Productivity Tools: Word, Excel, PowerPoint & Visio.
• 24x7 Remote Network Monitoring & Management.
• Own the networking issues connecting and supporting the corporate and shared network environment.
• Drive critical issue resolution/Break-Fix for P1/P2 issues.
• Coordinate and work with the external vendors for various operational issues and projects.
• Provide hardware support & maintenance for all networking components.
• Manage existing and new networking sol utions, including monitoring the network stability and uptime.
• Handle various projects related to site expansion, Hardware Refresh, Technology refresh as required.
• Handle escalated issues from L1/L2 team and provide timely resolution.
• Responding and documenting outages and circuits down through incident reporting.
• Identify corrective actions for critical incidents and drive them to closure to ensure stability through Problem management process.
• Interact with various internal users in evaluating the needs and building a right solution to meet the requirements.
• Documentation and change control.
• Mentor junior team members and provide guidance in various change tasks.
• Monitor event logs and services to be proactive in identifying potential issues.
• Attend scheduled network change calls impacting the network availability.
• Shift Handover and Shift Updates.
• CCNP, Juniper Switching , Palo Also Certification would be an added advantage.

Generic Managerial Skills:

• Bachelor's degree in technology or any other bachelor's degree
• ~10 years of Enterprise / Telecom Network infrastructure relevant experience.
• Detailed, oriented with excellent communication skills (written & oral) particularly the ability to communicate with staff who aren't technically trained.
• Presentation skills, quick learner, self-initiated, team player, open to work in shifts to support and monitor the Global Network Infrastructure.
• Excellent interpersonal skills needed to work with various levels of technical staff members.
• Strong analytical and problem-solving skills with demonstrated ability to execute against deadlines.
• Work with internal customers in managing requests/changes/incidents for your areas of work.
• Work with global teams to provide support and complete IT projects.
• Manage and prioritize multiple tasks. Ability to manage timelines and meet tight deadlines.
• Self-motivated, constructive and positive attitude.
• Possess good understanding of infrastructure management processes; knowledge on ITIL framework.

Salary Range: $90,000 - $130,000 a year

Location

San Jose, CA

Function

TECHNOLOGY

Role

ID

432377

Skills

Cisco Network | LAN/WAN Network Engineer